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Aguihe PC, Castelani AB, Ospina-Rojas CI, Iyayi EA, Pozza PC, Murakami AE. Interaction effects of glycine equivalent and standardized ileal digestible threonine in low protein diets for broiler grower chickens. Anim Biosci 2024; 37:1053-1064. [PMID: 38419547 PMCID: PMC11065947 DOI: 10.5713/ab.23.0307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 10/26/2023] [Accepted: 12/10/2023] [Indexed: 03/02/2024] Open
Abstract
OBJECTIVE This study aims to investigate the interactive effect of a glycine equivalent (Glyequi) and standardized ileal digestible threonine (SID Thr) levels in low crude protein diets on performance, blood biochemistry, pectoral muscular creatine content and oxidative stability of meat in broiler chickens from 21 to 42 days. METHODS A total of 1,500, twenty-one-day-old Cobb-Vantress male broiler chickens were distributed in a completely randomized 5×3 factorial arrangement of Glyequi×SID Thr with five replicates of 20 birds each. Fifteen dietary treatments of 16.5% CP were formulated to contain five levels of total Glyequi (1.16%, 1.26%, 1.36%, 1.46%, and 1.56%) and three levels of SID Thr (0.58%; 0.68% and 0.78%). RESULTS Interaction effects (p<0.05) of Glyequi and SID Thr levels were observed for weight gain, carcass yield, pectoral muscular creatine content and serum uric acid. Higher levels of Glyequi increased (p = 0.040) weight gain in 0.58% and 0.68% SID Thr diets compare to the 0.78% SID Thr diet. The SID Thr level at 0.68% improved (p = 0.040) feed conversion compared to other SID Thr diets. Levels of Glyequi equal to or above 1.26% in diets with 0.78% SID Thr resulted in birds with higher (p = 0.033) pectoral muscular creatine content. The breast meat yield observed in the 0.68% SID Thr diet was higher (p = 0.05) compared to the 0.58% SID Thr diet. There was a quadratic effect of Glyequi levels for pectoral pectoral muscular creatine content (p = 0.008), breast meat yield (p = 0.030), and serum total protein concentrations (p = 0.040), and the optimal levels were estimated to be 1.47%, 1.35%, and 1.40% Glyequi, respectively. The lowest (p = 0.050) concentration of malondialdehyde in the breast meat was found in 0.68% SID Thr diets at 1.36% Glyequi. CONCLUSION The minimum dietary level of Glyequi needed to improve performance in low crude protein diets is 1.26% with adequate SID Thr levels for broiler chickens.
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Affiliation(s)
- Paschal Chukwudi Aguihe
- Department of Animal Production and Heath Technology, Federal College of Wildlife Management, P.M.B 268, New Bussa 912106,
Nigeria
| | | | | | | | - Paulo Cesar Pozza
- Departamento de Zootecnia, Universidade Estadual de Maringá, Maringá, Paraná, 87020-900,
Brazil
| | - Alice Eiko Murakami
- Departamento de Zootecnia, Universidade Estadual de Maringá, Maringá, Paraná, 87020-900,
Brazil
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2
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Cowieson AJ, Phillips CA, Mullenix GJ, Greene ES, Papadopoulou E, Dridi S. Dynamic responses of blood metabolites to nutrient depletion and repletion in broiler chicken nutrition. Poult Sci 2024; 103:103859. [PMID: 38823292 PMCID: PMC11176804 DOI: 10.1016/j.psj.2024.103859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 05/09/2024] [Accepted: 05/11/2024] [Indexed: 06/03/2024] Open
Abstract
A total of 720 male Cobb 500 broiler chicks were used in a 5 treatment and 8 replicate experiment to explore dynamic changes in blood metabolites in response to short-term nutrient depletion and repletion. Day old chicks were offered a corn and soybean meal-based common starter diet from d1 to 14 that was formulated to meet all nutrient requirements of the birds. From d15 to 17, the experimental diets were offered, before returning all groups to a common diet from d18 to 20, at which point the experiment was terminated. A total of 5 experimental diets were designed. A standard grower diet served as a control and was offered to 1 of the 5 groups of chicks. The additional 4 experimental groups comprised diets that were low in digestible phosphorus (P), total calcium (Ca), crude protein and digestible amino acids (AA) or apparent metabolizable energy (AME). The common grower diet that was offered from d18-20 was designed to be nutritionally complete and was intended to explore dynamic response to nutrient repletion. Blood was drawn from 8 chicks per treatment at time 0 (immediately prior to introduction of the experimental diets) and then again 3, 6, 12, 24, and 48h after introduction of the nutrient depleted diets. Additionally, blood was drawn 3, 6, 12, 24, and 48h after the introduction of the nutritionally complete common grower diet. Chicks were not sampled more than once. Feed intake, body weight and feed conversion ratio (FCR) were assessed on d14, 17, and 20. Blood metabolites were analyzed using the iSTAT Alinity V handheld blood analyzer, the Vetscan VS2 Chemistry Analyzer and the iCheck Carotene Photometer. Live performance metrics were not affected by the short-term nutrient depletion and all chicks grew normally throughout the experiment. The diet with low digestible P generated a rapid temporary decrease in plasma P and an increase in plasma Ca, that were returned to baseline following the re-introduction of the common grower feed. Introduction of the diet with low total Ca resulted in a significant increase in plasma P, effects which were also mitigated during the nutrient repletion phase. Total plasma protein, albumin and uric acid (UA) were decreased, and plasma glucose increased, in the chicks that received the diet with low crude protein and digestible AA. There was a delayed increase in aspartate amino transaminase (AST) associated with the diets with low digestible P and low AME. These results demonstrate the capacity of blood biochemistry to adapt to quantitative and qualitative changes in nutrient intake. Point-of-care analysis of blood biomarkers offers nutritionists a valuable opportunity to calibrate nutritional matrices for common dietary ingredients, zootechnical feed additives and to optimize diet phase changes. It can be concluded that many blood biomarkers are plastic to changes in diet nutrient density and offer an objective index for optimization of nutritional programs for commercial broiler production.
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Affiliation(s)
- A J Cowieson
- DSM-Firmenich, Animal Nutrition and Health, Kaiseraugst 4303, Switzerland.
| | - C A Phillips
- DSM-Firmenich, Biotechnology, Lexington, MA, USA
| | - G J Mullenix
- Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR, USA
| | - E S Greene
- Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR, USA
| | - E Papadopoulou
- DSM-Firmenich, Animal Nutrition and Health, R&D Center Tulln, Tulln, Austria
| | - S Dridi
- Center of Excellence for Poultry Science, University of Arkansas, Fayetteville, AR, USA
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3
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El-far AS, Kamiya M, Saneyasu T, Honda K. Effects of Amino Acid Supplementation to a Low-Protein Diet on the Growth Performance and Protein Metabolism-related Factors in Broiler Chicks. J Poult Sci 2024; 61:2024014. [PMID: 38726100 PMCID: PMC11074001 DOI: 10.2141/jpsa.2024014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 04/03/2024] [Indexed: 05/12/2024] Open
Abstract
A low-protein (LP) diet may alleviate the environmental impact of chicken meat production by reducing nitrogen excretion and ammonia emissions. Thus, this study investigated the effect of a 15% reduced protein diet with or without amino acid (AA) supplementation on the growth performance of broiler chicks from 10 to 35 days of age and the underlying mechanism for loss of skeletal muscle mass. Thirty-six male broiler chicks were allocated to three experimental groups based on body weight: control, LP, and essential AA-supplemented LP (LP+AA). The body weight gain, feed conversion ratio, and weight of breast muscles and legs significantly decreased only in the LP group at the end of the feeding period. Plasma uric acid levels were significantly lower in the LP+AA group than those of the other groups. In the LP group, mRNA levels of microtubule-associated protein 1 light chain 3 isoform B were significantly higher in the pectoralis major, whereas those of atrogin-1, muscle RING-finger protein-1, and myoblast determination protein 1 were significantly higher in the biceps femoris compared to those in the control group. There were no significant differences in insulin-like growth factor 1 mRNA levels in the liver or skeletal muscle between groups. These findings suggested that supplementation with essential AAs ameliorated the impaired effects of an LP diet on growth performance in broiler chicks, and that the transcriptional changes in proteolytic genes in skeletal muscles might be related to the impaired effects of the LP diet.
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Affiliation(s)
- Asmaa S. El-far
- Graduate School of
Agricultural Science, Kobe University, Kobe
657-8501, Japan
- Faculty of
Veterinary Medicine, Damanhour University,
Damanhour, Egypt
| | - Maho Kamiya
- Graduate School of
Agricultural Science, Kobe University, Kobe
657-8501, Japan
| | - Takaoki Saneyasu
- Graduate School of
Agricultural Science, Kobe University, Kobe
657-8501, Japan
| | - Kazuhisa Honda
- Graduate School of
Agricultural Science, Kobe University, Kobe
657-8501, Japan
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4
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Aderibigbe AS, Wise TL, Davis JD, Naranjo VD, Hess V, Dozier WA. Effects of reduced crude protein diets while maintaining essential amino acid concentrations on growth performance, nitrogen output, ammonia production, and meat yield. Poult Sci 2024; 103:103572. [PMID: 38428355 PMCID: PMC10912913 DOI: 10.1016/j.psj.2024.103572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 02/09/2024] [Accepted: 02/14/2024] [Indexed: 03/03/2024] Open
Abstract
An experiment was conducted to determine the effect of feeding reduced crude protein (CP) diets to Ross × Ross 708 male broilers while providing adequate essential amino acid (AA) concentrations on growth performance, nitrogen (N) and ammonia output, and carcass characteristics from d 1 to 33 post hatch. Birds received 1 of 6 dietary treatments (10 replicate pens per treatment) varying in CP content. Diet 1 (control) was formulated with DL-Met, L-Lys, and L-Thr (23.2, 20.7, and 19.1% CP) in the starter (1-14 d of age), grower (15-25 d of age), and finisher (26-33 d of age) periods, respectively. Dietary L-Val, Gly (only in starter period), L-Ile, L-Arg, and L-Trp were sequentially supplemented in the order of limitation in Diets 2 through 6. Dietary CP was reduced gradually across the dietary treatments resulting in a CP reduction in Diets 1 to 6 by 3.4, 3.4, and 2.3% points in the starter, grower, and finisher periods, respectively. At d 14, 25, and 33 posthatch, feed conversion decreased (P < 0.05) with L-Val addition (Diet 2) and increased (P < 0.01) with L-Val to L-Trp addition (Diet 6) to the control. Dietary treatments did not alter weights and yields of carcass, breast, drum, or thighs. Dietary CP reduction with added L-Val (Diet 2), L-Val to L-Arg (Diet 5), or L-Val to L-Trp (Diet 6) increased abdominal fat (P < 0.01) compared with control. Nitrogen excretion (g/bird; P = 0.003) and equilibrium ammonia concentration (mg/kg; P = 0.041) at day 33 reduced by 16% and 48% respectively in birds fed reduced-CP diets with L-Val to L-Trp (Diet 6) compared with control-fed birds. This study indicated that sequential addition of supplemental AA in the order of limitation from DL-Met to L-Arg allowed reduction of dietary CP beyond 2%-point without depressing growth performance and meat yield of broilers from day 1 to 33 while reducing nitrogen excretion and ammonia emissions.
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Affiliation(s)
- A S Aderibigbe
- Department of Poultry Science, Auburn University, Auburn, AL 36849, USA
| | - T L Wise
- Department of Poultry Science, Auburn University, Auburn, AL 36849, USA
| | - J D Davis
- Department of Biosystems Engineering, Auburn University, Auburn, AL 36849, USA
| | - V D Naranjo
- Evonik Nutrition & Care GmbH, Animal Nutrition, Hanau, Germany
| | - V Hess
- Evonik Nutrition & Care GmbH, Animal Nutrition, Hanau, Germany
| | - W A Dozier
- Department of Poultry Science, Auburn University, Auburn, AL 36849, USA.
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5
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Hruby Weston A, Teixeira IAMA, Yoder PS, Pilonero T, Hanigan MD. Valine and nonessential amino acids affect bidirectional transport rates of leucine and isoleucine in bovine mammary epithelial cells. J Dairy Sci 2024; 107:2026-2046. [PMID: 37863296 DOI: 10.3168/jds.2023-23447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 09/27/2023] [Indexed: 10/22/2023]
Abstract
A more complete understanding of the mechanisms controlling AA transport in mammary glands of dairy cattle will help identify solutions to increase nitrogen feeding efficiency on farms. It was hypothesized that Ala, Gln, and Gly (NEAAG), which are actively transported into cells and exchanged for all branched-chain AA (BCAA), may stimulate transport of BCAA, and that Val may antagonize transport of the other BCAA due to transporter competition. Thus, we evaluated the effects of varying concentrations of NEAAG and Val on transport and metabolism of the BCAA Ala, Met, Phe, and Thr by bovine mammary epithelial cells. Primary cultures of bovine mammary epithelial cells were assigned to treatments of low (70% of mean in vivo plasma concentrations of lactating dairy cows) and high (200%) concentrations of Val and NEAAG (LVal and LNEAAG, HVal and HNEAAG, respectively) in a 2 × 2 factorial design. Cells were preloaded with treatment media containing [15N]-labeled AA for 24 h. The [15N]-labeled media were replaced with treatment media containing [13C]-labeled AA. Media and cells were harvested from plates at 0, 0.5, 1, 5, 15, 30, 60, and 240 min after application of the [13C]-labeled AA and assessed for [15N]- and [13C]-AA label concentrations. The data were used to derive transport, transamination, irreversible loss, and protein-synthesis fluxes. All Val fluxes, except synthesis of rapidly exchanging tissue protein, increased with the HVal treatment. Interestingly, the rapidly exchanging tissue protein, transamination, and irreversible-loss rate constants decreased with HVal, indicating that the significant flux increases were primarily driven by mass action with the cells resisting the flux increases by downregulating activity. However, the decreases could also reflect saturation of processes that would drive down the mass-action rate constants. This is supported by decreases in the same rate constants for Ile and Leu with HVal. This could be due to either competition for shared transamination and oxidation reactions or a reduction in enzymatic activity. Also, NEAAG did not affect Val fluxes, but influx and efflux rate constants increased for both Val and Leu with HNEAAG, indicating an activating substrate effect. Overall, AA transport rates generally responded concordantly with extracellular concentrations, indicating the transporters are not substrate-saturated within the in vivo range. However, BCAA transamination and oxidation enzymes may be approaching saturation within in vivo ranges. In addition, System L transport activity appeared to be stimulated by as much as 75% with high intracellular concentrations of Ala, Gln, and Gly. High concentrations of Val antagonized transport activity of Ile and Leu by 68% and 15%, respectively, indicating competitive inhibition, but this was only observable at HNEAAG concentrations. The exchange transporters of System L transport 8 of the essential AA that make up approximately 40% of milk protein, so better understanding this transporter is an important step for increased efficiency.
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Affiliation(s)
- A Hruby Weston
- School of Animal Sciences, Virginia Tech, Blacksburg, VA 24060.
| | - I A M A Teixeira
- School of Animal Sciences, Virginia Tech, Blacksburg, VA 24060; Department of Animal, Veterinary, and Food Sciences, University of Idaho, Twin Falls, ID 83303-1827
| | - P S Yoder
- School of Animal Sciences, Virginia Tech, Blacksburg, VA 24060; Perdue AgriBusiness LLC, Salisbury, MD 21804
| | - T Pilonero
- School of Animal Sciences, Virginia Tech, Blacksburg, VA 24060
| | - M D Hanigan
- School of Animal Sciences, Virginia Tech, Blacksburg, VA 24060
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6
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Strifler P, Horváth B, Such N, Dublecz K, Pál L. Effects of different dietary threonine and glycine supplies in broilers fed low-protein diets. Front Vet Sci 2024; 11:1373348. [PMID: 38590541 PMCID: PMC10999546 DOI: 10.3389/fvets.2024.1373348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 02/29/2024] [Indexed: 04/10/2024] Open
Abstract
The reduction of crude protein (CP) content of broiler diets with balanced amino acid supply can increase the nitrogen (N) utilization efficiency and reduce ammonia emission, the risk of many health problems in birds. Feeding low protein (LP) diets without the impairment of performance traits needs the optimized dietary levels of threonine (Thr) and the non-essential amino acid (AA) glycine (Gly) and serine (Ser). However, the required concentrations and interactions of Thr and Gly + Ser, expressed as Gly equivalent (Glyequi), in LP diets are not fully understood. Therefore, the aim of this study was to investigate the effects of three LP (LP1-3) grower (11-24 days) and finisher (25-35 days) diets with 2% CP reduction compared to the control (C), differing in standardized ileal digestible (SID) Thr to lysine (Lys) ratio (C, LP1, LP3: 63%, LP2: 72%) and Glyequi levels (C: 15.65 g/kg, LP1: 13.74 g/kg, LP2: 13.70 g/kg, LP3: 15.77). The LP treatments did not impair the performance traits of broilers. The LP2 treatment with increased SID Thr-to-Lys ratio (+9.0%) resulted in significantly higher body weight gain and a more advantageous feed conversion ratio in the whole fattening compared to the control treatment with normal CP level (p < 0.05). The LP3 treatment containing swine meat meal with similar Glyequi levels compared to the normal CP treatment led to the most advantageous feed conversion ratio in the finisher phase and the highest nitrogen retention efficiency (p < 0.05). However, the LP3 treatment with a high starch-to-CP ratio negatively influenced the relative carcass weight and the ratio of abdominal fat of broilers (p < 0.05).
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Affiliation(s)
| | | | | | | | - László Pál
- Department of Nutrition and Nutritional Physiology, Institute of Physiology and Nutrition, Hungarian University and Agriculture and Life Sciences, Keszthely, Hungary
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7
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Macelline SP, Chrystal PV, Toghyani M, Selle PH, Liu SY. Dietary crude protein reductions in wheat-based diets with two energy densities compromised performance of broiler chickens from 15 to 36 days post-hatch. Poult Sci 2023; 102:102932. [PMID: 37517362 PMCID: PMC10400805 DOI: 10.1016/j.psj.2023.102932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 07/06/2023] [Accepted: 07/07/2023] [Indexed: 08/01/2023] Open
Abstract
This study was designed to investigate the impacts of 2 energy densities (13.0 and 12.5 MJ/kg ME) in wheat-based diets with 3 tiers of CP concentrations (210, 190, and 170 g/kg) on the performance of broiler chickens. The parameters assessed included growth performance (15-36 d posthatch), carcass traits, nutrient utilization, starch-protein digestive dynamics, apparent ileal amino acid digestibility coefficients, and the free amino acid and ammonia (NH3) concentrations in systemic plasma. Also, the feasibility of substituting soybean meal with canola meal in 190 g/kg CP diets was investigated. The dietary CP reduction from 210 to 170 g/kg significantly compromised weight gain by 12.4% (1,890 vs. 2158 g/bird) and FCR by 5.33% (1.501 vs. 1.425). The 0.5 MJ energy density reduction compromised FCR by 3.25% (1.525 vs. 1.477; P = 0.013) in birds offered 170 g/kg CP diets. Reducing dietary CP and energy densities interactively influenced (P = 0.027) apparent metabolizable energy (AME) and nitrogen corrected metabolizable energy (AMEn) (P = 0.022) such that reducing dietary CP increased these parameters but reducing dietary energy densities decreased AME and AMEn. The 150 g/kg canola meal inclusion with the elimination of soybean meal displayed some promise. Dietary CP reductions (and increased nonbound amino acid inclusions) linearly associated with increased plasma ammonia (NH3) concentrations (r = -0.607; P = 0.010) and plasma NH3 was linearly related to depressed weight gains (r = -0.565; P = 0.018). The association of dietary non-protein-bound amino acid (NPBAA) inclusions and elevated plasma NH3 concentrations have profound implications for the successful development of reduced-CP, wheat-based broiler diets.
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Affiliation(s)
- Shemil P Macelline
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney NSW 2006, Australia; Poultry Research Foundation, The University of Sydney, Camden NSW 2570, Australia
| | - Peter V Chrystal
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney NSW 2006, Australia; Complete Feed Solutions, Hornsby NSW 2071, Australia; Howick 2145, New Zealand
| | - Mehdi Toghyani
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney NSW 2006, Australia; Poultry Research Foundation, The University of Sydney, Camden NSW 2570, Australia
| | - Peter H Selle
- Poultry Research Foundation, The University of Sydney, Camden NSW 2570, Australia; Sydney School of Veterinary Science, The University of Sydney, Sydney NSW 2006, Australia
| | - Sonia Y Liu
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney NSW 2006, Australia; Poultry Research Foundation, The University of Sydney, Camden NSW 2570, Australia.
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8
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Strifler P, Horváth B, Such N, Farkas V, Wágner L, Dublecz K, Pál L. Effects of Feeding Low Protein Diets with Different Energy-to-Protein Ratios on Performance, Carcass Characteristics, and Nitrogen Excretion of Broilers. Animals (Basel) 2023; 13:ani13091476. [PMID: 37174513 PMCID: PMC10177200 DOI: 10.3390/ani13091476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/22/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
This study shows the effects of feeding low protein (LP) diets with different energy-to-protein ratios were evaluated on the production parameters, carcass composition, meat quality, nitrogen retention, and excreta composition of broilers. A total of 576-day-old Ross 308 broilers were fed a control diet (C) and three LP diets containing 1.5% less crude protein than diet C for 41 days. The LP1 treatment was isocaloric with diet C, while the dietary apparent metabolizable energy corrected by nitrogen (AMEn) levels in the case of the LP2 and LP3 treatments were reduced by 1.5% and 3%, respectively. The LP diets were supplemented with six crystalline essential amino acids (AA) to meet the standardized ileal digestible AA requirements of broilers. The LP1 treatment did not affect the performance parameters of broilers and increased the breast meat yield, the nitrogen retention and decreased drip loss of breast meat and the total-N and uric acid-N nitrogen excretion of birds in comparison with the C group. Although the energy-reduced LP2 and LP3 diets resulted in lower final body weight, they did not affect the carcass composition, breast meat quality, nitrogen retention, and excreta composition of birds compared with the control treatment.
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Affiliation(s)
- Patrik Strifler
- Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Georgikon Campus, 8360 Keszthely, Hungary
| | | | - Nikoletta Such
- Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Georgikon Campus, 8360 Keszthely, Hungary
| | - Valéria Farkas
- Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Georgikon Campus, 8360 Keszthely, Hungary
| | - László Wágner
- Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Georgikon Campus, 8360 Keszthely, Hungary
| | - Károly Dublecz
- Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Georgikon Campus, 8360 Keszthely, Hungary
| | - László Pál
- Institute of Physiology and Nutrition, Hungarian University of Agriculture and Life Sciences, Georgikon Campus, 8360 Keszthely, Hungary
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Mousa MA, Asman AS, Ali RMJ, Sayed RKA, Majrashi KA, Fakiha KG, Alhotan RA, Selim S. Impacts of Dietary Lysine and Crude Protein on Performance, Hepatic and Renal Functions, Biochemical Parameters, and Histomorphology of Small Intestine, Liver, and Kidney in Broiler Chickens. Vet Sci 2023; 10:vetsci10020098. [PMID: 36851402 PMCID: PMC9965792 DOI: 10.3390/vetsci10020098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 12/30/2022] [Accepted: 01/23/2023] [Indexed: 02/03/2023] Open
Abstract
The present study aimed to investigate the effects of increasing dietary lysine (Lys) levels with an adequate dietary crude protein (CP) content, as well as the effects of a reduction in dietary CP content with the recommended amino acid (AAs) level, on the performance, blood biochemical parameters, and histomorphology of the duodenum, liver, and kidney in broiler chickens. A total of 500 broiler chickens were randomly distributed into five dietary treatment groups, following a completely randomized design, where, at the beginning, the control group (C) was fed a diet containing the standard CP and Lys levels: 23% CP with 1.44% Lys during the starter period; 21.5% CP with 1.29% Lys during the growing period; and 19.5% CP with 1.16% Lys during the finishing period. The Lys content was increased by 10% above the recommended control basal requirements in the second group (Gr1) and by 20% in the third group (Gr2), while using the same recommended CP percentage as the C group. The fourth group (Gr3) had a 1% lower CP content and the fifth group had a 2% lower CP content than the C group, with the same recommended AA level as the C group. Increasing the Lys content in the Gr1 group improved the broilers' weight gains (p < 0.05) during the starter, growing, and finishing periods. Decreasing dietary CP with the standard AA levels (Gr3 and Gr4) did not significantly affect (p > 0.05) the live weight gain, feed intake, or feed conversion ratio (FCR) of the broilers compared with those fed with the C diet. Blood total bilirubin, direct and indirect bilirubin, triglycerides, cholesterol, low-density lipoprotein (LDL), and very LDL were not different among the experimental groups. However, blood aspartate aminotransferase levels were increased (p < 0.05) in the Gr1 and Gr3 groups compared with the other treatment groups. All dietary treatments decreased the serum creatinine levels (p < 0.05) compared with the C group. The Gr2 broilers had greater serum total protein and globulin (p < 0.05) than those receiving the other treatments. Increasing dietary Lys levels resulted in a significant improvement in duodenum villus height and width (p < 0.05), while the low-CP diets resulted in shorter villi length and width, along with degenerated areas and lymphocytic infiltration. Low dietary CP content induced hepatocyte disorganization and moderate degeneration, along with vacuolated hepatic cells, excessive connective tissue, and lymphocytic infiltration. The cortical regions of the kidney exhibited obvious alterations in the Gr3 and Gr4 groups and large interstitial spaces were found between tubules. Renal tubules in the Gr3 and Gr4 groups were smaller in size and some of these tubules were atrophied. In conclusion, reducing dietary CP levels to 1% or 2% lower than the recommended level did not negatively affect growth performance, inducing minimal influence on the blood metabolic indicators of health status, and resulting in moderate alterations to the histomorphology of the duodenum, liver, and kidney. Furthermore, increasing the Lys content by 10% above the recommended level improved the growth performance, health status, and histomorphology of the duodenum, liver, and kidney in broiler chickens.
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Affiliation(s)
- Mohamed A. Mousa
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Sohag University, Sohag 82425, Egypt
| | - Ahamed S. Asman
- Department of Biochemistry, Faculty of Veterinary Medicine, Sohag University, Sohag 82425, Egypt
| | - Reham M. J. Ali
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Sohag University, Sohag 82425, Egypt
| | - Ramy K. A. Sayed
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Sohag University, Sohag 82425, Egypt
| | - Kamlah A. Majrashi
- Biological Sciences Department, College of Science & Arts, King Abdulaziz University, Rabigh 21911, Saudi Arabia
| | - Khloud G. Fakiha
- Department of Biology, College of Science, University of Jeddah, Jeddah 21493, Saudi Arabia
| | - Rashed A. Alhotan
- Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Shaimaa Selim
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Menoufia University, Shibin El-Kom 32514, Egypt
- Correspondence:
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Low-protein diets for broilers: Current knowledge and potential strategies to improve performance and health, and to reduce environmental impact. Anim Feed Sci Technol 2023. [DOI: 10.1016/j.anifeedsci.2023.115574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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11
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Reducing Dietary Crude Protein in Broiler Diets Positively Affects Litter Quality Without Compromising Growth Performance Whereas A Reduction in Dietary Electrolyte Balance Further Improves Litter Quality But Worsens Feed Efficiency. Anim Feed Sci Technol 2023. [DOI: 10.1016/j.anifeedsci.2023.115571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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12
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Liang Y, Zheng X, Wang J, Yang H, Wang Z. Different amino acid supplementation patterns in low-protein diets on growth performance and nitrogen metabolism of goslings from 1 to 28 days of age. Poult Sci 2022; 102:102395. [PMID: 36571878 PMCID: PMC9803941 DOI: 10.1016/j.psj.2022.102395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 11/29/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022] Open
Abstract
The investigation aimed to explore the suitable amino acid (AA) supplementation pattern for goslings under low-protein diets. A total of 364 1-day-old male goslings were randomly divided into 4 experimental groups, with 7 pens containing 13 goslings each. The 4 groups were control (CP, 18.55%), LPM (CP, 15.55% + major AA), LPA (CP, 15.55% + all AA), and LPR (CP, 15.55% + AA content reduced proportionally to the control's CP). The corn-soybean meal diets are formulated according to the ideal AA model of goose and its nutritional requirements. The results indicated that the ADG and BW were the lowest, and the F: G was the highest in LPR (P < 0.05); the other three groups were not significantly different (P > 0.05). The ADFI and mortality were not different among all the groups (P > 0.05). Among the AA content in serum and breast muscle, lysine in serum significantly decreased compared with the control (P < 0.05). The UREA content was approximately 2-fold higher in the LPR group than in the LPM and LPA groups (P < 0.05). No difference in IgA, IgG, IgM, and IgE levels was observed among the groups (P > 0.05). The nitrogen excretion was decreased in LPM and LPA compared to the control and LPR (P < 0.05). Nitrogen deposition did not differ among groups (P > 0.05). Nitrogen utilization was highest in the LPA and LPM groups, followed by the control group and LPR (P < 0.05). In conclusion, the patterns of supplementation of major AA and all AA in low-protein diets (CP, 15.55%) had no adverse effect on the growth performance compared with the control (CP, 18.55%) of the goslings. Besides, the two patterns could decrease nitrogen excretion and increase nitrogen utilization. Furthermore, from the perspective of dietary cost and environmental protection, the pattern of supplementing major AA in a corn-soybean meal low-protein diet is suggested.
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Affiliation(s)
- Y.Q. Liang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province 225009, PR China
| | - X.C. Zheng
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province 225009, PR China
| | - J. Wang
- Jiangsu Agri-animal Husbandry Vocational College, Taizhou, Jiangsu Province 225300, PR China
| | - H.M. Yang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province 225009, PR China
| | - Z.Y. Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province 225009, PR China,Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu Province 225000, PR China,Corresponding author:
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Ajao AM, White D, Kim WK, Olukosi OA. Partial Replacement of Soybean Meal with Canola Meal or Corn DDGS in Low-Protein Diets Supplemented with Crystalline Amino Acids-Effect on Growth Performance, Whole-Body Composition, and Litter Characteristics. Animals (Basel) 2022; 12:ani12192662. [PMID: 36230403 PMCID: PMC9559617 DOI: 10.3390/ani12192662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/28/2022] [Accepted: 09/29/2022] [Indexed: 11/05/2022] Open
Abstract
A 42-day study was conducted to explore the application of supplemental amino acids (AA) in low-protein diets with soybean meal (SBM), canola meal (CM) or corn distillers dried grain with solubles (cDDGS) as the main protein feedstuffs. The responses of interest were growth performance, carcass yield, whole-body composition, litter ammonia and litter N. On d 0, a total of 540 Cobb 500 (off-sex) male broilers were allocated to 36 floor pens. All the birds received one starter diet that met nutrient requirements during the first 10d. Thereafter, six experimental diets were provided in grower and finisher phases. The diets included a positive control (PC): a corn−SBM diet with adequate protein. The protein level of the negative control (NC) was decreased by 45 g/kg relative to the PC. The next two diets had the same protein levels as the NC but with cDDGS added at 50 or 125 g/kg. The last two diets had the same CP as the NC but with CM added at 50 or 100 g/kg. All the low-protein diets had the same level of standardized ileal digestible indispensable AA according to Cobb 500 recommended level. Gly and Ser were added as sources of non-specific N. The dietary protein reduction in corn−SBM diets at both phases decreased (p < 0.05) weight gain and increased (p < 0.05) feed conversion ratio (FCR). Increasing levels of cDDGS or CM, at a constant CP level, linearly decreased (p < 0.05) the weight gain and feed intake, whereas increasing CM level linearly increased (p < 0.05) FCR in the grower and finisher phases. The eviscerated and carcass yields decreased, whereas the fat yield increased (p < 0.05) with reduced protein in corn−SBM diet. Increasing levels of cDDGS and CM at a constant CP level quadratically decreased (p < 0.05) the eviscerated weight, whereas the fat weight linearly decreased (p < 0.05) with increasing levels of cDDGS and CM. The birds receiving the PC diet had a lower (p < 0.05) lean muscle (%) and a higher fat (%) compared to birds receiving the NC diet at d 21. However, on d42, birds receiving the PC diet had decreased (p < 0.05) bone mineral density, bone mineral content and lean weight compared to those receiving the NC diet. The litter ammonia increased (p < 0.05) with the increasing levels of protein in the SBM diets. In conclusion, 50 g/kg inclusion levels of CM and cDDGS at the same low-protein levels as SBM produced a similar growth response to the NC, whereas higher levels were detrimental. Hence under the conditions of the current experiment, complete replacement of SBM with DDGS or CM in low-protein diets was not feasible.
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Greenhalgh S, Hamilton EJ, Macelline SP, Toghyani M, Chrystal PV, Liu SY, Selle PH. Dietary crude protein concentrations and L-carnitine inclusions interactively influence performance parameters of grower broiler chickens offered sorghum-based diets. Anim Feed Sci Technol 2022. [DOI: 10.1016/j.anifeedsci.2022.115392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Selle PH, Macelline SP, Greenhalgh S, Chrystal PV, Liu SY. Identifying the shortfalls of crude protein-reduced, wheat-based broiler diets. ANIMAL NUTRITION 2022; 11:181-189. [PMID: 36263404 PMCID: PMC9562441 DOI: 10.1016/j.aninu.2022.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 06/07/2022] [Accepted: 07/27/2022] [Indexed: 11/23/2022]
Abstract
The objective of this review is to identify the shortfalls of wheat-based, crude protein (CP)-reduced diets for broiler chickens as wheat is inferior to maize in this context but to inconsistent extents. Inherent factors in wheat may be compromising gut integrity; these include soluble non-starch polysaccharides (NSP), amylase trypsin inhibitors (ATI) and gluten. Soluble NSP in wheat induce increased gut viscosities, which can lead to compromised gut integrity, which is not entirely ameliorated by NSP-degrading feed enzymes. Wheat ATI probably compromise gut integrity and may also have the capacity to increase endogenous amino acid flows and decrease apparent starch and protein digestibilities. Gluten inclusions of 20 g/kg in a maize-soy diet depressed weight gain and feed intake and higher gluten inclusions have been shown to activate inflammatory cytokine-related genes in broiler chickens. Further research is required, perhaps particularly in relation to wheat ATI. The protein content of wheat is typically higher than maize; importantly, this results in higher inclusions of non-bound amino acids in CP-reduced broiler diets. These higher inclusions could trigger post-enteral amino acid imbalances, leading to the deamination of surplus amino acids and the generation of ammonia (NH3) which, if not adequately detoxified, results in compromised growth performance from NH3 overload. Thus, alternatives to non-bound amino acids to meet amino acid requirements in birds offered CP-reduced, wheat-based diets merit evaluation. The digestion of wheat starch is more rapid than that of maize starch which may be a disadvantage as the provision of some slowly digestible starch in broiler diets may enhance performance. Alternatively, slowly digestible starch may result in more de novo lipogenesis. Therefore, it may prove instructive to evaluate CP-reduced diets based on maize-wheat and/or sorghum–wheat blends rather than entirely wheat. This would reduce non-bound amino acid inclusions by lowering dietary CP derived from feed grains and may enhance starch digestive dynamics by retarding starch digestion rates. Also, the use of biomarkers to monitor gut integrity in broiler chickens is examined where calprotectin, ovotransferrin and possibly citrulline appear to hold promise, but their validation requires further research.
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Greenhalgh S, Lemme A, Dorigam JCDP, Chrystal PV, Macelline SP, Liu SY, Selle PH. Dietary crude protein concentrations, feed grains and whey protein interactively influence apparent digestibility coefficients of amino acids, protein, starch and performance of broiler chickens. Poult Sci 2022; 101:102131. [PMID: 36115254 PMCID: PMC9485194 DOI: 10.1016/j.psj.2022.102131] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 07/31/2022] [Accepted: 08/06/2022] [Indexed: 11/17/2022] Open
Abstract
The present study was designed to investigate the impacts of dietary crude protein (CP) concentrations (220 and 180 g/kg) in either maize- or wheat-based diets, without or with 25 g/kg inclusions of whey powder (WP) concentrate on performance parameters and apparent amino acid digestibility coefficients in broiler chickens. The maize and wheat used in this study had CP levels of 84 and 119 g/kg, respectively. The 2 × 2 × 2 factorial array of 8 dietary treatments was offered to a total of 336 off-sex, male Ross 308 chicks from 7 to 35 d post-hatch with 7 replicate cages (6 birds per cage) per treatment. A treatment interaction (P = 0.016) between dietary CP and feed grains was detected for weight gains, where birds offered 180 g/kg maize-based diets displayed a weight gain advantage of 6.74% (2,628 vs. 2,462 g/bird) compared to their wheat-based counterparts. An interaction (P = 0.022) between feed grains and whey protein was observed for FCR as the addition of WP to maize-based diets improved FCR by 3.45% (1.314 vs. 1.361), but compromised FCR in wheat-based diets by 2.98% (1.415 vs. 1.374). A treatment interaction (P = 0.038) between dietary CP and feed grains was recorded for relative abdominal fat-pad weights weight gains as birds offered 180 g/kg CP maize-based diets had 43.4% (11.17 vs. 7.79 g/kg) heavier fat-pads than their wheat-based counterparts. Following the reduction in dietary-CP, apparent amino acid digestibility coefficients were depressed to greater extents in wheat-based diets. However, significant interactions between CP and feed grains were found in 14 of the 16 amino acids assessed and significant interactions between CP and WP were observed for 15 amino acids. Maize was the more suitable feed grain in terms of weight gain and FCR in 180 g/kg CP diets despite causing greater fat deposition. The inclusion of WP in reduced-CP diets did not enhance bird performance. Data generated indicate concentrations of microbial amino acids in distal ileal digesta were depressing apparent amino acid digestibility coefficients, which was more evident in wheat-based diets. Higher gut viscosities in birds offered wheat-based diets may have facilitated the proliferation of microbiota along the small intestine.
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Dang DX, Cho S, Kim IH. Silybum marianum seed extract supplementation
positively affects the body weight of weaned piglets by improving voluntary feed
intake. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2022; 64:696-706. [PMID: 35969696 PMCID: PMC9353349 DOI: 10.5187/jast.2022.e39] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/09/2022] [Accepted: 05/10/2022] [Indexed: 11/30/2022]
Abstract
This study was conducted to evaluate the effects of dietary supplementation of
Silybum marianum seed (SMS) extract on the growth
performance, nutrient digestibility, fecal noxious gas emission, and hematology
parameters in weaned piglets. A total of 120, 21-day-old weaned piglets
([Yorkshire × Landrace] × Duroc) were randomly assigned to 3
groups based on the average initial body weight (6.46 ± 0.45 kg). There
were 8 replicate pens per treatment and 5 pigs (mixed sex) per pen. The
experimental period was 42 days. Dietary groups included a basal diet, and a
basal diet supplemented with 0.05% or 0.10% SMS extract. Feeding weaned piglets
with SMS extract containing diet significantly increased average daily gain and
average daily feed intake. Additionally, the supplementation of SMS extract had
no significant effects on nutrient digestibility, serum hematology, and fecal
noxious gas emission parameters. We considered that the supplementation of SMS
extract had positive effects on the voluntary feed intake in weaned piglets,
thus improving growth performance.
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Affiliation(s)
- De Xin Dang
- Department of Animal Resource &
Science, Dankook University, Cheonan 31116, Korea
| | - Sungbo Cho
- School of Mongolian Medicine, Inner
Mongolia University for Nationalities, Tongliao 028000, Inner
Mongolia Autonomous Region, China
| | - In Ho Kim
- Department of Animal Resource &
Science, Dankook University, Cheonan 31116, Korea
- Corresponding author: In Ho Kim,
Department of Animal Resource & Science, Dankook University, Cheonan
31116, Korea. Tel: +82-41-550-3652, E-mail:
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18
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Effects of low crude protein content and glycine supplementation on broiler chicken performance, carcass traits, and litter quality. Livest Sci 2022. [DOI: 10.1016/j.livsci.2022.104930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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Spirulina platensis meal inclusion effects on broilers fed a reduced protein diet. J APPL POULTRY RES 2022. [DOI: 10.1016/j.japr.2021.100199] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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20
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Kim WK, Singh AK, Wang J, Applegate T. Functional role of branched chain amino acids in poultry: a review. Poult Sci 2022; 101:101715. [PMID: 35299066 PMCID: PMC8927823 DOI: 10.1016/j.psj.2022.101715] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 12/20/2021] [Accepted: 12/31/2021] [Indexed: 01/08/2023] Open
Abstract
This review provides insight into the effects of the branched-chain amino acids (BCAA: leucine, isoleucine, and valine) on the growth, production performance, immunity, and intestinal health of poultry. Besides providing nitrogen substrates and carbon framework for energy homeostasis and transamination, BCAA also function as signaling molecules in the regulation of glucose, lipid, and protein synthesis via protein kinase B and as a mechanistic target of the rapamycin (AKT-mTOR) signaling pathway that is important for muscle accretion. The level of leucine is generally high in cereals and an imbalance in the ratio among the 3 BCAA in a low protein diet would produce a negative effect on poultry growth performance. This occurs due to the structural similarity of the 3 BCAA, which leads to metabolic competition and interference with the enzymatic degradation pathway. Emerging evidence shows that the inclusion of BCAA is essential for the proper functioning of the innate and adaptive immune system and the maintenance of intestinal mucosal integrity. The recommended levels of BCAA for poultry are outlined by NRC (1994), but commercial broilers and laying hen breed standards also determine their own recommended levels. In this review, it has been noted that the requirement for BCAA is influenced by the diet type, breed, and age of the birds. Additionally, several studies focused on the effects of BCAA in low protein diets as a strategy to reduce nitrogen excretion. Notably, there is limited research on the inclusion ratio of BCAA in a supplemental form as compared to the ingredient-bound form which would affect the dynamics of utilization in different disease-challenged conditions, especially those affecting digesta passage ratio. In summary, this review encompasses the role of BCAA as functional AA and discusses their physiological effects on the productivity and health of poultry. The observations and interpretations of this review can guide future research to adjust the recommended levels of BCAA in feeding programs in the absence of subtherapeutic antibiotics in poultry.
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Affiliation(s)
- Woo Kyun Kim
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA.
| | - Amit Kumar Singh
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - Jinquan Wang
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - Todd Applegate
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
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21
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Sedghi M, Golian A, Afsar A, Mirshekar R. Optimisation of branched-chain amino acid requirements for 15–21-day-old broiler chickens by using the Taguchi method. ANIMAL PRODUCTION SCIENCE 2022. [DOI: 10.1071/an21238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Dang DX, Yun KS, Kim IH. Achyranthes Japonica Nakai root extract supplementation improves apparent nutrient digestibility, caecum microbiota, and excreta gas emission in broiler chicks. CANADIAN JOURNAL OF ANIMAL SCIENCE 2021. [DOI: 10.1139/cjas-2020-0164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This study investigated the effects of supplementing Achyranthes Japonica Nakai (AJN) root extract to the diet of broiler chicks on growth performance, nutrient digestibility, caecum microbiota, excreta gas emission, and relative weight of organs. A total of 270 1-day-old Ross 308 broiler chicks (42.11 ± 0.18 g) were randomly allotted into 3 dietary treatments according to the initial body weight. Each treatment had 5 replicate cages with 18 birds per cage. The experimental period was 35 days (starter, days 1-7; grower, days 8-21; finisher, days 22-35). Dietary treatments were corn-soybean meal-based basal diet supplemented with 0.000, 0.015, or 0.030 % AJN root extract. The apparent total tract digestibility of nitrogen (P = 0.025) increased linearly with the increase of the dosage of AJN root extract, while the counts of E. coli in caecum (P = 0.038) and excreta ammonia emission (P = 0.003) decreased linearly. However, the growth performance (P > 0.05) and the relative weight of organs (P > 0.05) did not differ among the dietary groups. In conclusion, AJN root extract could increase the nutrient digestibility and reduce the noxious gas emission by reducing the caecum harmful microbiota in a dose-dependent manner.
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Affiliation(s)
- De Xin Dang
- Dankook University - Cheonan Campus, 65383, Cheonan, Chungnam, Korea (the Republic of)
| | - Kwan Sik Yun
- Weve The State Apt, Synergen Inc, Bucheon-si, Gyeonggi-do, Korea (the Republic of)
| | - In Ho Kim
- Dankook University Department of Animal Resources Science, 477893, Department of Animal Resource, and Science, Department of Animal Resource and Science, Dankook University, Cheonan, Choongnam, 31116, South Korea, Cheonan, Korea (the Republic of), 31116
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Selle PH, Cantor DI, McQuade LR, McInerney BV, de Paula Dorigam JC, Macelline SP, Chrystal PV, Liu SY. Implications of excreta uric acid concentrations in broilers offered reduced-crude protein diets and dietary glycine requirements for uric acid synthesis. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2021; 7:939-946. [PMID: 34703911 PMCID: PMC8526770 DOI: 10.1016/j.aninu.2021.03.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/17/2021] [Accepted: 03/24/2021] [Indexed: 01/11/2023]
Abstract
In a previous experiment, male Ross 308 broiler chickens were offered dietary treatments with 3 levels of crude protein (222, 193, 165 g/kg) and 3 feed grains (ground maize, ground wheat, whole wheat) from 7 to 35 d post-hatch. Maize-based diets supported superior growth performance in comparison to wheat-based diets. Uric acid concentrations in excreta were retrospectively determined and related to total nitrogen (N) excreta concentrations. Uric acid concentrations ranged from 28.5 to 69.4 mg/g and proportions of uric acid-N to total excreta-N ranged from 27.4% to 42.6% in broiler chickens offered the 3 × 3 factorial array of dietary treatments. Proportions of uric acid-N to total N in excreta in birds offered the 165 g/kg CP, maize-based diet were significantly lower by 10.6 percentage units (27.4% versus 38.0%; P = 0.00057) than their wheat-based counterparts. Total excreta analysed had been collected from 35 to 37 d post-hatch when feed intakes and excreta outputs were monitored. There were linear relationships between proportions of uric acid-N to total N in excreta in birds offered the three 165 g/kg CP diets with weight gain (r = -0.587; P = 0.010), feed intake (r = -0.526; P = 0.025) and feed conversion ratios (r = 0.635; P = 0.005). The possibility that increasing uric acid-N proportions in excreta is indicative of excessive ammonia accumulations compromising growth performance is discussed. The mean proportion of dietary glycine involved in uric acid excretion was 49.2% across all dietary treatments but ranged from 25.0% to 80.9%. Thus, the appropriate amount of dietary glycine is variable and largely dependent on the volume of uric acid synthesised and excreted.
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Affiliation(s)
- Peter H. Selle
- Poultry Research Foundation within The University of Sydney, Camden, NSW 2570, Australia
- Sydney School of Veterinary Science, The University of Sydney, Sydney, NSW 2006, Australia
| | - David I. Cantor
- Australian Proteome Analysis Facility, Macquarie University, Sydney, NSW 2109, Australia
| | - Leon R. McQuade
- Australian Proteome Analysis Facility, Macquarie University, Sydney, NSW 2109, Australia
| | - Bernard V. McInerney
- Australian Proteome Analysis Facility, Macquarie University, Sydney, NSW 2109, Australia
| | | | - Shemil P. Macelline
- Poultry Research Foundation within The University of Sydney, Camden, NSW 2570, Australia
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, NSW 2006, Australia
| | - Peter V. Chrystal
- Poultry Research Foundation within The University of Sydney, Camden, NSW 2570, Australia
- Baiada Poultry Pty Limited, Pendle Hill, NSW 2145, Australia
| | - Sonia Y. Liu
- Poultry Research Foundation within The University of Sydney, Camden, NSW 2570, Australia
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, NSW 2006, Australia
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Dao HT, Swick RA. New insights into arginine and arginine-sparing effects of guanidinoacetic acid and citrulline in broiler diets. WORLD POULTRY SCI J 2021. [DOI: 10.1080/00439339.2021.1967708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Hiep Thi Dao
- School of Environmental and Rural Science, Faculty of Science, Agriculture, Business and Law, University of New England, Armidale, New South Wales, Australia
- Faculty of Animal Science, Vietnam National University of Agriculture, Hanoi, Vietnam
| | - Robert A. Swick
- School of Environmental and Rural Science, Faculty of Science, Agriculture, Business and Law, University of New England, Armidale, New South Wales, Australia
- Poultry Hub Australia, University of New England, Armidale, New South Wales, Australia
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25
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Ma M, Geng S, Liu M, Zhao L, Zhang J, Huang S, Ma Q. Effects of Different Methionine Levels in Low Protein Diets on Production Performance, Reproductive System, Metabolism, and Gut Microbiota in Laying Hens. Front Nutr 2021; 8:739676. [PMID: 34692750 PMCID: PMC8526799 DOI: 10.3389/fnut.2021.739676] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 09/06/2021] [Indexed: 12/19/2022] Open
Abstract
This study investigated the effects of different levels of methionine (Met) in a low protein diet on the production performance, reproductive system, metabolism, and gut microbial composition of laying hens to reveal the underlying molecular mechanism of Met in a low protein diet on the host metabolism and gut microbial composition and function of hens. A total of 360 healthy 38-week-old Peking Pink laying hens with similar body conditions and egg production (EP) were randomly divided into four groups with nine replicates per treatment and 10 hens per replicate. The hens in each treatment group were fed low protein diets containing different levels of Met (0.25, 0.31, 0.38, and 0.47%, respectively) for 12 weeks. Feed and water were provided ad libitum throughout the trial period. The results showed that, compared with the 0.25% Met group, the final body weight (FBW), average daily gain (ADG), EP, egg weight (EW), and average daily feed intake (ADFI) in the other groups were significantly increased and feed egg ratio (FER) was decreased. Meanwhile, the EW and yield of abdominal fat (AFY) in the 0.47% Met group were higher than those in other groups. The triglyceride (TG), estradiol (E2), total protein (TP), albumin (ALB), and immunoglobulin A (IgA) in the 0.38 and 0.47% Met groups were higher than those in other groups. In addition, 16S rRNA gene sequencing revealed that there was no difference in the Sobs index, ACE index, and Shannon index among all groups. However, it is worth noting that feeding low protein diets with Met changed the gut microbial composition (e.g., the supplementation of Met increased the level of Lactobacillus and decreased the proportion of Faecalibacterium). Also, our results showed that the changes in gut microbial composition induced by the diets with different levels of Met were closely related to the changes of key parameters: ADFI, EW, FBW, TG, EM, EP, ADG, FER, and uric acid (UA). Our results highlight the role of adding an appropriate amount of Met to the low protein diet in laying hens, which could improve the gut microbial composition, production performance, reproductive system, and nutrient metabolism of laying hens. In conclusion, this study suggested that when the Met level was 0.38%, the production performance of the laying hens was pretty good.
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Affiliation(s)
- Miaolin Ma
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shunju Geng
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Meiling Liu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Lihong Zhao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Jianyun Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shimeng Huang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Qiugang Ma
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
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Cappelaere L, Le Cour Grandmaison J, Martin N, Lambert W. Amino Acid Supplementation to Reduce Environmental Impacts of Broiler and Pig Production: A Review. Front Vet Sci 2021; 8:689259. [PMID: 34381834 PMCID: PMC8350159 DOI: 10.3389/fvets.2021.689259] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 06/21/2021] [Indexed: 11/26/2022] Open
Abstract
Poultry and swine farming are large contributors to environmental impacts, such as climate change, eutrophication, acidification, and air and water pollution. Feed production and manure management are identified as the main sources of these impacts. Reducing dietary crude protein levels is a nutritional strategy recognized to both decrease the use of high-impact feed ingredients and alter manure composition, reducing emissions of harmful components. For a successful implementation of this technique, feed-grade amino acid supplementation is crucial to maintaining animal performance. Reducing crude protein lowers nitrogen excretion, especially excess nitrogen excreted in urea or uric acid form, improving nitrogen efficiency. At the feed-gate, low–crude protein diets can reduce the carbon footprint of feed production through changes in raw material inclusion. The magnitude of this reduction mainly depends on the climate change impact of soybean meal and its land-use change on the feed-grade amino acids used. Reducing dietary crude protein also lowers the environmental impact of manure management in housing, storage, and at spreading: nitrogen emissions from manure (ammonia, nitrates, nitrous oxide) are reduced through reduction of nitrogen excretion. Moreover, synergetic effects exist with nitrogen form, water excretion, and manure pH, further reducing emissions. Volatilization of nitrogen is more reduced in poultry than in pigs, but emissions are more studied and better understood for pig slurry than poultry litter. Ammonia emissions are also more documented than other N-compounds. Low–crude protein diets supplemented with amino acids is a strategy reducing environmental impact at different stages of animal production, making life cycle assessment the best-suited tool to quantify reduction of environmental impacts. Recent studies report an efficient reduction of environmental impacts with low–crude protein diets. However, more standardization of limits and methods used is necessary to compare results. This review summarizes the current knowledge on mitigation of environmental impacts with low–crude protein diets supplemented with amino acids in poultry and swine, its quantification, and the biological mechanisms involved. A comparison between pigs and poultry is also included. It provides concrete information based on quantified research for decision making for the livestock industry and policy makers.
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Kidd MT, Maynard CW, Mullenix GJ. Progress of amino acid nutrition for diet protein reduction in poultry. J Anim Sci Biotechnol 2021; 12:45. [PMID: 33814010 PMCID: PMC8020538 DOI: 10.1186/s40104-021-00568-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 02/07/2021] [Indexed: 12/23/2022] Open
Abstract
There is growing interest among nutritionists in feeding reduced protein diets to broiler chickens. Although nearly a century of research has been conducted providing biochemical insights on the impact of reduced protein diets for broilers, practical limitation still exists. The present review was written to provide insights on further reducing dietary protein in broilers. To construct this review, eighty-nine peer reviewed manuscripts in the area of amino acid nutrition in poultry were critiqued. Hence, nutritional research areas of low protein diets, threonine, glycine, valine, isoleucine, leucine, phenylalanine, histidine, and glutamine have been assessed and combined in this text, thus providing concepts into reduced protein diets for broilers. In addition, linkages between the cited work and least cost formation ingredient and nutrient matrix considerations are provided. In conclusion, practical applications in feeding reduced protein diets to broilers are advancing, but more work is warranted.
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Affiliation(s)
- M T Kidd
- Center of Excellence for Poultry Science, Division of Agriculture, University of Arkansas System, Fayetteville, AR, 72701, USA.
| | - C W Maynard
- Center of Excellence for Poultry Science, Division of Agriculture, University of Arkansas System, Fayetteville, AR, 72701, USA
| | - G J Mullenix
- Center of Excellence for Poultry Science, Division of Agriculture, University of Arkansas System, Fayetteville, AR, 72701, USA
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Liu SY, Macelline SP, Chrystal PV, Selle PH. Progress towards reduced-crude protein diets for broiler chickens and sustainable chicken-meat production. J Anim Sci Biotechnol 2021; 12:20. [PMID: 33678187 PMCID: PMC7938486 DOI: 10.1186/s40104-021-00550-w] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 01/05/2021] [Indexed: 01/10/2023] Open
Abstract
The prime purpose of this review is to explore the pathways whereby progress towards reduced-crude protein (CP) diets and sustainable chicken-meat production may be best achieved. Reduced-CP broiler diets have the potential to attenuate environmental pollution from nitrogen and ammonia emissions; moreover, they have the capacity to diminish the global chicken-meat industry's dependence on soybean meal to tangible extents. The variable impacts of reduced-CP broiler diets on apparent amino acid digestibility coefficients are addressed. The more accurate identification of amino acid requirements for broiler chickens offered reduced-CP diets is essential as this would diminish amino acid imbalances and the deamination of surplus amino acids. Deamination of amino acids increases the synthesis and excretion of uric acid for which there is a requirement for glycine, this emphasises the value of so-called "non-essential" amino acids. Starch digestive dynamics and their possible impact of glucose on pancreatic secretions of insulin are discussed, although the functions of insulin in avian species require clarification. Maize is probably a superior feed grain to wheat as the basis of reduced-CP diets; if so, the identification of the underlying reasons for this difference should be instructive. Moderating increases in starch concentrations and condensing dietary starch:protein ratios in reduced-CP diets may prove to be advantageous as expanding ratios appear to be aligned to inferior broiler performance. Threonine is specifically examined because elevated free threonine plasma concentrations in birds offered reduced-CP diets may be indicative of compromised performance. If progress in these directions can be realised, then the prospects of reduced-CP diets contributing to sustainable chicken-meat production are promising.
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Affiliation(s)
- Sonia Yun Liu
- Poultry Research Foundation within The University of Sydney, Camden Campus, 425 Werombi Road, Camden, NSW, 2570, Australia.
- School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW, 2006, Australia.
| | - Shemil P Macelline
- Poultry Research Foundation within The University of Sydney, Camden Campus, 425 Werombi Road, Camden, NSW, 2570, Australia
- School of Life and Environmental Sciences, The University of Sydney, Camperdown, NSW, 2006, Australia
| | - Peter V Chrystal
- Poultry Research Foundation within The University of Sydney, Camden Campus, 425 Werombi Road, Camden, NSW, 2570, Australia
- Baiada Poultry Pty Limited, Pendle Hill, NSW, 2145, Australia
| | - Peter H Selle
- Poultry Research Foundation within The University of Sydney, Camden Campus, 425 Werombi Road, Camden, NSW, 2570, Australia.
- Sydney School of Veterinary Science, The University of Sydney, Sydney, NSW, 2006, Australia.
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Dao HT, Sharma NK, Bradbury EJ, Swick RA. Response of meat chickens to different sources of arginine in low-protein diets. J Anim Physiol Anim Nutr (Berl) 2021; 105:731-746. [PMID: 33410556 DOI: 10.1111/jpn.13486] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 11/15/2020] [Accepted: 11/17/2020] [Indexed: 12/14/2022]
Abstract
Arginine activity in broiler diets can be supplied by L-arginine (Arg), guanidinoacetic acid (GAA) and L-citrulline (Cit), all of which are commercially available. This study was conducted to assess the effects of Arg source and level on broiler performance, nutrient digestibility and carcass parameters. Day-old Ross 308 cockerels (n = 768) were assigned to one of eight dietary treatments using a completely randomized design: normal protein (NP), low protein deficient in Arg (LP) and LP with two levels of either Arg (0.238% and 0.476%), GAA (0.309% and 0.618%) or Cit (0.238 and 0.476%). The LP was 5 percentage points lower in protein level than the NP. Wheat, sorghum, soya bean meal, canola meal, and meat and bone meal-based diets were fed over three feeding phases to 6 replicate floor pens with 16 birds each. Compared to NP, birds fed LP had reduced feed intake (FI, p < 0.001), reduced body weight gain (BWG, p < 0.001) and increased feed conversion ratio (FCR, p < 0.001) from day 0 to day 35. Additions of Arg or Cit to the LP at both levels resulted in increased BWG and reduced FCR (p < 0.05). Birds fed LP with GAA added had lower FCR (p < 0.05) but not higher BWG (p > 0.05) compared with the LP observed from day 0 to day 35. Supplementation of Arg, Cit and the low level of GAA to LP resulted in increased carcass yield, bone length, diameter and ash (p < 0.05) but did not increase ileal energy or nitrogen digestibility (p > 0.05). The findings indicate that Cit is an efficacious source of Arg activity in Arg-deficient diets.
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Affiliation(s)
- Hiep T Dao
- Faculty of Science, Agriculture, Business and Law, School of Environmental and Rural Science, University of New England, Armidale, New South Wales, Australia
| | - Nishchal K Sharma
- Faculty of Science, Agriculture, Business and Law, School of Environmental and Rural Science, University of New England, Armidale, New South Wales, Australia
| | | | - Robert A Swick
- Faculty of Science, Agriculture, Business and Law, School of Environmental and Rural Science, University of New England, Armidale, New South Wales, Australia
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Cho HM, Wickramasuriya SS, Macelline SP, Hong JS, Lee B, Heo JM. Evaluation of crude protein levels in White Pekin duck diet for 21 days after hatching. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2020; 62:628-637. [PMID: 33089228 PMCID: PMC7553845 DOI: 10.5187/jast.2020.62.5.628] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 06/11/2020] [Accepted: 06/19/2020] [Indexed: 11/25/2022]
Abstract
In poultry diets, a requirement of crude protein is one of the most important
factors in poultry productivity. Besides, the Pekin duck requirement of crude
protein is still not clear. This experiment was conducted to determine the crude
protein requirement of Pekin duck on diet formulation by investigation of growth
performance, carcass trait, and analysis of blood parameter for a hatch to
21-day (d) of age. A total of 432 male White Pekin ducks were randomly allocated
to six levels of crude protein (i.e., 15%, 17%, 19%, 21%, 23%, and 25%) to give
six replicate pens per treatment with 12 ducklings per each pen. Body weight and
feed intake were measured weekly by calculating feed conversion ratio and
protein intake. Two ducklings each pen was euthanized via cervical dislocation
for analysis of carcass trait and plasma blood on 21-d of age. Data were applied
on both prediction linear-plateau and quadratic-plateau models by estimation of
the crude protein requirements. Data were applied on both prediction
linear-plateau and quadratic-plateau models by estimation of the crude protein
requirements. The level of crude protein requirements of Pekin ducks for 21 days
after the hatch was estimated to be 20.63% and 23.25% diet for maximum daily
gain, and minimum feed conversion ratio, respectively.
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Affiliation(s)
- Hyun Min Cho
- Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, Korea
| | | | - Shemil Priyan Macelline
- School of Life and Environmental Science, Faculty of Science, The University of Sydney, Sydney NSW 2006, Australia
| | - Jun Seon Hong
- Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, Korea
| | - Bowon Lee
- Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, Korea
| | - Jung Min Heo
- Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, Korea
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Impact of Rye Inclusion in Diets for Broilers on Performance, Litter Quality, Foot Pad Health, Digesta Viscosity, Organ Traits and Intestinal Morphology. SUSTAINABILITY 2020. [DOI: 10.3390/su12187753] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Rye could offer diverse benefits in terms of sustainability if it could replace parts of the main cereals, corn and wheat, in broiler diets. A total of 256 broilers, Ross 308, were randomly allocated into 32 pens. From day 14 till day 42, the birds were divided into four feeding groups (eight replicates each). The control group received a conventional finisher diet “control”, whereas in the other groups, a pelleted supplementary feed was offered (SFI to corn and SFII to rye), to which crushed corn (SFI-Corn) or squashed rye (SFII-Rye) was added. The fourth group received a mixture of 50% SFI-Corn and 50% SFII-Rye. The cereal level was increased weekly (5%, 10%, 20%, 30%) at the expense of the supplementary feeds. No significant effects were observed for body weight at d 42 and excreta viscosity between all groups. Overall, foot pad health was excellent. Compared to the control group, birds fed SFI-Corn displayed a significant increase in gizzard relative weight, whereas, in contrast to all other groups, ileal villus height was significantly lower. In conclusion, feeding SFI-Corn or SFII-Rye diets had no negative influences on performance, litter quality and digesta viscosity, whereas SFI-Corn partially affected ileal morphology.
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Influence of branched chain amino acid inclusion in diets varying in ingredient composition on broiler performance, processing yields, and pododermatitis and litter characteristics. J APPL POULTRY RES 2020. [DOI: 10.1016/j.japr.2020.05.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Attia YA, Bovera F, Wang J, Al-Harthi MA, Kim WK. Multiple Amino Acid Supplementations to Low-Protein Diets: Effect on Performance, Carcass Yield, Meat Quality and Nitrogen Excretion of Finishing Broilers under Hot Climate Conditions. Animals (Basel) 2020; 10:E973. [PMID: 32503244 PMCID: PMC7341316 DOI: 10.3390/ani10060973] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/08/2020] [Accepted: 05/12/2020] [Indexed: 11/16/2022] Open
Abstract
The objective of this study was to evaluate the effect of low-protein diets with amino acid supplementation on growth performance, carcass yield, meat quality and nitrogen excretion of broilers raised under hot climate conditions during the finisher period. In trial 1, broilers from 28 to 49 days of age were fed 18% crude protein (CP) as a positive control or 15% CP supplemented with (1) DL-methionine (Met) + L-lysine (Lys), (2) Met + Lys + L-Arginine (Arg), or (3) Met + Lys + L-Valine (Val). In trial 2, broilers from 30 to 45 days of age, were fed an 18% CP diet as a positive control or 15% CP supplemented with Met, Lys, Arg, Val, L-Isoleucine (Ile) or combination with glycine (Gly) and/or urea as nitrogen sources: (1) Met + Lys, (2) Met + Lys + Arg, (3) Met + Lys + Val, (4) Met + Lys + Ile, (5) Met + Lys + Arg +Val + Ile + Gly, and (6) Met+ Lys + Arg + Val + Ile + Gly + urea. Protein use was improved by feeding low-protein amino acid-supplemented diets as compared to the high-protein diet. Feeding 15% crude protein diet supplemented with only methionine and lysine had no negative effects on carcass yield, CP, total lipids and moisture% of breast meat while decreasing nitrogen excretion by 21%.
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Affiliation(s)
- Youssef A. Attia
- Arid Land Agriculture Department, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Fulvia Bovera
- Department of Veterinary Medicine and Animal Production, University of Napoli Federico II, via F. Delpino1, 80137 Napoli, Italy
| | - Jinquan Wang
- Department of Poultry science, University of Georgia, Athens, GA 30602, USA;
| | - Mohammed A. Al-Harthi
- Arid Land Agriculture Department, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Woo Kyun Kim
- Department of Poultry science, University of Georgia, Athens, GA 30602, USA;
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Abou-Elkhair R, Ahmed H, Ketkat S, Selim S. Supplementation of a low-protein diet with tryptophan, threonine, and valine and its impact on growth performance, blood biochemical constituents, immune parameters, and carcass traits in broiler chickens. Vet World 2020; 13:1234-1244. [PMID: 32801578 PMCID: PMC7396355 DOI: 10.14202/vetworld.2020.1234-1244] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 05/14/2020] [Indexed: 12/30/2022] Open
Abstract
AIM This study aimed to investigate the effects of protein reduction with supplementation of limiting amino acids (AA, tryptophan, threonine, and valine) on growth performance, blood biochemical, immunity parameters, and carcass traits in broiler chickens. MATERIALS AND METHODS Three hundred one-day-old broiler chicks were randomly allotted into three treatment groups, with five replicates per treatment and 20 broiler chickens per replicate. The three experimental diets were formulated with different dietary crude protein (CP) %, (control [CON] and CON with 1% [CP-1%] or 2% [CP-2%] less CP units) during the starter, grower, and finisher phases. The CP of the experimental diets were 22, 21, and 20% for the starting period (day 1-14); 20, 19, and 18% CP for the growing period (day 15-28); and 18, 17, and 16% CP for the finishing period (day 29-35) in CON, CP-1%, and CP-2%, respectively. The low-CP diets (CP-1% and CP-2%) were supplemented with combined AA, threonine+tryptophan+valine, to meet the respective levels of the CON diet. RESULTS The CP-2% group had greater (p<0.05; linear, p<0.05) final body weight and gain and better feed conversion ratio. The combined AA inclusion in the low-CP diet (CP-1% and CP-2%) increased (p<0.001; linear, p<0.001) carcass and breast meat yield as well as CP% of breast meat. The reduction of CP% with AA supplementation (CP-2%) decreased (p<0.05; linear, p<0.05) serum triglycerides, glutamate oxaloacetate transaminase, glutamate pyruvate transaminase, and alkaline phosphatase, while increased (p<0.01; linear, p<0.01) phagocytic activity and phagocytic index. The mRNA expression of splenic and cecal tonsil interleukin 4 and interferon gamma was upregulated (p<0.001; linear, p<0.001) in the low-CP diets supplemented with AA (CP-1% and CP-2%). Dietary supplementation with AA to low-protein diets improved (p<0.01; linear, p<0.01) the economic returns of broiler chickens. CONCLUSION A reduction of dietary CP and increased synthetic AA such as threonine, valine, and tryptophan should be considered to improve performance, health, and immunity in broiler chickens.
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Affiliation(s)
- Reham Abou-Elkhair
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, University of Sadat City, Egypt
| | - Hamada Ahmed
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Damanhour University, Egypt
| | - Sara Ketkat
- Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Alexandria University, Egypt
| | - Shaimaa Selim
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Menoufia University, Shibin El-Kom, 32514, Egypt
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Selle PH, Dorigam JCDP, Lemme A, Chrystal PV, Liu SY. Synthetic and Crystalline Amino Acids: Alternatives to Soybean Meal in Chicken-Meat Production. Animals (Basel) 2020; 10:E729. [PMID: 32331461 PMCID: PMC7222841 DOI: 10.3390/ani10040729] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/17/2020] [Accepted: 04/17/2020] [Indexed: 12/26/2022] Open
Abstract
: This review explores the premise that non-bound (synthetic and crystalline) amino acids are alternatives to soybean meal, the dominant source of protein, in diets for broiler chickens. Non-bound essential and non-essential amino acids can partially replace soybean meal so that requirements are still met but dietary crude protein levels are reduced. This review considers the production of non-bound amino acids, soybeans, and soybean meal and discusses the concept of reduced-crude protein diets. There is a focus on specific amino acids, including glycine, serine, threonine, and branched-chain amino acids, because they may be pivotal to the successful development of reduced-crude protein diets. Presently, moderate dietary crude protein reductions of approximately 30 g/kg are feasible, but more radical reductions compromise broiler performance. In theory, an 'ideal' amino acid profile would prevent this, but this is not necessarily the case in practice. The dependence of the chicken-meat industry on soybean meal will be halved if crude protein reductions in the order of 50 g/kg are attained without compromising the growth performance of broiler chickens. In this event, synthetic and crystalline, or non-bound, amino acids will become viable alternatives to soybean meal in chicken-meat production.
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Affiliation(s)
- Peter H. Selle
- Poultry Research Foundation, The University of Sydney, Camden NSW2570, Australia; (P.H.S.); (P.V.C.)
| | | | - Andreas Lemme
- Evonik Nutrition and Care GmbH, 63457 Hanau-Wolfgang, Germany (A.L.)
| | - Peter V. Chrystal
- Poultry Research Foundation, The University of Sydney, Camden NSW2570, Australia; (P.H.S.); (P.V.C.)
- Baiada Poultry Pty Limited, Pendle Hill NSW2145, Australia
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Camden NSW2570, Australia
| | - Sonia Y. Liu
- Poultry Research Foundation, The University of Sydney, Camden NSW2570, Australia; (P.H.S.); (P.V.C.)
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Camden NSW2570, Australia
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Hilliar M, Keerqin C, Girish CK, Barekatain R, Wu SB, Swick RA. Reducing protein and supplementing crystalline amino acids, to alter dietary amino acid profiles in birds challenged for subclinical necrotic enteritis. Poult Sci 2020; 99:2048-2060. [PMID: 32241490 PMCID: PMC7587694 DOI: 10.1016/j.psj.2019.11.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/11/2019] [Accepted: 11/13/2019] [Indexed: 02/05/2023] Open
Abstract
Necrotic enteritis (NE) is an infection of the gastrointestinal tract and is estimated to cost the global poultry industry billions of dollars annually. A study was conducted to examine whether reducing the crude protein might offset the severity of NE in broilers experimentally challenged with Eimeria spp. on day 9 and Clostridium perfringens on days 14 and 15. Furthermore, increasing the dietary amino acid (AA) density of the diet was also examined owing to identified benefits of improving performance compromised from low protein (LP) diets or NE. A 2 × 2 × 3 factorial arrangement of treatments at 6 replicates per treatment was used with 972 Ross 308 cockerels fed wheat-sorghum-soy-based diets to 35 D. Factors were NE challenge: no or yes; protein: standard (SP) or LP; and AA density: 100% AA, 115% with only essential AA (115% EAA) increased, and 115% AA with both essential and nonessential AA (115% AA) increased. The performance was measured in grower (days 7–21), finisher (days 21–35), and overall (day 7–35) periods. In addition, on day 16, intestinal lesion score and cecal short-chain fatty acids were measured. Only in nonchallenged birds fed LP diets, 115% AA increased grower feed intake (P < 0.01) and body weight gain (P < 0.05) compared to 115% EAA treatments. Challenge increased jejunal lesions (P < 0.001) with no difference between dietary treatments. Finisher body weight gain was greater in nonchallenged birds fed the 115% AA diets than in challenged birds (P < 0.05). Feeding diets with higher nonessential AA encouraged faster recovery from NE challenge. When fed the SP diets, NE challenge increased cecal butyric acid (P < 0.01) and total short-chain fatty acids (P < 0.05). The nutrient matrix used in LP diets does not favor beneficial butyric acid–producing bacteria. Using LP diets to mitigate NE severity does not offset the predisposing effect of E. spp. when attacking the gastrointestinal tract, and NE recovery is favored when feeding SP diets or additional AA.
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Affiliation(s)
- M Hilliar
- School of Environmental and Rural Science, University of New England, Armidale, 2351 NSW, Australia
| | - C Keerqin
- School of Environmental and Rural Science, University of New England, Armidale, 2351 NSW, Australia
| | - C K Girish
- Nutrition and Care, Animal Nutrition, Evonik (SEA) Pte. Ltd., 609927 Singapore
| | - R Barekatain
- South Australian Research and Development Institute, Roseworthy Campus, University of Adelaide, Roseworthy, 5371 SA, Australia
| | - S-B Wu
- School of Environmental and Rural Science, University of New England, Armidale, 2351 NSW, Australia
| | - R A Swick
- School of Environmental and Rural Science, University of New England, Armidale, 2351 NSW, Australia.
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37
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Hilliar M, Hargreave G, Girish CK, Barekatain R, Wu SB, Swick RA. Using crystalline amino acids to supplement broiler chicken requirements in reduced protein diets. Poult Sci 2020; 99:1551-1563. [PMID: 32111322 PMCID: PMC7587716 DOI: 10.1016/j.psj.2019.12.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Reducing dietary CP can reduce N pollution. Much research has been reported in corn-based diets; however, the amino acid (AA) profiles of wheat-based diets differ. Poor performance as a result of reduced protein (RP) has been overcome in corn-based diets with essential AA and glycine (Gly) supplementation. The current study examined RP levels and Gly in wheat-based diets. An industry standard protein (SP) diet plus 3 RP diets with and without Gly supplementation, to match the SP treatment at 0.713 and 0.648% digestible Gly for the grower and finisher periods respectively, were fed to male broilers from day 10 of age. Grower CP included 22.5, 20.6, 18.3, and 17.7% (days 10–21) and finisher CP included 19.7, 17.8, 16.2, and 15.5% (days 21–35). Performance, meat yield, N efficiency, water intake, and apparent ileal digestibility of N and AA were measured. No difference in body weight gain (BWG), feed intake, or feed conversion ratio (FCR) were observed at 20% CP compared to the SP treatment. However, further reducing protein reduced BWG (P < 0.001), feed intake (P < 0.001), and increased FCR (P < 0.001). Supplementation of 0.713% Gly in the grower period increased BWG (P < 0.001) and reduced FCR (P < 0.001). Relative meat yield was not affected by dietary protein, however reducing CP increased relative fat pad weight (P < 0.001). Nitrogen efficiency increased with decreased CP in both grower (R2 = 0.69) and finisher (R2 = 0.80) treatments. Water intake decreased (R2 = 0.83) with decreasing CP intake. Apparent ileal digestibility of AA and N were higher in RP diets (P < 0.05). The benefits of reduced water intake and increased N efficiency and the disadvantages of poor performance and increased body fat in RP corn-based diets have been identified in RP wheat-based diets. Furthermore, at 18.5% CP the supplementation of crystalline AA and Gly can maintain BWG and FCR observed in SP diets.
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Affiliation(s)
- M Hilliar
- School of Environmental and Rural Science, University of New England, Armidale, 2351 NSW, Australia.
| | - G Hargreave
- Baiada Poultry Pty Limited, Pendle Hill, 2145 NSW, Australia
| | - C K Girish
- Nutrition and Care, Animal Nutrition, Evonik (SEA) Pte. Ltd, 609927 Singapore
| | - R Barekatain
- South Australian Research and Development Institute, Roseworthy Campus, University of Adelaide, Roseworthy, 5371 SA, Australia
| | - S-B Wu
- School of Environmental and Rural Science, University of New England, Armidale, 2351 NSW, Australia
| | - R A Swick
- School of Environmental and Rural Science, University of New England, Armidale, 2351 NSW, Australia
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Greenhalgh S, McInerney BV, McQuade LR, Chrystal PV, Khoddami A, Zhuang MAM, Liu SY, Selle PH. Capping dietary starch:protein ratios in moderately reduced crude protein, wheat-based diets showed promise but further reductions generated inferior growth performance in broiler chickens. ACTA ACUST UNITED AC 2020; 6:168-178. [PMID: 32542197 PMCID: PMC7283513 DOI: 10.1016/j.aninu.2020.01.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 01/07/2020] [Accepted: 01/12/2020] [Indexed: 12/18/2022]
Abstract
The hypothesis that capping dietary starch:protein ratios would enhance the performance of broiler chickens offered reduced-crude protein (CP) diets was tested in this experiment. A total of 432 off-sex, male Ross 308 chicks were allocated to 7 dietary treatments from 7 to 35 d post-hatch. The experimental design consisted of a 3 × 2 factorial array of treatments with the seventh treatment serving as a positive control. Three levels of dietary CP (197.5, 180.0 and 162.5 g/kg) with either uncapped or capped dietary starch:protein ratios constituted the factorial array of treatments, whilst the positive control diet contained 215.0 g/kg CP. The positive control diet had an analysed dietary starch:protein ratio of 1.50 as opposed to a ratio of 1.68 in the uncapped 197.5 g/kg CP diet and 1.41 in the corresponding capped diet and the capped 197.5 g/kg CP diet displayed promise. The growth performance this diet matched the positive control but outperformed the uncapped 197.5 g/kg CP diet by 10.4% (2,161 vs. 1,958; P = 0.009) in weight gain, by 3.10% (3,492 vs. 3,387; P = 0.019) in feed intake on the basis of pair-wise comparisons and numerically improved FCR by 4.04% (1.616 vs. 1.684). However, the growth performance of birds offered the 180.0 and 162.5 g/kg CP dietary treatments was remarkably inferior, irrespective of dietary starch:protein ratios. This inferior growth performance was associated with poor feathering and even feather-pecking and significant linear relationships between feather scores and parameters of growth performance were observed. The amino acid profile of feathers was determined where cysteine, glutamic acid, glycine, proline and serine were dominant in a crude protein content of 931 g/kg. Presumably, the feathering issues observed were manifestations of amino acid inadequacies or imbalances in the more reduced-CP diets and consideration is given to the implications of these outcomes.
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Affiliation(s)
- Shiva Greenhalgh
- Poultry Research Foundation, The University of Sydney, Camden, NSW, Australia
| | - Bernard V McInerney
- Australian Proteome Analysis Facility, Macquarie University, Sydney, NSW, Australia
| | - Leon R McQuade
- Australian Proteome Analysis Facility, Macquarie University, Sydney, NSW, Australia
| | - Peter V Chrystal
- Poultry Research Foundation, The University of Sydney, Camden, NSW, Australia.,Baiada Poultry Pty Limited, Pendle Hill, NSW, Australia
| | - Ali Khoddami
- Poultry Research Foundation, The University of Sydney, Camden, NSW, Australia.,School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, NSW, Australia
| | - Molly A M Zhuang
- Poultry Research Foundation, The University of Sydney, Camden, NSW, Australia
| | - Sonia Y Liu
- Poultry Research Foundation, The University of Sydney, Camden, NSW, Australia.,School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, NSW, Australia
| | - Peter H Selle
- Poultry Research Foundation, The University of Sydney, Camden, NSW, Australia
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van Harn J, Dijkslag MA, van Krimpen MM. Effect of low protein diets supplemented with free amino acids on growth performance, slaughter yield, litter quality, and footpad lesions of male broilers. Poult Sci 2019; 98:4868-4877. [PMID: 30995304 PMCID: PMC6748714 DOI: 10.3382/ps/pez229] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 03/30/2019] [Indexed: 11/20/2022] Open
Abstract
A study with 884 Ross 308 male broilers, housed in 68 floor pens (0.75 m2) from 0 to 35 days of age was conducted to evaluate the effects of low crude protein (CP) diets, with partial replacement of soybean meal by free amino acids (AA), on performance, slaughter yields, litter quality and footpad lesions. During the first 11 d, all broilers received the same control starter diet (216 g/kg CP, 11.5 g/kg apparent fecal digestible (AFD) lysine, and 2900 kcal/kg AMEn). Thereafter, four experimental feeding programs with different levels of dietary CP (control and control with 1% (CP-1%), 2% (CP-2%) and 3% (CP-3%) less CP units) were provided in both the grower and finisher phase. In the control grower and finisher diet, the CP content was 208 and 198 g/kg, respectively. All diets were formulated to meet or exceed the recommendations concerning AFD AA, and to be iso-caloric within each feeding phase. Feed and water were provided for ad libitum intake during the entire experimental period. None of the low CP feeding programs affected body weight gain, feed intake or mortality from 0 to 35 d. However, CP conversion was improved with the reduction of CP content of the diet. Broilers fed the CP-2% or CP-3% feeding program had an improved feed conversion ratio. Broilers fed the low CP protein feeding programs had a better litter quality and less footpad lesions, compared to broilers fed the control feeding program. Broilers fed the CP-3% feeding program had a lower breast meat yield than broilers fed the control feeding program. Slaughter yields of broilers fed CP-1% or CP-2% feeding program did not differ from the control feeding program. This study demonstrated that the CP content of grower and finisher diets can be reduced by 2.2–2.3% units without adverse effects on growth performance of broilers, while CP reduction seems promising to reduce nitrogen excretion from broiler houses, improve bird welfare, and reduces dependence on vegetable protein sources.
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Affiliation(s)
- J van Harn
- Wageningen Livestock Research, 6700 AH Wageningen, the Netherlands
| | - M A Dijkslag
- ForFarmers, Kwinkweerd 12, 7241 CW Lochem, the Netherlands
| | - M M van Krimpen
- Wageningen Livestock Research, 6700 AH Wageningen, the Netherlands
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Broilers fed a low protein diet supplemented with synthetic amino acids maintained growth performance and retained intestinal integrity while reducing nitrogen excretion when raised under poor sanitary conditions. Poult Sci 2019; 99:949-958. [PMID: 32036986 PMCID: PMC7587901 DOI: 10.1016/j.psj.2019.10.035] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 10/13/2019] [Accepted: 10/13/2019] [Indexed: 01/21/2023] Open
Abstract
The present study investigated the effects of supplementing a low protein (LP) diet supplemented with key essential amino acids (AA) to broilers on growth performance, intestinal tract function, blood metabolites, and nitrogen excretion when the animals were maintained under various sanitary conditions for 35 D after hatching. Three hundred eighty-four one-day-old male broilers (Ross 308) were randomly allotted to groups that received one of 6 dietary treatments in a 2 × 3 factorial arrangement (i.e., 2 environmental conditions and 3 dietary treatments) to give 8 replicates per treatment. Broilers were challenged with 2 environmental conditions (sanitary vs. poor sanitary). The dietary treatments were (1) high protein (HP) diet, (2) LP diet, and (3) LP diet with synthetic key essential AA (LPA): the LP diet was supplemented with synthetic AA up to the required levels for broilers. On day 14, birds consumed the LP diet impaired growth performance compared with those fed the HP diet, while the average daily weight gain-to-feed conversion ratio of birds fed the LPA diet improved to the level of birds fed the HP diet under poor sanitary conditions (P < 0.05). Broilers raised under poor sanitary conditions and fed the LP diet displayed higher (P < 0.05) zonula occludens (ZO-1) expression on day 14 than broilers fed either the HP or LPA diet. Under sanitary conditions, birds fed HP and LPA diets showed higher villus height and crypt depth compared with those of broilers fed the LP diet on day 35. Moreover, broilers raised in the poor sanitary environment had higher (P < 0.05) serum endotoxins than those raised in the sanitary environment. Broilers fed the LPA diet showed reduced (P < 0.05) nitrogen excretion on days 14 and 35 compared with those fed the LP and HP diets independent of the environment. In conclusion, the LPA diet did not impair growth performance under poor sanitary conditions for 14 D after hatch while resulting in lower nitrogen excretion in any environment conditions throughout the experiment.
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Moss AF, Chrystal PV, McQuade LR, Cadogan DJ, Yun Liu S, Selle PH. The influence of exogenous phytase on the post-enteral availability of amino acids in broiler chickens offered wheat-based diets. Anim Feed Sci Technol 2019. [DOI: 10.1016/j.anifeedsci.2019.114300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ullrich C, Langeheine M, Brehm R, Taube V, Rosillo Galera M, Rohn K, Popp J, Visscher C. Influence of Different Methionine Sources on Performance and Slaughter Characteristics of Broilers. Animals (Basel) 2019; 9:E984. [PMID: 31752397 PMCID: PMC6912822 DOI: 10.3390/ani9110984] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 11/15/2019] [Indexed: 02/07/2023] Open
Abstract
Sustainably produced poultry meat with consideration of animal health poses a challenge for broiler production. Low protein diets with high amounts of synthetic amino acids (AAs) like methionine (Met) are the consequence. In a five-week feeding trial, 360 broilers (Ross 308) assigned to four feeding groups were offered protein-reduced complete diets (starter: 20% crude protein (CP); grower: 18.5% CP; finisher: 17.5% CP), supplemented with essential AAs. The "MHA" group received DL-2-hydroxy-4-(methylthio) butanoic acid (DL-HMTBA; trade name: MHA®), groups "L" and "DL" the respective Met source in equivalent concentrations each exceeding the nutritional recommendations. "R-MHA" ("R" for "reduced") received the minimum required level (using MHA as Met source). Performance exceeded performance goals without differences between the groups. The average feed conversion ratio (FCR) amounted to 1.35. The carcass/body weight ratio of R-MHA was significantly lower (0.782) compared to DL (0.808) and L (0.809). Breast meat of R-MHA contained significantly more fat (144 g/kg dry matter (DM)) compared to L (104 g/kg DM) and significantly lower CP content (R-MHA: 838 g/kg DM; L: 875 g/kg DM). The results indicated possible improvement in slaughter yield by protein-reduced diets supplemented with L-Met, thus recommending further research focusing on the Met influence.
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Affiliation(s)
- Cristina Ullrich
- Institute for Animal Nutrition, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, D-30173 Hanover, Germany;
| | - Marion Langeheine
- Institute for Anatomy, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, D-30173 Hanover, Germany; (M.L.); (R.B.)
| | - Ralph Brehm
- Institute for Anatomy, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, D-30173 Hanover, Germany; (M.L.); (R.B.)
| | - Venja Taube
- BEST 3 Gefluegelernaehrung GmbH, Ringstrasse 16, D-27239 Twistringen, Germany;
| | | | - Karl Rohn
- Institute for Biometry, Epidemiology and Information Processing, University of Veterinary Medicine Hannover, Foundation, Bünteweg 2, D-30559 Hanover, Germany;
| | - Johanna Popp
- Institute of Food Quality and Food Safety, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, D-30173 Hanover, Germany;
| | - Christian Visscher
- Institute for Animal Nutrition, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, D-30173 Hanover, Germany;
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Allameh S, Toghyani M. Effect of dietary valine supplementation to low protein diets on performance, intestinal morphology and immune responses in broiler chickens. Livest Sci 2019. [DOI: 10.1016/j.livsci.2019.09.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Hofmann P, Siegert W, Kenéz Á, Naranjo VD, Rodehutscord M. Very Low Crude Protein and Varying Glycine Concentrations in the Diet Affect Growth Performance, Characteristics of Nitrogen Excretion, and the Blood Metabolome of Broiler Chickens. J Nutr 2019; 149:1122-1132. [PMID: 31162587 DOI: 10.1093/jn/nxz022] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/04/2019] [Accepted: 01/30/2019] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The minimum to which dietary crude protein (CP) level for broiler chickens can be reduced without decreasing growth and the glycine equivalent (Glyequi) concentration required are not known. The plasma metabolome might reflect dietary influences on physiological processes. OBJECTIVE The aim of this study was to investigate the effect of 3 low CP levels with 4 Glyequi concentrations on growth and characteristics of nitrogen excretion, and to identify plasma metabolome variations. METHODS Male Ross308 broiler chickens were provided 1 of 12 dietary treatments in 84 metabolism cages (10/cage) from days 7 to 21. Three diets with 163 (CP163), 147 (CP147), and 132 (CP132) g CP/kg were formulated, each containing 12, 15, 18, and 21 g Glyequi/kg. Essential amino acid concentrations were the same in all diets. Animals and feed were weighed on days 7 and 21 to determine average daily gain (ADG) and gain:feed ratio (G:F). Excreta were collected from days 18 to 21 to analyze nitrogenous components, and blood was obtained on day 21 to conduct a metabolome analysis. RESULTS Two-factor ANOVA showed significant interaction effects for ADG, G:F, and nitrogen efficiency (P < 0.001). Reduction of CP decreased ADG and G:F, and increased nitrogen efficiency. Glyequi supplementation increased ADG (by 7.9 g/d) and G:F (by 0.07 g/g) at CP132. The ADG (by 2.4 g/d) at CP147 and G:F (by 0.02 g/g) at CP147 and CP163 increased up to 15 g Glyequi/kg. Multivariate statistical analysis showed an influence of Glyequi on plasma acylcarnitine and lysophosphatidylcholine concentrations, and a decrease of plasma phosphatidylcholine and sphingomyelin concentrations with reduced CP. CONCLUSIONS These results suggest that a nutrient other than Glyequi limited growth when CP was reduced from CP163 to CP147, and that the response of broiler chickens to Glyequi is dependent on the dietary CP level. Plasma metabolites indicate dietary influences on the physiological state of the animals.
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Affiliation(s)
- Philipp Hofmann
- Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
| | - Wolfgang Siegert
- Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
| | - Ákos Kenéz
- Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
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Abstract
1. Dietary glycine equivalents (Glyequi) for glycine and serine represent the first-limiting non-essential amino acid in poultry diets. Targeted adjustment of essential amino acids and Glyequi in diets can considerably decrease crude protein (CP) in poultry diets below the limit of CP reduction when only essential amino acids are adjusted. 2. The level to which CP can be reduced in diets adequate in Glyequi depends on the objective; which includes reducing dietary CP without affecting performance and increasing nitrogen utilisation efficiency. Dietary CP can be reduced to ~15-16% in diets for up to 21 d old broiler chicken without affecting growth performance compared to responses to diets with currently common CP concentrations by considering Glyequi in the diet formulation. Dietary CP can be further reduced to maximise nitrogen utilisation efficiency; however, this leads to reduced growth performance. 3. The dietary Glyequi requirement of poultry varies depending on other dietary constituents. In broiler chickens up to 21 days of age, the dietary Glyequi requirement is estimated to be between 11 and 20 g/kg. This estimate is influenced by the concentrations of Cys and the endogenous Glyequi precursors, threonine and choline. Urinary nitrogen excretion seems to be a major determinant of the response to dietary Glyequi, because it is needed for uric acid formation. 4. The variable requirement for dietary Glyequi means that its static recommendation in poultry diets would lead to high safety margins in Glyequi supply or the risk of Glyequi deficiency. Variable recommendations for dietary Glyequi concentrations would help to supply birds based on their specific requirements and could reduce nitrogen emissions originating from poultry farming.
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Affiliation(s)
- W Siegert
- Institut für Nutztierwissenschaften, Universität Hohenheim , Stuttgart , Germany
| | - M Rodehutscord
- Institut für Nutztierwissenschaften, Universität Hohenheim , Stuttgart , Germany
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Hilliar M, Swick RA. Nutritional implications of feeding reduced-protein diets to meat chickens. ANIMAL PRODUCTION SCIENCE 2019. [DOI: 10.1071/an19221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Global interest has emerged for the implementation of reduced-protein diets for meat chickens. The necessity of their development stems from environmental impacts and health and welfare concerns surrounding current meat-chicken production. Reduced crude-protein diets are possible with the increasing affordability of supplemental crystalline amino acids. Supplementing broiler feed with methionine, lysine and threonine is common practice in industry and has enabled a reduction of dietary crude protein to the levels currently used. However, further reduction of dietary protein often results in poor performance. Several nutritional options have been investigated with a focus on crystalline essential and non-essential amino acids such as glycine. However, reducing the crude protein of meat-chicken diets does change the ingredient and nutrient profile aside from the amino acid composition. Alterations in non-protein nitrogen concentrations, dietary electrolyte balance, minerals, fibre and carbohydrates, methyl-donors and polyphenols must be considered in formulations to ensure successful implementation of reduced-protein diets. The ability to maintain performance with reduced-protein diets may benefit sustainability and longevity of the meat-chicken industry.
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Influence of Reduced Protein Content in Complete Diets with a Consistent Arginine–Lysine Ratio on Performance and Nitrogen Excretion in Broilers. SUSTAINABILITY 2018. [DOI: 10.3390/su10113827] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The current discussion concerning resource-efficient broiler production inevitably leads to diets with lowered crude protein (CP) levels. Therefore, the hypothesis was formed that crude protein reduction far below the recommended levels can significantly lower the nitrogen (N) content in litter, if essential amino acids are added and a constant lysine-arginine ratio is guaranteed. In a five-week feeding trial, 360 ROSS 308 broilers of both sexes were randomly assigned to four feeding groups with six replicates each with a standard three-phase feeding program (d 1–7, d 8–14, d 15–35). The control group was offered a complete diet with a common protein content found in practice (CP-% as fed; starter: 21.5, grower: 20.5, finisher: 20.0; lysine/arginine: 100/115). In the experimental diets the lysine/arginine ratio was constant, whereas the protein content was lowered in steps of 1.00 percent each with simultaneous supplementation of growth limiting amino acids. Feeding a diet with a 2.00 percent reduced protein content led to higher body weights after 34 days compared to the control (2329 g vs. 2192 g). The N content in the total litter decreased significantly with a 2.00 and 3.00 percent reduction in the CP content (51.2 vs. 46.2 or rather 36.2 g/kg dry matter (DM)). Meticulous balanced protein-reduced diets therefore allow a significant environmental relief.
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Xie M, Jiang Y, Tang J, Wen ZG, Zhang Q, Huang W, Hou SS. Effects of low-protein diets on growth performance and carcass yield of growing White Pekin ducks. Poult Sci 2018; 96:1370-1375. [PMID: 27665005 DOI: 10.3382/ps/pew349] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 08/26/2016] [Indexed: 11/20/2022] Open
Abstract
A dose-response experiment with 6 analyzed dietary crude protein (CP) levels (13.54, 14.37, 14.71, 16.04, 16.61, and 17.22%) was conducted to investigate the effects of low-protein diets on growth performance and carcass yield of growing White Pekin ducks from 14 to 35 d of age. All diets were formulated to contain a similar dietary energy level and the standardized ileal digestible amino acid profile including lysine, methionine, threonine, tryptophan, arginine, isoleucine, valine, and glycine. A total of 288 14-day-old male White Pekin ducks were divided into 6 experimental treatments and each treatment contained 8 replicate pens of 6 birds. Ducks were raised in wire-floor pens from 14 to 35 d of age. At 35 d of age, the weight gain, feed intake, feed/gain, and the yield of carcass, breast meat, leg meat, and abdominal fat of ducks from each pen were measured. As dietary CP decreased from 17.22 to 13.54%, weight gain and feed intake were not affected (P > 0.05) but feed/gain increased when dietary CP decreased to 13.54% (P < 0.05). On the other hand, the yield of carcass, leg meat, and breast meat was not influenced by reducing dietary CP (P > 0.05) but the abdominal fat increased when dietary CP was 13.54% (P < 0.05). Based on broken-line regression, the 14.81 and 14.94% were the minimum dietary CP to keep the feed/gain and abdominal fat similar to the ducks fed with 17.22% CP diets, respectively. In summary, with crystalline amino acid supplementation based on a similar standardized ileal digestible amino acid profile, it was possible to formulate the low-protein diets containing about 15% CP for Pekin ducks without adverse effects on their growth performance and carcass yield.
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Affiliation(s)
- M Xie
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China 100193
| | - Y Jiang
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China 100193
| | - J Tang
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China 100193
| | - Z G Wen
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China 100081
| | - Q Zhang
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China 100193
| | - W Huang
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China 100193
| | - S S Hou
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China 100193
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Jariyahatthakij P, Chomtee B, Poeikhampha T, Loongyai W, Bunchasak C. Effects of adding methionine in low-protein diet and subsequently fed low-energy diet on productive performance, blood chemical profile, and lipid metabolism-related gene expression of broiler chickens. Poult Sci 2018. [DOI: 10.3382/ps/pey034] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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50
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Awad EA, Idrus Z, Soleimani Farjam A, Bello AU, Jahromi MF. Growth performance, duodenal morphology and the caecal microbial population in female broiler chickens fed glycine-fortified low protein diets under heat stress conditions. Br Poult Sci 2018; 59:340-348. [PMID: 29433333 DOI: 10.1080/00071668.2018.1440377] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
1. This study was undertaken to examine the effect of feeding glycine (Gly)-fortified low protein (LP) diets on the growth performance, duodenal morphology and caecal microbial populations of broiler chickens raised under unheated, cyclic or constant heat stress environmental conditions. 2. From d 1 to 21 (starter phase), an equivalent number of birds were fed either a normal protein (NP) diet or a LP diet fortified with Gly. From d 22 to 42 (grower phase), an equivalent number of birds from each starter diet were distributed to one of the following dietary groups: (i) an NP diet during the starter and grower phases (NPNP), (ii) an NP diet during the starter phase and a LP diet during the grower phase (NPLP), (iii) an LP diet during the starter phase and an NP diet during the grower phase (LPNP) or (iv) LP diets during both phases (LPLP). 3. Commencing from d 22, an equivalent number of birds from each dietary group were exposed to (i) 23 ± 1°C throughout (unheated), (ii) 34 ± 1°C for 7 h each day from 10:00 to 17:00 (cyclic heat) or (iii) 34 ± 1°C throughout (constant heat). 4. Feeding the LP diet during the starter phase resulted in feed intake (FI), weight gain (WG), feed conversion ratios (FCR) and energy efficiency ratios (EER) similar to those for the NP diet. The birds fed the LP diet had a significantly higher protein efficiency ratio (PER) compared with the birds fed the NP diet. 5. During the grower phase, there were significant diet × temperature interactions for F, WG, FCR, PER, EER, villus height, crypt depth and caecal Clostridia. The birds fed the NPLP and LPLP diets had lower FI, WG and EER, higher FCR, shorter villus height and crypt depth and higher caecal Clostridia compared with the birds fed LPNP and NPNP diets under constant heat stress. However, feeding birds the NPLP and LPLP diets resulted in FI, WG, EER, FCR, morphology parameters and caecal Clostridia equivalent to the birds fed LPNP and NPNP diets, as well as improved PER, under unheated and cyclic heat stress conditions. 6. In conclusion, our results indicate that Gly-fortified LP diets can be fed to broilers under normal and acute heat stress environmental conditions without any adverse effects on performance. However, the use of such LP diets can be detrimental to broilers under chronic heat stress conditions.
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Affiliation(s)
- E A Awad
- a Institute of Tropical Agriculture and Food Security , Universiti Putra Malaysia , Serdang , Malaysia.,b Department of Poultry Production , University of Khartoum , Khartoum North , Sudan
| | - Z Idrus
- a Institute of Tropical Agriculture and Food Security , Universiti Putra Malaysia , Serdang , Malaysia.,c Department of Animal Science , Universiti Putra Malaysia , Serdang , Malaysia.,d Halal Products Research Institute , Universiti Putra Malaysia , Serdang , Malaysia
| | - A Soleimani Farjam
- a Institute of Tropical Agriculture and Food Security , Universiti Putra Malaysia , Serdang , Malaysia
| | - A U Bello
- a Institute of Tropical Agriculture and Food Security , Universiti Putra Malaysia , Serdang , Malaysia
| | - M F Jahromi
- a Institute of Tropical Agriculture and Food Security , Universiti Putra Malaysia , Serdang , Malaysia
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