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Jespersen JC, Sommer KM, White CS, Froebel LE, Dorigam JCDP, Harsh BN, Dilger RN. Effects of a coccidiosis challenge on dietary methionine recommendations in broilers. Poult Sci 2024; 103:103502. [PMID: 38350387 PMCID: PMC10875611 DOI: 10.1016/j.psj.2024.103502] [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: 11/29/2023] [Revised: 01/16/2024] [Accepted: 01/22/2024] [Indexed: 02/15/2024] Open
Abstract
Broilers are commonly exposed to coccidiosis infections, and the use of dietary strategies to reduce losses in growth performance has practical implications for the poultry industry. Methionine (Met) is typically the first limiting amino acid for broilers and is involved in metabolic and immunological pathways; however, literature is conflicting on how dietary Met requirements are affected by environmental stressors. Our objective was to assess how the Met requirement changes during coccidiosis based on results of growth performance, carcass traits, and health outcomes. Two trials were conducted using 780 male Ross 308 broiler chicks in floor pens randomly assigned to 1 of 12 experimental treatments. All birds received common starter (d 0-10) and finisher (d 24-35, Trial 2 only) diets, and only differed based on their assigned experimental grower diet (d 10-24). Trial 1 experimental grower diets ranged from 2.61 to 6.21 g/kg digestible Met. Trial 2 experimental grower diets were formulated to contain 15% below, at, or 15% above the Met requirement determined in Trial 1. Birds were exposed to a coccidiosis challenge on d 11, with blood and tissue collection (1 bird/pen) on d 18 and carcass processing on d 35 (2 birds/pen) in Trial 2. Data were analyzed using a 1- or 2-way ANOVA. A non-linear regression analysis was conducted in Trial 1 to determine the Met requirement of 4.32 g of digestible Met/kg of diet using BW gain. Coccidiosis infection reduced (P < 0.05) growth performance during the experimental grower and overall study periods in Trial 2. Increasing dietary Met from below requirement to meeting requirement during the grower period improved (P < 0.001) BW gain and feed conversion ratio (FCR), but this effect was only significant between treatments below and above the requirement for the overall study period. There was an interactive effect (P = 0.038) on FCR for the overall study period. These findings provide evidence that the Met requirement is likely increased during coccidiosis based on growth performance outcomes.
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Affiliation(s)
- J C Jespersen
- Department of Animal Sciences, University of Illinois, Urbana, IL, USA
| | - K M Sommer
- Department of Animal Sciences, University of Illinois, Urbana, IL, USA
| | - C S White
- Department of Animal Sciences, University of Illinois, Urbana, IL, USA
| | - L E Froebel
- Department of Animal Sciences, University of Illinois, Urbana, IL, USA
| | | | - B N Harsh
- Department of Animal Sciences, University of Illinois, Urbana, IL, USA
| | - R N Dilger
- Department of Animal Sciences, University of Illinois, Urbana, IL, USA.
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Jespersen JC, de Paula Dorigam JC, Whelan R, Dilger AC, Oelschlager ML, Sommer KM, Gorenz BE, White RR, Dilger RN. Defining optimal dietary starch, oil, and amino acid inclusion levels for broilers experiencing a coccidiosis challenge. Poult Sci 2024; 103:103335. [PMID: 38176364 PMCID: PMC10806127 DOI: 10.1016/j.psj.2023.103335] [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: 09/29/2023] [Revised: 11/27/2023] [Accepted: 11/28/2023] [Indexed: 01/06/2024] Open
Abstract
Alternative methods to alleviate coccidiosis in broilers are of interest to producers, including dietary strategies to minimize disruptions in growth rate and efficiency when faced with health challenges. Our objective was to determine optimal combinations of dietary starch, amino acids (AA), and oil to benefit productivity of broilers experiencing Eimeria-induced immune activation. Two trials were conducted using 1,536 male Ross 308 broiler chicks in floor pens randomly assigned to 1 of 17 experimental treatments. All birds received common starter (d 0-10) and finisher (d 24-35) diets, and only differed based on their assigned experimental grower diet (d 10-24). Trial 1 experimental grower diets ranged from 2,700 to 3,300 kcal/kg AME. Trial 2 included 10 experimental grower diets following a simplex lattice design consisting of 3 basal lots formulated to have the highest starch (45.4%), oil (10.2%), or AA density (120, 1.33% digestible Lys) and mixed in 4 equally spaced levels for each component (0, 0.33, 0.67, 1). These mixtures enabled varying densities of AA (80-120% of recommendation), starch:oil (4:1-20:1), and AME (2,940-3,450 kcal/kg). Bird and feeder weights were collected on d 0, 10, 24, and 35, and birds were exposed to an Eimeria challenge on d 11 or 12. In trial 2, excreta samples were collected for AME determination and carcasses were processed on d 36. Data were analyzed using ANOVA, t test, or regression. In Trial 1, BW gain and feed conversion were improved (P < 0.05) by increasing dietary AME. In Trial 2, birds receiving diets containing AA at 93 to 107% of recommendations and higher oil exhibited improved (P < 0.05) performance, but increased starch at the expense of oil reduced performance (P < 0.05). Relative breast and fat pad weights were not influenced by diet in Trial 2. We determined that broilers mildly challenged with Eimeria would exhibit highest BW gain when receiving diets containing 35.8% starch, 8.9% oil, and 101.3% of AA recommendations, which can be utilized by producers to maintain productivity under health-challenged conditions.
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Affiliation(s)
- J C Jespersen
- Department of Animal Sciences, University of Illinois, Urbana, IL, USA
| | | | - R Whelan
- Evonik Operations GmbH, Nutrition & Care, Hanau-Wolfgang, Germany
| | - A C Dilger
- Department of Animal Sciences, University of Illinois, Urbana, IL, USA
| | - M L Oelschlager
- Department of Animal Sciences, University of Illinois, Urbana, IL, USA
| | - K M Sommer
- Department of Animal Sciences, University of Illinois, Urbana, IL, USA
| | - B E Gorenz
- Department of Animal Sciences, University of Illinois, Urbana, IL, USA
| | - R R White
- Department of Animal and Poultry Sciences, Virginia Tech, Backsburg, VA, USA
| | - R N Dilger
- Department of Animal Sciences, University of Illinois, Urbana, IL, USA.
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Cho I, An SH, Yoon JH, Namgung N, Kong C. Growth performance and nitrogen excretion of broiler chickens fed low protein diets supplemented with crystalline amino acids. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2024; 66:145-155. [PMID: 38618035 PMCID: PMC11007463 DOI: 10.5187/jast.2023.e131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 11/13/2023] [Accepted: 11/27/2023] [Indexed: 04/16/2024]
Abstract
This study was conducted to determine the effects of amino acid (AA) supplementation in low-protein (LP) diets on growth performance and nitrogen (N) excretion. A total of 175 7-day-old Ross 308 male broilers, with a mean body weight (BW) of 165 g (standard deviation = 11.2 g), were grouped into five blocks by BW and allocated to seven treatments according to a randomized complete block design with five replicate cages at five birds per cage. Dietary treatments comprised a control diet containing 20.0% crude protein (CP) and six LP diets containing either 18.5% or 17.0% CP. These LP diets were supplemented with either no AA supplementation, indispensable AA, or both indispensable and dispensable AA (glutamic acid and glycine). Birds were fed experimental grower diets from day 7 to 21 and then commercial finisher diets until day 28. During the grower period (day 7 to 21), birds fed LP diets supplemented with indispensable AA exhibited greater (p < 0.05) BW, body weight gain (BWG), feed intake (FI), and gain-to-feed ratio (G:F) than birds fed LP diets without crystalline AA and were comparable to birds fed the control diet. During the finisher period (day 21 to 28), birds fed LP diets supplemented with indispensable AA showed greater (p < 0.05) BW than birds fed LP diets without crystalline AA, and their growth performance was comparable to birds fed the control diet. Throughout the overall period, supplementing indispensable AA in LP diets resulted in elevated (p < 0.05) BWG, FI, and G:F more than those of LP diets without crystalline AA and were comparable to those of the control diet. Supplementing indispensable AA in LP diets decreased amount and coefficient of N excretion as much as the control diet. Dispensable AA supplementation in LP diets did not influence growth performance and N excretion. In conclusion, supplementing indispensable AA in LP diets maintains growth performance and N excretion until the dietary CP lowers from 20.0% to 17.0% during the grower period. As long as dietary CP is above 17.0%, dispensable AA may not be deficient in LP diets during the grower period.
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Affiliation(s)
- Inho Cho
- Department of Animal Science and
Biotechnology, Kyungpook National University, Sangju 37224,
Korea
| | - Su Hyun An
- Department of Animal Science and
Biotechnology, Kyungpook National University, Sangju 37224,
Korea
- Research Institute for Innovative Animal
Science, Kyungpook National University, Sangju 37224,
Korea
| | - June Hyeok Yoon
- Department of Animal Science and
Biotechnology, Kyungpook National University, Sangju 37224,
Korea
| | - Nyun Namgung
- Livestock Science R&D Center, Easy
Holdings Co., Ltd., Seoul 06253, Korea
| | - Changsu Kong
- Department of Animal Science and
Biotechnology, Kyungpook National University, Sangju 37224,
Korea
- Research Institute for Innovative Animal
Science, Kyungpook National University, Sangju 37224,
Korea
- Department of Animal Science, Kyungpook
National University, Sangju 37224, Korea
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Flees JJ, Keel AJ, Gregg CR, Starkey CW, Starkey JD. Effects of light intensity and reduction of starter diet digestible lysine and metabolizable energy on broiler chicken growth performance, breast meat yield, and meat quality defects. Poult Sci 2024; 103:103222. [PMID: 37980732 PMCID: PMC10685017 DOI: 10.1016/j.psj.2023.103222] [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: 09/04/2023] [Revised: 10/16/2023] [Accepted: 10/18/2023] [Indexed: 11/21/2023] Open
Abstract
The etiology of Wooden Breast (WB) is unknown; therefore, it is difficult to produce broiler flocks with similar proportions of WB-affected and unaffected birds. Because WB has been detected as early as 15 d posthatch, the objective of this randomized complete block experiment with a 2 × 2 factorial treatment arrangement was to determine whether combining the effects of light intensity (LI) and early nutrient reduction strategies could reliably produce WB-affected and normal broilers to further investigate the physiological mechanisms underlying WB. On day of hatch, male, Ross 708 × Yield Plus broilers (n = 384; 16 birds per pen; 3 replicate blocks) were randomly allotted to floor pens in the same facility and exposed to either 2 (LOWLI) or 30 (HIGHLI) lux of light from d 0 to 35. Birds were fed either a commercial starter diet (CON) or the CON diet with a 10% reduction in both ME and digestible lysine (dLys; RED) from d 0 to 14 and then a common grower diet from d 15 to 35. Broiler growth performance, breast yield, and incidence and severity of WB and White Striping (WS) were assessed. Data were analyzed as a 2-way ANOVA with SAS PROC GLIMMIX and means separated at P < 0.05 with PDIFF. No interaction among LI and diet was observed (P > 0.05). Broilers reared with HIGHLI were heavier on d 35 and consumed more feed in all phases compared with broilers reared under LOWLI (P ≤ 0.0096). Broilers reared under LOWLI gained less BW from d 15 to 35 and d 0 to 35 compared with broilers reared under HIGHLI (P = 0.0073). Broilers fed the RED starter diet consumed more feed and had higher FCR from d 0 to 14 compared with broilers fed the CON diet (P ≤ 0.0012). In conclusion, combining reductions in LI and starter diet ME and dLys did not produce the hypothesized reductions in breast yield and incidence and severity of WB or WS.
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Affiliation(s)
- Joshua J Flees
- Department of Poultry Science, Auburn University, Auburn, AL, 36849, USA
| | - A Jacob Keel
- Department of Poultry Science, Auburn University, Auburn, AL, 36849, USA
| | - Caroline R Gregg
- Department of Poultry Science, Auburn University, Auburn, AL, 36849, USA
| | - Charles W Starkey
- Department of Poultry Science, Auburn University, Auburn, AL, 36849, USA
| | - Jessica D Starkey
- Department of Poultry Science, Auburn University, Auburn, AL, 36849, USA.
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Almuhayawi MS, Alruhaili MH, Gattan HS, Alharbi MT, Nagshabandi MK, Almehayawi MS, Jaouni SKA, Selim S, Alqahtani FS, El-Saadony MT, Alagawany M. Evaluation of antimicrobial effect of olive leaves powder and its role in improving the broiler productivity, carcass traits, blood metabolites, and caecal microbiota. Poult Sci 2023; 102:103054. [PMID: 37729677 PMCID: PMC10514443 DOI: 10.1016/j.psj.2023.103054] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/13/2023] [Accepted: 08/17/2023] [Indexed: 09/22/2023] Open
Abstract
The present study aims to evaluate the antimicrobial activity (in vitro study) of olive leaves powder (OLP) and its role in improving the broiler productivity, carcass criteria, blood indices, and antioxidant activity. A total of 270 one-day-old broiler chickens were distributed into 6 treatment groups as follows: the first group: basal diet without any supplementation, while the second, third, fourth, fifth, and sixth groups: basal diet supplemented with 50, 75, 100, 125, and 150 (µg/g), respectively. The in vitro study showed that the OLP has good antibacterial activity in the concentration-dependent matter; OLP 175 µg/mL inhibited the tested bacteria in the zones range of (0.8-4 cm), Klebsiella Pneumonaie (KP) was the most resistant bacteria to OLP concentration. The antioxidant activity of OLP increased with increasing the concentration of OLP compared to ascorbic acid, where OLP 175 µg/mL scavenged 91% of 2, 2-diphenyl-1-picrylhydrazyl (DPPH) free radicals compared to 93% scavenging activity of ascorbic acid. Broiler chickens fed diets with OLP had significantly (P < 0.05) higher body weight (BW) and body weight growth (BWG) than the control birds. The treatment with OLP significantly reduced the feed intake (FI) and feed conversion rate (FCR) when compared to control. Groups supplemented with OLP showed decreased abdominal fat deposition and a significant increase in the net carcass and breast muscle weight. OLP improved birds' blood parameters in comparison with control birds. All pathogenic bacterial numbers in caecal samples were decreased with elevating OLP levels, but the cecal Lactobacillus bacterial count was increased. In conclusion, OLP supplementation improved broiler chickens' performance, carcass traits, and blood parameters. Moreover, OLP improved birds' liver functions (reduced Alanine transaminase [ALT] and aspartate aminotransferase [AST] levels) in comparison with control. In addition, OLP promoted the antioxidant status, minimized the harmful microbial load, and increased beneficial bacterial count in the cecal contents of broilers.
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Affiliation(s)
- Mohammed S Almuhayawi
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, King AbdulAziz University, Jeddah 21589, Saudi Arabia.
| | - Mohammed H Alruhaili
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, King AbdulAziz University, Jeddah 21589, Saudi Arabia; Special Infectious Agents Unit, King Fahad Medical Research Center, King AbdulAziz University, Jeddah 21589, Saudi Arabia
| | - Hattan S Gattan
- Special Infectious Agents Unit, King Fahad Medical Research Center, King AbdulAziz University, Jeddah 21589, Saudi Arabia; Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohanned Talal Alharbi
- Department of Medical Microbiology and Parasitology, Faculty of Medicine, University of Jeddah, Jeddah 23218, Saudi Arabia
| | - Mohammed K Nagshabandi
- Department of Medical Microbiology and Parasitology, Faculty of Medicine, University of Jeddah, Jeddah 23218, Saudi Arabia
| | - Mutasem Saad Almehayawi
- Department of Emergency Medicine, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Soad K Al Jaouni
- Department of Hematology/Oncology, Yousef Abdulatif Jameel Scientific Chair of Prophetic Medicine Application, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka, Saudi Arabia
| | - Fatimah S Alqahtani
- Department of Biology, Faculty of Sciences, University of Bisha, Bisha 61922, Saudi Arabia
| | - Mohamed T El-Saadony
- Department of Agricultural Microbiology, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | - Mahmoud Alagawany
- Poultry Department, Agriculture Faculty, Zagazig University, Zagazig 44519, Egypt
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Li D, Wang J, Liu L, Li K, Xu Y, Ding X, Wang Y, Zhang Y, Xie L, Liang S, Wang Y, Zhan X. Effects of early post-hatch feeding on the growth performance, hormone secretion, intestinal morphology and intestinal microbiota structure in broilers. Poult Sci 2022; 101:102133. [PMID: 36174266 PMCID: PMC9520077 DOI: 10.1016/j.psj.2022.102133] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 07/07/2022] [Accepted: 08/01/2022] [Indexed: 10/31/2022] Open
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Flores-Santin J, Burggren WW. Beyond the Chicken: Alternative Avian Models for Developmental Physiological Research. Front Physiol 2021; 12:712633. [PMID: 34744759 PMCID: PMC8566884 DOI: 10.3389/fphys.2021.712633] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 09/13/2021] [Indexed: 12/23/2022] Open
Abstract
Biomedical research focusing on physiological, morphological, behavioral, and other aspects of development has long depended upon the chicken (Gallus gallus domesticus) as a key animal model that is presumed to be typical of birds and generally applicable to mammals. Yet, the modern chicken in its many forms is the result of artificial selection more intense than almost any other domesticated animal. A consequence of great variation in genotype and phenotype is that some breeds have inherent aberrant physiological and morphological traits that may show up relatively early in development (e.g., hypertension, hyperglycemia, and limb defects in the broiler chickens). While such traits can be useful as models of specific diseases, this high degree of specialization can color general experimental results and affect their translational value. Against this background, in this review we first consider the characteristics that make an animal model attractive for developmental research (e.g., accessibility, ease of rearing, size, fecundity, development rates, genetic variation, etc.). We then explore opportunities presented by the embryo to adult continuum of alternative bird models, including quail, ratites, songbirds, birds of prey, and corvids. We conclude by indicating that expanding developmental studies beyond the chicken model to include additional avian groups will both validate the chicken model as well as potentially identify even more suitable avian models for answering questions applicable to both basic biology and the human condition.
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Affiliation(s)
- Josele Flores-Santin
- Facultad de Ciencias, Biologia, Universidad Autónoma del Estado de Mexico, Toluca, Mexico
| | - Warren W Burggren
- Developmental Integrative Biology Research Group, Department of Biological Sciences, University of North Texas Denton, Denton, TX, United States
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Nutrition and Digestive Physiology of the Broiler Chick: State of the Art and Outlook. Animals (Basel) 2021; 11:ani11102795. [PMID: 34679817 PMCID: PMC8532940 DOI: 10.3390/ani11102795] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 09/23/2021] [Accepted: 09/23/2021] [Indexed: 11/24/2022] Open
Abstract
Simple Summary The first week after hatch is the most challenging period in the life of broilers. The digestive tract of the newly hatched chick is immature and must undergo dramatic changes before it can efficiently digest and absorb nutrients. The gut is the vital organ where nutrient digestion and absorption take place. Ontogenic changes that accompany improved digestion and absorption include increased secretion of digestive enzymes, increase in the gut absorptive surface area, and enhanced nutrient transporters. The obvious limiting factors are the secretion and activities of digestive enzymes, and the surface area for absorption. These limitations are overcome as the birds grow older, with concurrent improvements in nutrient utilization. In addition, substantial changes also take place in the physical and functional development of the immune system and intestinal microbial ecology. However, the focus of the current review was on nutrition-related challenges and nutritional approaches to assist the chick during this highly demanding period. Abstract Because the intestine is the primary nutrient supply organ, early development of digestive function in newly hatched chick will enable it to better utilize nutrients, grow efficiently, and achieve the genetic potential of contemporary broilers. Published data on the growth and digestive function of the gastrointestinal tract in neonatal poultry were reviewed. Several potential strategies to improve digestive tract growth and function in newly hatched chick are available and the options include breeder nutrition, in ovo feeding, early access to feed and water, special pre-starter diets, judicious use of feed additives, and early programming.
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Banaszak M, Biesek J, Adamski M. Wheat litter and feed with aluminosilicates for improved growth and meat quality in broiler chickens. PeerJ 2021; 9:e11918. [PMID: 34430084 PMCID: PMC8349159 DOI: 10.7717/peerj.11918] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 07/15/2021] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Natural minerals have many beneficial properties in poultry production, taking into account production as well as hygiene, health, safety, and quality of broiler meat. The aim of the study was to evaluate the effect of aluminosilicates in feed and litter on the growth performance and meat quality in chickens. Aluminosilicates, including halloysite and zeolite, could be a good alternative for synthetics, as a good solution for the environment in line with the current trends. METHODS Five-hundred male Ross 308 chickens were managed in 5 groups (10 replicates/group): LITTER: 1, control; 2, 0.95 kg/m2 of halloysite; 3, 0.475 kg/m2 of halloysite and 0.475 zeolite; 4, 0.95 kg/m2 of zeolite; 5, 0.25 kg/m2of halloysite and 0.7 kg/m2 of zeolite. FEED: groups 2-5, halloysite and zeolite addition (25:75 ratio; 0.5-2%). Growth performance (body weight and feed indicators), carcass, and meat quality (pH, colour, water-holding capacity, chemical composition of muscles) were recorded. The experimental setup, where the aluminosilicate additives were applied simultaneously, was proposed and approved by experts after pilot testing and on the basis of extensive literature where feed or litter additives were tested. RESULTS Body weight and its gain were higher in groups 3 and 4 than in 1, and feed intake was higher in 4. The weight of the carcass and some of its components, including muscles and skin with subcutaneous fat, were higher in 2-4. Water loss from leg muscles was lower in 4. The content of protein in muscles was significantly higher in 3. The addition of aluminosilicates in feed and litter had a positive effect on the growth performance and some traits of carcasses and meat quality, especially in group 3. Halloysite and zeolite can be used in feed and litter (especially 0.475 kg/m2 for each mineral in the wheat litter).
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Affiliation(s)
- Mirosław Banaszak
- Department of Animal Breeding and Nutrition, Faculty of Animal Breeding and Biology, UTP –University of Science and Technology in Bydgoszcz, Bydgoszcz, Poland
| | - Jakub Biesek
- Department of Animal Breeding and Nutrition, Faculty of Animal Breeding and Biology, UTP –University of Science and Technology in Bydgoszcz, Bydgoszcz, Poland
| | - Marek Adamski
- Department of Animal Breeding and Nutrition, Faculty of Animal Breeding and Biology, UTP –University of Science and Technology in Bydgoszcz, Bydgoszcz, Poland
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Li C, Barclay H, Roitberg B, Lalonde R. Ecology and Prediction of Compensatory Growth: From Theory to Application in Forestry. FRONTIERS IN PLANT SCIENCE 2021; 12:655417. [PMID: 34290721 PMCID: PMC8287248 DOI: 10.3389/fpls.2021.655417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 06/10/2021] [Indexed: 06/13/2023]
Abstract
Compensatory growth has been observed in forests, and it also appears as a common phenomenon in biology. Though it sometimes takes different names, the essential meanings are the same, describing the accelerated growth of organisms when recovering from a period of unfavorable conditions such as tissue damage at the individual level and partial mortality at the population level. Diverse patterns of compensatory growth have been reported in the literature, ranging from under-, to compensation-induced-equality, and to over-compensation. In this review and synthesis, we provide examples of analogous compensatory growth from different fields, clarify different meanings of it, summarize its current understanding and modeling efforts, and argue that it is possible to develop a state-dependent model under the conceptual framework of compensatory growth, aimed at explaining and predicting diverse observations according to different disturbances and environmental conditions. When properly applied, compensatory growth can benefit different industries and human society in various forms.
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Affiliation(s)
- Chao Li
- Canadian Wood Fiber Centre, Canadian Forest Service, Edmonton, AB, Canada
| | - Hugh Barclay
- Pacific Forestry Centre, Canadian Forest Service, Victoria, BC, Canada
| | - Bernard Roitberg
- Canadian Wood Fiber Centre, Canadian Forest Service, Edmonton, AB, Canada
- Department of Biological Sciences, Simon Fraser University, Burnaby, BC, Canada
| | - Robert Lalonde
- Department of Biology, University of British Columbia, Okanagan, BC, Canada
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El-Shater SN, Rizk H, Abdelrahman HA, Awad MA, Khalifa EF, Khalil KM. Embryonic thermal manipulation of Japanese quail: effects on embryonic development, hatchability, and post-hatch performance. Trop Anim Health Prod 2021; 53:263. [PMID: 33864132 DOI: 10.1007/s11250-021-02726-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 04/12/2021] [Indexed: 11/29/2022]
Abstract
Embryonic thermal manipulation led to several modifications in molecular, physiological, and biochemical parameters which affect pre- and post-hatch growth performance. The current study aims to elucidate the onset and long-term effects of intermittent thermal manipulations (TM) during two-time windows, early/late, of embryogenesis in Japanese quail (Coturnix japonica) on embryonic development, hatchability, muscle histogenesis, and post-hatch growth performance. Four groups were created; quail eggs in the control group were incubated at 37.7 °C and relative humidity (RH) 55%. Three thermally treated groups were incubated intermittently at 41 °C and 65% RH intermittently (3 h/day): early embryogenesis group (EE) was thermally treated during embryonic days (ED) 6-8, late embryogenesis group (LE) was thermally treated during (ED12-ED14), and early and late embryogenesis group (EL) was thermally manipulated in both time windows. Relative embryo weights in EL and EE were significantly lighter than those in LE and Ctrl groups. The hatched chicks were reared under optimal managemental conditions (three replicates per treatment). Average daily feed intake was recorded, and feed conversion ratio (FCR) was calculated. Histological and quantitative analyses of muscle fibers were performed. The results revealed that TM led to significant hypertrophy of quail breast muscle in (EE). Intermittent short-term (3-6 h) thermal manipulation (39-40 °C) protocols during early embryogenesis (ED6-ED8) could be recommended to enhance muscle mass growth and breast muscle yield in the Japanese quail.
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Affiliation(s)
- Saad N El-Shater
- Anatomy and Embryology Department, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Hamdy Rizk
- Anatomy and Embryology Department, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Hisham A Abdelrahman
- Department of Veterinary Hygiene and Management, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Mohamed A Awad
- Cytology and Histology Department, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Elsayed F Khalifa
- Anatomy and Embryology Department, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt
| | - Karim M Khalil
- Anatomy and Embryology Department, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt.
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Torrey S, Mohammadigheisar M, Nascimento Dos Santos M, Rothschild D, Dawson LC, Liu Z, Kiarie EG, Edwards AM, Mandell I, Karrow N, Tulpan D, Widowski TM. In pursuit of a better broiler: growth, efficiency, and mortality of 16 strains of broiler chickens. Poult Sci 2021; 100:100955. [PMID: 33518309 PMCID: PMC7936194 DOI: 10.1016/j.psj.2020.12.052] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 12/11/2020] [Accepted: 12/18/2020] [Indexed: 10/30/2022] Open
Abstract
To meet the growing consumer demand for chicken meat, the poultry industry has selected broiler chickens for increasing efficiency and breast yield. While this high productivity means affordable and consistent product, it has come at a cost to broiler welfare. There has been increasing advocacy and consumer pressure on primary breeders, producers, processors, and retailers to improve the welfare of the billions of chickens processed annually. Several small-scale studies have reported better welfare outcomes for slower-growing strains compared to fast-growing, conventional strains. However, these studies often housed birds with range access or used strains with vastly different growth rates. Additionally, there may be traits other than growth, such as body conformation, that influence welfare. As the global poultry industries consider the implications of using slower growing strains, there was a need for a comprehensive, multidisciplinary examination of broiler chickens with a wide range of genotypes differing in growth rate and other phenotypic traits. To meet this need, our team designed a study to benchmark data on conventional and slower-growing strains of broiler chickens reared in standardized laboratory conditions. Over a 2-year period, we studied 7,528 broilers from 16 different genetic strains. In this paper, we compare the growth, efficiency, and mortality of broilers to one of two target weights (TW): 2.1 kg (TW1) and 3.2 kg (TW2). We categorized strains by their growth rate to TW2 as conventional (CONV), fastest-slow strains (FAST), moderate-slow strains (MOD), and slowest-slow strains (SLOW). When incubated, hatched, housed, managed, and fed the same, the categories of strains differed in body weights, growth rates, feed intake, and feed efficiency. At 48 d of age, strains in the CONV category were 835 to 1,264 g heavier than strains in the other categories. By TW2, differences in body weights and feed intake resulted in a 22 to 43-point difference in feed conversion ratios. Categories of strains did not differ in their overall mortality rates.
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Affiliation(s)
- Stephanie Torrey
- Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada; Campbell Centre for the Study of Animal Welfare, University of Guelph, Guelph, Ontario, Canada.
| | | | - Midian Nascimento Dos Santos
- Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada; Campbell Centre for the Study of Animal Welfare, University of Guelph, Guelph, Ontario, Canada
| | - Daniel Rothschild
- Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada; Campbell Centre for the Study of Animal Welfare, University of Guelph, Guelph, Ontario, Canada
| | - Lauren C Dawson
- Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada; Campbell Centre for the Study of Animal Welfare, University of Guelph, Guelph, Ontario, Canada
| | - Zhenzhen Liu
- Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada; Campbell Centre for the Study of Animal Welfare, University of Guelph, Guelph, Ontario, Canada
| | - Elijah G Kiarie
- Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada
| | - A Michelle Edwards
- Ontario Agricultural College, University of Guelph, Guelph, Ontario, Canada
| | - Ira Mandell
- Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada
| | - Niel Karrow
- Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada
| | - Dan Tulpan
- Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada
| | - Tina M Widowski
- Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada; Campbell Centre for the Study of Animal Welfare, University of Guelph, Guelph, Ontario, Canada
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Taylor J, Sakkas P, Kyriazakis I. What are the limits to feed intake of broilers on bulky feeds? Poult Sci 2020; 100:100825. [PMID: 33516465 PMCID: PMC7936167 DOI: 10.1016/j.psj.2020.11.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 11/02/2020] [Accepted: 11/09/2020] [Indexed: 11/27/2022] Open
Abstract
The view that genetic selection for carcass yield has limited the size of the gastrointestinal tract (GIT) of modern broilers has sparked concerns that their capacity to cope with energy dilution or bulk is also limited. We investigated the capacity of male Ross 308 broilers to deal with increasing levels of bulk and aimed to identify a feed bulk dimension responsible for limiting feed intake (FI). About 528 day-old broilers were allocated to 48 pens and offered a common starter feed until day 8, and 1 of 7 feeds from day 8 to 36 of age: a basal control (B), which was diluted to 3 levels (15, 30, or 45%) with either oat hulls (OH) or sugar beet pulp (SBP). Feed intake was measured daily and birds were dissected for GIT measurements at day 15, 22, and 36. Feed intake increased in birds offered OH15 (135 g/d), OH30 (140 g/d), and SBP15 (138 g/d) compared with birds offered the B feed (106 g/d; SEM 2.4). By increasing FI, birds were able to compensate for the lower energy content of their feeds. The greatest increase in FI was seen on OH30: its energy content (2,273 kcal/kg) was 26% lower than the B feed (3,081 kcal/kg). There was evidence of adaptation on the bulky feeds, as during the last week only birds on SBP45 were limited in FI and performance. The relative weights of the GIT were greater in the SBP than OH series, suggesting that the former needed to accommodate a higher bulk intake. For the OH series the increase in the relative GIT weights was confined to the gizzard and small intestine; whereas for the SBP series, the increase was extended to proventriculus and large intestine. Because only SBP45 was limiting FI, we were unable to identify a bulk dimension to be used to predict FI. Our data reject the suggestion that modern broilers have a reduced ability to cope with reductions in feed energy content.
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Affiliation(s)
- James Taylor
- Agriculture, School of Natural and Environmental Sciences, Newcastle University, Newcastle on Tyne NE1 7RU, UK.
| | | | - Ilias Kyriazakis
- Institute for Global Food Security, Queen's University, Belfast BT7 1NN, United Kingdom
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Li C, Barclay H, Roitberg B, Lalonde R. Forest Productivity Enhancement and Compensatory Growth: A Review and Synthesis. FRONTIERS IN PLANT SCIENCE 2020; 11:575211. [PMID: 33384699 PMCID: PMC7770279 DOI: 10.3389/fpls.2020.575211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 09/11/2020] [Indexed: 06/12/2023]
Abstract
This review and synthesis article attempts to integrate observations from forestry to contemporary development in related biological research fields to explore the issue of forest productivity enhancement and its contributions in mitigating the wood supply shortage now facing the forest sector. Compensatory growth has been clearly demonstrated in the long-term precommercial thinning and fertilization trial near the Shawnigan Lake, British Columbia, Canada. This phenomenon appears similar to many observations from other biological fields. The concept of compensatory growth can be applied to forest productivity enhancement through overcompensation, by taking advantage of theories and methods developed in other compensatory growth research. Modeling technology provides an alternative approach in elucidating the mechanisms of overcompensation, which could reveal whether the Shawnigan Lake case could be generalized to other tree species and regions. A new mitigation strategy for dealing with issues related to wood supply shortage could be formed through searching for and creating conditions promoting overcompensation. A forest growth model that is state dependent could provide a way of investigating the effect of partial harvest on forest growth trajectories and stand dynamics. Results from such a study could provide cost-effective decision support tools to practitioners.
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Affiliation(s)
- Chao Li
- Canadian Wood Fibre Centre, Canadian Forest Service, Edmonton, AB, Canada
| | - Hugh Barclay
- Pacific Forestry Centre, Canadian Forest Service, Victoria, BC, Canada
| | - Bernard Roitberg
- Canadian Wood Fibre Centre, Canadian Forest Service, Edmonton, AB, Canada
- Department of Biological Sciences, Simon Fraser University, Burnaby, BC, Canada
| | - Robert Lalonde
- Department of Biology, University of British Columbia-Okanagan, Kelowna, BC, Canada
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Hadaeghi M, Avilés-Ramírez C, Seidavi A, Asadpour L, Núñez-Sánchez N, Martínez-Marín AL. Improvement in broiler performance by feeding a nutrient-dense diet after a mild feed restriction. REV COLOMB CIENC PEC 2020. [DOI: 10.17533/udea.rccp.v34n3a02] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background: The use of early nutrient-restriction programs in broilers can prevent complications such as increased body fat deposition and its consequences. However, feed restriction not always gives the expected results. Objective: To assess the effect of two levels of feed restriction followed by a re-alimentation period with five increasing nutrient levels on growth performance and immune response of broiler chickens. Methods: A total of 330 animals were used. The treatments were: 25 (T25) and 35% (T35) quantitative feed restriction during the starting period, and 0, 2.5, 5, 7.5, 10, and 15% increased energy and protein contents during the growing and finishing periods. Results: For all the T25 treatments, except for T25-0, feed intake (FI) and body weight gain (BWG) were higher, and feed conversion rate (FCR) was lower (p<0.05) compared to the control treatment. In that group, the response of FI and BWG to the increased nutrient density was mostly quadratic (p<0.001), whereas that of FCR was linear (p<0.001). The FI and BWG results were less homogeneous in the T35 treatments, but FCR was lower compared to the control treatment (p<0.05) in all of them. The FCR showed no differences (p>0.05) between treatments during the finishing period. Conclusion: Feeding a nutrient-dense diet after a period of mild feed restriction gives the best results, while increasing nutrient density after a more severe feed restriction does not improve productive results compared to a standard diet. Carcass traits and immune function were not affected by restriction level or nutrient density.
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Zhang B, Zhang X, Schilling MW, Tabler GT, Peebles ED, Zhai W. Effects of broiler genetic strain and dietary amino acid reduction on (part I) growth performance and internal organ development. Poult Sci 2020; 99:3266-3279. [PMID: 32475462 PMCID: PMC7597689 DOI: 10.1016/j.psj.2020.03.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 01/31/2020] [Accepted: 03/19/2020] [Indexed: 11/20/2022] Open
Abstract
Genetic selection in broilers has resulted in improved growth performance, meat yield, and feed conversion efficiency. However, consumers have become increasingly concerned about modern broiler welfare that is related to their rapid growth rate, which may be alleviated by nutrient dilution. This study was conducted to investigate the effects of dietary amino acid (AA) reduction on the growth performance and internal organ development of different genetic strains of broilers. A randomized completed block design with a factorial arrangement of 10 treatments (5 strains × 2 AA levels) was used. The 5 different strains of broilers were fed either a control diet, with digestible AA (lysine, total sulfur AA, and threonine) at the highest recommended levels for the 5 strains, or an AA-reduced diet, with the digestible AA being 20% lower than the control diet. Feed conversion ratio was increased by AA reduction in all 5 strains during day 0-14, 14-28, and 28-41 but was not affected from day 41-55. Body weight and feed intake responses to AA reduction varied in the different strains and ages of birds. Liver weight relative to BW on day 40, and weights of the duodenum and jejunum relative to BW on day 60 were increased by decreasing the dietary AA concentration. These results indicate that the birds had adjusted their organ growth and metabolism in response to increases in digestion, absorption, and utilization efficiency to accommodate a decrease in dietary AA content. Surprisingly, the cost of feed required to produce the same BW was decreased in 4 of 5 strains on both day 41 and 55, which was largely because of the lower price of the diets containing reduced AA levels and the later compensatory growth experienced by the birds fed AA-reduced diets. In the future, when dietary AA levels need to be adjusted to control growth rate and improve welfare status, the genetic strain, age of the birds, and targeted goals need to be taken into consideration.
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Affiliation(s)
- Bo Zhang
- Department of Poultry Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS 39762, USA
| | - Xue Zhang
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS 39762, USA
| | - Mark W Schilling
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS 39762, USA
| | - George T Tabler
- Department of Poultry Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS 39762, USA
| | - E David Peebles
- Department of Poultry Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS 39762, USA
| | - Wei Zhai
- Department of Poultry Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS 39762, USA.
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Tuell JR, Park JY, Wang W, Cooper B, Sobreira T, Cheng HW, Kim YHB. Effects of Photoperiod Regime on Meat Quality, Oxidative Stability, and Metabolites of Postmortem Broiler Fillet ( M. Pectoralis major) Muscles. Foods 2020; 9:E215. [PMID: 32092872 PMCID: PMC7074046 DOI: 10.3390/foods9020215] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 02/11/2020] [Accepted: 02/14/2020] [Indexed: 12/14/2022] Open
Abstract
The objective of this study was to evaluate the effects of photoperiod on meat quality, oxidative stability, and metabolites of broiler fillet (M. Pectoralis major) muscles. A total of 432 broilers was split among 4 photoperiod treatments [hours light(L):dark(D)]: 20L:4D, 18L:6D, 16L:8D, and 12L:12D. At 42 days, a total of 48 broilers (12 broilers/treatment) was randomly selected and harvested. At 1 day postmortem, fillet muscles were dissected and displayed for 7 days. No considerable impacts of photoperiods on general carcass and meat quality attributes, such as carcass weight, yield, pH, water-holding capacity, and shear force, were found (p > 0.05). However, color and oxidative stability were influenced by the photoperiod, where muscles from 20L:4D appeared lighter and more discolored, coupled with higher lipid oxidation (p < 0.05) and protein denaturation (p = 0.058) compared to 12L:12D. The UPLC-MS metabolomics identified that 20 metabolites were different between the 20L:4D and 12L:12D groups, and 15 were tentatively identified. In general, lower aromatic amino acids/dipeptides, and higher oxidized glutathione and guanine/methylated guanosine were observed in 20L:4D. These results suggest that a photoperiod would result in no considerable impact on initial meat quality, but extended photoperiods might negatively impact oxidative stability through an alteration of the muscle metabolites.
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Affiliation(s)
- Jacob R. Tuell
- Meat Science and Muscle Biology Laboratory, Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA; (J.R.T.); (J.-Y.P.)
| | - Jun-Young Park
- Meat Science and Muscle Biology Laboratory, Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA; (J.R.T.); (J.-Y.P.)
- Division of Applied Life Sciences (BK 21 Plus), Gyeongsang National University, Gyeongsangnam-do 52828, Korea
| | - Weichao Wang
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA;
| | - Bruce Cooper
- Bindley Bioscience Center, Purdue University, West Lafayette, IN 47907, USA; (B.C.); (T.S.)
| | - Tiago Sobreira
- Bindley Bioscience Center, Purdue University, West Lafayette, IN 47907, USA; (B.C.); (T.S.)
| | - Heng-Wei Cheng
- Livestock Behavior Research Unit, USDA-Agricultural Research Service, West Lafayette, IN 47907, USA;
| | - Yuan H. Brad Kim
- Meat Science and Muscle Biology Laboratory, Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA; (J.R.T.); (J.-Y.P.)
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18
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Middendorf L, Radko D, Düngelhoef K, Sieverding E, Windhaus H, Mischok D, Visscher C. Amino acid pattern in the liver and blood of fattening turkeys suffering from hepatic lipidosis. Poult Sci 2019; 98:3950-3962. [PMID: 30941423 PMCID: PMC6698191 DOI: 10.3382/ps/pez131] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 03/06/2019] [Indexed: 12/16/2022] Open
Abstract
Hepatic lipidosis (HL) is a well-known disease in fattening and in parent turkey flocks. Among others, dietary effects like (a lack of) essential amino acids (AA) as lipotrophic factors (e.g., methionine) have been considered as potentially predispositing for HL. Several studies have reported abnormal AA profiles in hepatic diseases of humans and other livestock. The ratio of branched-chain amino acids (BCAA) to aromatic amino acids (AAA) in plasma is used to predict hepatic cirrhosis. In this study, the state of supply of AA was investigated by comparing non-affected (NA) animals and those affected by HL. The AA pattern in the liver and blood can provide potential indications of pathogenesis of HL. In cooperation with German poultry veterinarians, 3 cases of HL on 3 different fattening turkey farms were visited (13/14 wk old, “B.U.T. Big 6” and “TP7”). Overall, 73 birds were examined, of which 42 birds suffered from HL and 31 were not affected. Feeding samples of the respective actual feed were taken and analyzed. The selection of animals was carried out (NA randomly) by clinical signs such as apathy and dyspnea and the diagnosis was made at necropsy, which could be confirmed by crude fat content in liver tissue (HL: 309, NA: 155). In liver tissue, the CP and AA contents were lower among animals with HL than among NA (P < 0.05). In blood samples, the sum of AA, ammonia, and urea was more than 3 times higher among animals with HL (431 mg/dL serum) than among NA (114 mg/dL serum; P < 0.01). The ratio of BCAA to AAA was also significantly different between the groups (HL: 0.85, NA: 1.42; P < 0.05). In the case of HL, entire herds were not affected and the “non-affected” ones were comparable with healthy slaughtered animals. There seems to be a clear change in protein and AA metabolism of HL animals, which could lead to an optimization in feeding practice in repeated cases of HL.
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Affiliation(s)
- L Middendorf
- Institute for Animal Nutrition, University of Veterinary Medicine Hannover, Foundation, D-30173 Hannover, Germany
| | - D Radko
- Elanco Animal Health GmbH, D-61352 Bad Homburg, Germany
| | - K Düngelhoef
- Tierarztpraxis an der Güterstraße, D-46499 Hamminkeln, Germany
| | - E Sieverding
- Praxis am Bergweg, D-49393 Lohne (Oldenburg), Germany
| | - H Windhaus
- Tierärztliche Gemeinschaftspraxis Dres, Windhaus & Hemme, D-49377 Vechta, Germany
| | - D Mischok
- Agro-Vet-Consult, D-49377 Vechta, Germany
| | - C Visscher
- Institute for Animal Nutrition, University of Veterinary Medicine Hannover, Foundation, D-30173 Hannover, Germany
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20
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21
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Hinz K, Stracke J, Schättler JK, Kemper N, Spindler B. Effects of Enriched Charcoal as Permanent 0.2% Feed-Additive in Standard and Low-Protein Diets of Male Fattening Turkeys: An On-Farm Study. Animals (Basel) 2019; 9:E541. [PMID: 31398925 PMCID: PMC6721224 DOI: 10.3390/ani9080541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 07/31/2019] [Accepted: 08/04/2019] [Indexed: 11/21/2022] Open
Abstract
Wet litter is the most important cause of footpad dermatitis in poultry, this in turn being a highly relevant animal-related welfare indicator. This field study was subdivided into two experiments. In Experiment 1, the standard diet was supplemented by 0.2% enriched charcoal, being a non-specific absorber and therefore might be promising in reducing faecal moisture. In Experiment 2, the experimental group received a reduced crude protein diet during weeks 6-13, combined with a 0.2% enriched charcoal supplementation. The trials were each conducted with two batches on three farms under on-farm conditions. The animals were observed at 6, 10, 14 and 18 weeks of age to collect data on body weight and different health parameters. The mortality and litter samples were analysed after slaughtering. In Experiment 1, performance and health were not affected despite higher dry matter content of the litter. In Experiment 2, the weight of birds receiving the protein-reduced diet was decreased significantly throughout the experiment. However, the slaughter weight did not differ. The mortality was reduced by 0.5% in the experimental group. Therefore, it was concluded that 0.2% of enriched charcoal is not a valuable feed-additive regarding animal health, while temporary protein reduction might have positive effects.
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Affiliation(s)
- Katharina Hinz
- Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15 (Building 116), D-30173 Hannover, Germany.
| | - Jenny Stracke
- Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15 (Building 116), D-30173 Hannover, Germany
| | - Jule Katrin Schättler
- Chamber of Agriculture Lower Saxony, Division Agriculture, Mars-la-Tour-Str. 6, D-26121 Oldenburg, Germany
| | - Nicole Kemper
- Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15 (Building 116), D-30173 Hannover, Germany
| | - Birgit Spindler
- Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15 (Building 116), D-30173 Hannover, Germany
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Dierick E, Hirvonen OP, Haesebrouck F, Ducatelle R, Van Immerseel F, Goossens E. Rapid growth predisposes broilers to necrotic enteritis. Avian Pathol 2019; 48:416-422. [PMID: 31043060 DOI: 10.1080/03079457.2019.1614147] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Over the past 50 years, intentional genetic selection within the broiler industry has led to major improvements in both body weight gain (BWG) and feed conversion efficiency. Next to its economic advantages, enhancing BWG can increase the risk of metabolic and skeletal disorders. The aim of this study was to examine whether higher BWG is a predisposing factor for broiler necrotic enteritis. In this study, 300 broilers were challenged with Clostridium perfringens using a well-established, previously described challenge model. It was found that birds with higher body weight (BW) and BWG before challenge were predisposed to develop more severe necrotic enteritis lesions. After challenge, the average BWG of the birds developing mild to severe lesions dropped significantly, negatively affecting bird welfare and performance. These results show a significant interplay between BWG and the development of necrotic enteritis lesions. This raises the question whether there is a limit to broiler performance with respect to maintaining intestinal health, and whether decreasing BWG (at certain stages of the growth cycle) can be part of a plan to prevent intestinal pathology. RESEARCH HIGHLIGHTS Higher body weight is a predisposing factor to necrotic enteritis in broilers.
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Affiliation(s)
- E Dierick
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University , Merelbeke , Belgium
| | - O P Hirvonen
- Faculty of Sport and Health Sciences, University of Jyväskylä , Jyväskylä , Finland
| | - F Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University , Merelbeke , Belgium
| | - R Ducatelle
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University , Merelbeke , Belgium
| | - F Van Immerseel
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University , Merelbeke , Belgium
| | - E Goossens
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University , Merelbeke , Belgium
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Chiroque G, Vásquez G, Vásquez E, Vásquez E, Más D, Betancur C, Ruiz C, Botello A, Martínez Y. Growth Performance, Carcass Traits and Breast Meat Fatty Acids Profile of Helmeted Guinea Fowls (Numida meleagris) Fed Increasing Level of Linseed (Linum usitatissimum) and Pumpkin Seed (Cucurbita moschata) Meals. BRAZILIAN JOURNAL OF POULTRY SCIENCE 2018. [DOI: 10.1590/1806-9061-2018-0760] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- G Chiroque
- Universidad Nacional Pedro Ruiz Gallo, Perú
| | - G Vásquez
- Universidad Nacional Pedro Ruiz Gallo, Perú
| | - E Vásquez
- Universidad Nacional Pedro Ruiz Gallo, Perú
| | - E Vásquez
- Universidad Nacional Pedro Ruiz Gallo, Perú
| | - D Más
- Universidad Autónoma de Querétaro, Mexico
| | | | | | - A Botello
- Universidad Técnica “Luis Vargas Torres” de Esmeraldas, Ecuador
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Hollemans M, de Vries S, Lammers A, Clouard C. Effects of early nutrition and transport of 1-day-old chickens on production performance and fear response. Poult Sci 2018; 97:2534-2542. [DOI: 10.3382/ps/pey106] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 03/15/2018] [Indexed: 11/20/2022] Open
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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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26
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Wang G, Kim WK, Cline MA, Gilbert ER. Factors affecting adipose tissue development in chickens: A review. Poult Sci 2018; 96:3687-3699. [PMID: 28938790 DOI: 10.3382/ps/pex184] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 06/13/2017] [Indexed: 12/12/2022] Open
Abstract
The intense genetic selection for rapid growth in broilers has resulted in an increase in voluntary feed intake and growth rate, accompanied by increased fat deposition in adipose tissue depots throughout the body. Adipose tissue expansion is a result of the formation of adipocytes (several processes collectively referred to as adipogenesis) and cellular accumulation of triacylglycerols inside lipid droplets. In mammals, different anatomical depots are metabolically distinct. The molecular and cellular mechanisms underlying adipose tissue development have been characterized in mammalian models, whereas information in avian species is scarce. The purpose of this review is to describe factors regulating adipogenesis in chickens, with an emphasis on dietary factors and the broiler. Results from many studies have demonstrated effects of dietary nutrient composition on adipose tissue development and lipid metabolism. Transcription factors, such as peroxisome proliferator-activated receptor γ, CCAAT/enhancer-binding proteins α and β, and sterol regulatory element binding proteins orchestrate a series of cellular events that lead to an increase in activity of fatty acid transport proteins and enzymes that are responsible for triacylglycerol synthesis. Understanding the mechanisms underlying adipose tissue development may provide a practical strategy to affect body composition of the commercial broiler while providing insights on diets that maximize conversion into muscle rather than fat and affect depot-dependent deposition of lipids. Because of the propensity to overeat and become obese, the broiler chicken also represents an attractive biomedical model for eating disorders and obesity in humans.
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Affiliation(s)
- Guoqing Wang
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, Virginia 24061
| | - Woo Kyun Kim
- Department of Poultry Science, University of Georgia, Athens, GA 30602
| | - Mark A Cline
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, Virginia 24061
| | - Elizabeth R Gilbert
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, Virginia 24061
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Baxter MFA, Latorre JD, Koltes DA, Dridi S, Greene ES, Bickler SW, Kim JH, Merino-Guzman R, Hernandez-Velasco X, Anthony NB, Bottje WG, Hargis BM, Tellez G. Assessment of a Nutritional Rehabilitation Model in Two Modern Broilers and Their Jungle Fowl Ancestor: A Model for Better Understanding Childhood Undernutrition. Front Nutr 2018; 5:18. [PMID: 29629373 PMCID: PMC5876931 DOI: 10.3389/fnut.2018.00018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 03/08/2018] [Indexed: 01/28/2023] Open
Abstract
This article is the first in a series of manuscripts to evaluate nutritional rehabilitation in chickens as a model to study interventions in children malnutrition (Part 1: Performance, Bone Mineralization, and Intestinal Morphometric Analysis). Inclusion of rye in poultry diets induces a nutritional deficit that leads to increased bacterial translocation, intestinal viscosity, and decreased bone mineralization. However, it is unclear the effect of diet on developmental stage or genetic strain. Therefore, the objective was to determine the effects of a rye diet during either the early or late phase of development on performance, bone mineralization, and intestinal morphology across three diverse genetic backgrounds. Modern 2015 (Cobb 500) broiler chicken, 1995 Cobb broiler chicken, and the Giant Jungle Fowl were randomly allocated into four different dietary treatments. Dietary treatments were (1) a control corn-based diet throughout the trial (corn-corn); (2) an early phase malnutrition diet where chicks received a rye-based diet for 10 days, and then switched to the control diet (rye-corn); (3) a malnutrition rye-diet that was fed throughout the trial (rye-rye); and (4) a late phase malnutrition diet where chicks received the control diet for 10 days, and then switched to the rye diet for the last phase (corn-rye). At 10 days of age, chicks were weighed and diets were switched in groups 2 and 4. At day 20 of age, all chickens were weighed and euthanized to collect bone and intestinal samples. Body weight, weight gain, and bone mineralization were different across diet, genetic line, age and all two- and three-way interactions (P < 0.05). Overall, Jungle Fowl were the most tolerant to a rye-based diet, and both the modern and 1995 broilers were significantly affected by the high rye-based diet. However, the 1995 broilers consuming the rye-based diet appeared to experience more permanent effects when compared with the modern broiler. The results of this study suggest that chickens have a great potential as a nutritional rehabilitation model in human trials. The 1995 broilers line was an intermediate genetic line between the fast growing modern line and the non-selected Jungle Fowl line, suggesting that it would be the most appropriate model to study for future studies.
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Affiliation(s)
- Mikayla F. A. Baxter
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Juan D. Latorre
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Dawn A. Koltes
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
- Department of Animal Science, Iowa State University, Ames, IA, United States
| | - Sami Dridi
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Elizabeth S. Greene
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Stephen W. Bickler
- Department of Pediatrics, University of California, San Diego, San Diego, CA, United States
| | - Jae H. Kim
- Division Neonatology, University of California, San Diego, San Diego, CA, United States
| | - Ruben Merino-Guzman
- College of Veterinary Medicine, National Autonomous University of Mexico, Ciudad de Mexico, Mexico
| | | | - Nicholas B. Anthony
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Walter G. Bottje
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Billy M. Hargis
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
| | - Guillermo Tellez
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, United States
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Jariyahatthakij P, Chomtee B, Poeikhampha T, Loongyai W, Bunchasak C. Methionine supplementation of low-protein diet and subsequent feeding of low-energy diet on the performance and blood chemical profile of broiler chickens. ANIMAL PRODUCTION SCIENCE 2018. [DOI: 10.1071/an16258] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The effects were investigated of supplementing methionine (Met) in a low-crude protein diet (Low-CP+Met) during Days 11–24 post-hatch and subsequent feeding with a low-metabolisable energy diet (Low-ME; –0.31 MJ/kg) during Days 25–42 on the productive performance and blood chemistry profile of broiler chickens. The 1600 broiler chicks were divided into four groups and fed as follows: (1) Control diet; (2) Low-CP (Met deficiency) diet during Days 11–24, then re-feeding with conventional diet; (3) Low-CP+Met diet during days 11–24, then re-feeding with conventional diet; and (4) Low-CP+Met+Low-ME diet (Low-CP+Met diet during Days 11–24, then re-feeding with Low-ME diet). During Days 11–24, the growth performance of the Control group was better than the other groups (P < 0.01), although the Low-CP+Met diet improved bodyweight, feed conversion ratio and improved the protein conversion ratio compare to the Low-CP group (P < 0.01). During the re-feeding phase (Days 25–42), reducing the dietary energy resulted in better growth performance and a better protein conversion ratio and energy conversion ratio than in the Control group (P < 0.05). Triglyceride, very low-density lipoprotein, low-density lipoprotein-cholesterol and total cholesterol in serum were higher, and non-esterified fatty acid was lower in the Control group than those of the Low-CP+Met+Low-ME group (P < 0.05). In conclusion, reducing dietary protein with balanced amino acids during the grower period and subsequent feeding with a low-energy diet promoted productive performance, improved protein utilisation and reduced fat accumulation via increasing lipolysis and/or disruption of the triglyceride transportation in broiler chickens.
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Wang G, McConn BR, Liu D, Cline MA, Gilbert ER. The effects of dietary macronutrient composition on lipid metabolism-associated factor gene expression in the adipose tissue of chickens are influenced by fasting and refeeding. BMC OBESITY 2017; 4:14. [PMID: 28496985 PMCID: PMC5424285 DOI: 10.1186/s40608-017-0150-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 03/01/2017] [Indexed: 12/27/2022]
Abstract
Background Broiler chickens are compulsive feeders that become obese as juveniles and are thus a unique model for metabolic disorders in humans. However, little is known about the relationship between dietary composition, fasting and refeeding and adipose tissue physiology in chicks. Our objective was to determine how dietary macronutrient composition and fasting and refeeding affect chick adipose physiology during the early post-hatch period. Methods Chicks were fed one of three isocaloric diets after hatch: high-carbohydrate (HC; control), high-fat (HF; 30% of ME from soybean oil) or high-protein (HP; 25% vs. 22% crude protein). At 4 days post-hatch, chicks were fed (continuous ad libitum access to food), fasted (3 h food withdrawal), or refed (fasted for 3 h and refed for 1 h). Subcutaneous, clavicular, and abdominal adipose tissue was collected for histological analysis and to measure gene expression, and plasma to measure non-esterified fatty acid (NEFA) concentrations (n = 6–10 per group). Results Adipose tissue weights were reduced in chicks that were fed the HP diet and adipocyte diameter was greater in the adipose tissue of chicks that ate the HF diet. Consumption of diets differing in protein and fat content also affected gene expression; mRNAs encoding fatty acid binding protein 4 and a lipolytic enzyme, monoglyceride lipase, were greater in chicks fed the HC and HF than HP diet in all three adipose tissue depots. Fasting influenced gene expression in a depot-dependent manner, where most fasting and refeeding-induced changes were observed in the clavicular fat of chicks that consumed the HC diet. Fasting increased plasma NEFA concentrations in chicks fed the HC and HP diets. Conclusions The decreased adipose tissue deposition in chicks fed the HP diet is likely explained by decreased rates of adipogenesis. Consumption of the HF diet was associated with greater adipose tissue deposition and larger adipocytes, likely as a result of greater rates of adipocyte hypertrophy. The depot-dependent effects of diet and fasting on gene expression may help explain mechanisms underlying metabolic distinctions among subcutaneous and visceral fat depots in humans.
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Affiliation(s)
- Guoqing Wang
- Department of Animal and Poultry Sciences Virginia Polytechnic Institute and State University, Blacksburg, VA 24061 USA
| | - Betty R McConn
- Department of Animal and Poultry Sciences Virginia Polytechnic Institute and State University, Blacksburg, VA 24061 USA
| | - Dongmin Liu
- Department of Human Nutrition, Foods and Exercise Virginia Polytechnic Institute and State University, Blacksburg, VA 24061 USA
| | - Mark A Cline
- Department of Animal and Poultry Sciences Virginia Polytechnic Institute and State University, Blacksburg, VA 24061 USA
| | - Elizabeth R Gilbert
- Department of Animal and Poultry Sciences Virginia Polytechnic Institute and State University, Blacksburg, VA 24061 USA
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Rahimi S, Seidavi A, Sahraei M, Blanco FP, Schiavone A, Martínez Marín AL. Effects of Feed Restriction and Diet Nutrient Density During Re-Alimentation on Growth Performance, Carcass Traits, Organ Weight, Blood Parameters and the Immune Response of Broilers. ITALIAN JOURNAL OF ANIMAL SCIENCE 2016. [DOI: 10.4081/ijas.2015.4037] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Solmaz Rahimi
- Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Alireza Seidavi
- Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Mahmood Sahraei
- Ardabil Research Center of Agriculture and Natural Resources, Ardabil, Iran
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The effects of a novel synthetic emulsifier product on growth performance of chickens for fattening and weaned piglets. Animal 2016; 10:592-7. [DOI: 10.1017/s1751731115002189] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Ebrahimi H, Shariatmadari F, Karimi Torshizi M. Dietary supplementation and in ovo injection of 1α-OHD3 in a low-calcium and low-phosphorous diets for broilers. JOURNAL OF APPLIED ANIMAL RESEARCH 2015. [DOI: 10.1080/09712119.2015.1021803] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ghasemi HA, Ghasemi R, Torki M. Periodic usage of low-protein methionine-fortified diets in broiler chickens under high ambient temperature conditions: effects on performance, slaughter traits, leukocyte profiles and antibody response. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2014; 58:1405-1414. [PMID: 24122339 DOI: 10.1007/s00484-013-0741-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 08/23/2013] [Accepted: 09/12/2013] [Indexed: 06/02/2023]
Abstract
This study was performed to evaluate the effects of adding methionine supplements to low-protein diets and subsequent re-feeding with a normal diet on the productive performance, slaughter parameters, leukocyte profiles and antibody response in broiler chickens reared under heat stress conditions.During the whole experimental period (6-49 days), the birds were raised in battery cages located in high ambient temperature in an open-sided housing system. A total of 360 6-day-old male chickens were divided into six treatments in six replicates with ten chicks each. Six isoenergetic diets, with similar total sulfur amino acids levels, were formulated to provide 100 and 100 (control), 85 and 100 (85S), 70 and 100 (70S), 85 and 85 (85SG), 70 and 85 (70S85G), and 70 and 70% (70SG) of National Research Council recommended levels for crude protein during the starter (6-21 day) and grower (22-42 day) periods, respectively. Subsequently, all groups received a diet containing the same nutrients during the finisher period (43-49 day). The results showed that, under heat stress conditions, average daily gain and feed conversion ratio and performance index from day 6 to 49, breast and thigh yields and antibody titer against Newcastle disease in the birds fed diets 85S, 70S and 85SG were similar to those of birds fed control diet, whereas feeding diets 70S85G and 70SG significantly decreased the values of above-mentioned parameters. Additionally, diets 85S, 70S and 85SG significantly decreased mortality rate and heterophil:lymphocyte ratio compared with the control diet. In conclusion, the results indicate that supplementation of methionine to diets 85S, 70S and 85SG, and then re-feeding with a conventional diet is an effective tool to maintain productive performance and to improve health indices and heat resistance in broilers under high ambient temperature conditions.
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Wang X, Peebles ED, Zhai W. Effects of protein source and nutrient density in the diets of male broilers from 8 to 21 days of age on their subsequent growth, blood constituents, and carcass compositions. Poult Sci 2014; 93:1463-74. [PMID: 24879696 DOI: 10.3382/ps.2013-03838] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The effects of protein source and amino acid (AA) and AME levels in the diets of male broilers from 8 to 21 d of age on subsequent growth and blood and carcass traits were investigated in the current study. Fourteen Ross × Ross 708 male broiler chicks were randomly allocated to each of 80 floor pens arranged in a randomized complete block design. Each diet contained 1 of 2 dietary protein sources (high inclusion of distillers dried grains with solubles or high inclusion of meat and bone meal), 1 of 2 AA densities (moderate or 10% higher), and 1 of 2 AME densities (2,998 or 3,100 kcal/kg). Experimental diets were fed from 8 to 21 d of age, and common diets from 1 to 7 and 21 to 55 d of age. The higher AME density in high inclusion of meat and bone meal diets increased serum triglyceride and cholesterol levels on d 20. The dietary inclusion of high inclusion of distillers dried grains with solubles or lower levels of AA increased high-density lipoprotein cholesterol on d 20. Feeding the high-AA-density diet decreased feed intake without affecting BW gain, which resulted in a lower feed conversion ratio (FCR). A high-AME-density diet lowered feed intake but increased BW gain, which resulted in a lower FCR from 8 to 21 d of age. Feed intake, BW gain, FCR from 21 to 54 d of age, and carcass weight on 42 and 55 d of age were not affected by treatments from 8 to 21 d of age. However, early dietary manipulation from 8 to 21 d of age affected fat and meat yield at 42 and 55 d of age. Moreover, a high-AME diet decreased feed cost per carcass weight gain from 8 to 55 d of age. In conclusion, high AA or AME densities during the grower phase, from d 8 to 21 of age, may improve growth during the grower feeding phase, but may also affect meat yield during the latter grow-out phases. Furthermore, high-AME diets from 8 to 21 d of age may save on feed costs for meat production.
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Affiliation(s)
- X Wang
- Department of Poultry Science, Mississippi State University, Mississippi State 39762
| | - E D Peebles
- Department of Poultry Science, Mississippi State University, Mississippi State 39762
| | - W Zhai
- Department of Poultry Science, Mississippi State University, Mississippi State 39762
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Association between Digesta pH, Body Weight, and Nutrient Utilization in Chickens of Different Body Weights and at Different Ages. J Poult Sci 2014. [DOI: 10.2141/jpsa.0120151] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Pozzo L, Salamano G, Mellia E, Gennero MS, Doglione L, Cavallarin L, Tarantola M, Forneris G, Schiavone A. Feeding a diet contaminated with ochratoxin A for chickens at the maximum level recommended by the EU for poultry feeds (0.1 mg/kg). 1. Effects on growth and slaughter performance, haematological and serum traits. J Anim Physiol Anim Nutr (Berl) 2013; 97 Suppl 1:13-22. [PMID: 23639013 DOI: 10.1111/jpn.12050] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Accepted: 12/15/2012] [Indexed: 11/29/2022]
Abstract
The European Commission Recommendation 2006/576/EC, suggests that the maximum level of Ochratoxin A (OTA) in poultry feeds should be set at 0.1 mg OTA/kg. Thirty-six one-day-old male Hubburd broiler chickens were divided into two groups, a Control (basal diet) and an Ochratoxin A (basal diet + 0.1 mg OTA/kg) group. The growth and slaughter performance traits were recorded. The liver, spleen, bursa of Fabricius and thymus weights were measured. The erythrocyte and leukocyte numbers were assayed in blood samples, and the heterophils to lymphocytes (H/L) ratio was determined. Alpha-1-acid glycoprotein (AGP), lysozyme, the total protein and the electrophoretic pattern were evaluated in serum samples. Liver enzymes (alanino aminotransferase, ALT and aspartate aminotransferase, AST) and kidney function parameters (uric acid and creatinine) were quantified. The results revealed that feeding a 0.1 mg OTA/kg contaminated diet to chicks caused a decrease in the absolute thymus weight (p < 0.05) and a lower total protein (p < 0.01), albumin (p < 0.01), alpha (p < 0.05), beta (p = 0.001) and gamma (p = 0.001) globulins serum concentration in the Ochratoxin A group. Moreover, the albumin-to-globulin (A/G) ratio of the OTA-treated animals resulted to be higher (p < 0.05). Feeding broiler chickens, a diet contaminated with the maximum level admitted by the European Commission Recommendation (0.1 mg OTA/kg), did not affect the animal performance, slaughter traits, organ weights, haematological parameters, liver enzyme or renal function parameters concentrations but had an overall immunosuppressant effect, with reduction in the thymus weight and of the total serum protein, albumin, alpha, beta and gamma globulins concentration.
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Affiliation(s)
- L Pozzo
- Dipartimento di Scienze Veterinarie, Università di Torino, Grugliasco, Turin, Italy
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Butzen F, Ribeiro A, Vieira M, Kessler A, Dadalt J, Della M. Early feed restriction in broilers. I–Performance, body fraction weights, and meat quality. J APPL POULTRY RES 2013. [DOI: 10.3382/japr.2012-00639] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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39
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Hou C, Bolt KM, Bergman A. A general model for ontogenetic growth under food restriction. Proc Biol Sci 2011; 278:2881-90. [PMID: 21345868 PMCID: PMC3151715 DOI: 10.1098/rspb.2011.0047] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2011] [Accepted: 01/31/2011] [Indexed: 01/14/2023] Open
Abstract
Food restriction (FR) retards animals' growth. Understanding the underlying mechanisms of this phenomenon is important to conceptual problems in life-history theory, as well as to applied problems in animal husbandry and biomedicine. Despite a considerable amount of empirical data published since the 1930s, there is no relevant general theoretical framework that predicts how animals vary their energy budgets and life-history traits under FR. In this paper, we develop such a general quantitative model based on fundamental principles of metabolic energy allocation during ontogeny. This model predicts growth curves under varying conditions of FR, such as the compensatory growth, different age at which FR begins, its degree and its duration. Our model gives a quantitative explanation for the counterintuitive phenomenon that under FR, lower body temperature and lower metabolism lead to faster growth and larger adult size. This model also predicts that the animals experiencing FR reach the same fraction of their adult mass at the same age as their ad libitum counterparts. All predictions are well supported by empirical data from mammals and birds of varying body size, under different conditions of FR.
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Affiliation(s)
| | | | - Aviv Bergman
- Department of Systems and Computational Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
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Mirzaei H, Verbyla A, Pitchford W. Prediction model of a joint analysis of beef growth and carcass quality traits. GENETICS AND MOLECULAR RESEARCH 2011; 10:448-58. [DOI: 10.4238/vol10-1gmr1109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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41
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Effects of Methionine Supplementation in Low-Protein Diets and Subsequent Re-feeding on Growth Performance, Liver and Serum Lipid Profile, Body Composition and Carcass Quality of Broiler Chickens at 42 Days of Age. J Poult Sci 2011. [DOI: 10.2141/jpsa.010064] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Susbilla JP, Tarvid I, Gow CB, Frankel TL. Quantitative feed restriction or meal-feeding of broiler chicks alter functional development of enzymes for protein digestion. Br Poult Sci 2010; 44:698-709. [PMID: 14965090 DOI: 10.1080/00071660310001643679] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
1. Two experiments were performed on broiler chicks to determine the effect of either quantitative feed restriction (QFR) from 5 to 11 d of age or meal-feeding (MF) from d 5 to 17 on development of activity of enzymes associated with protein digestion. 2. Proteolytic activity of the proventriculus was reduced by QFR but unaffected by MF. 3. General proteolytic and carboxypeptidase A activities of the pancreas were reduced by QFR and MF. 4. Amino- and dipeptidase activities of the small intestine were increased by QFR. Dipeptidase activity was unaffected by MF. 5. Nitrogen retention of QFR chicks was lower immediately following feed restriction but not in the 2 weeks following return to ad libitum access to feed. 6. Feeding regimen alters functional development of the enzymes of protein digestion and may therefore influence growth rate of broilers.
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Affiliation(s)
- J P Susbilla
- Department of Agricultural Sciences, La Trobe University, Bundoora, Victoria, Australia.
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Ozkan S, Takma C, Yahav S, Sögüt B, Türkmut L, Erturun H, Cahaner A. The effects of feed restriction and ambient temperature on growth and ascites mortality of broilers reared at high altitude. Poult Sci 2010; 89:974-85. [PMID: 20371850 DOI: 10.3382/ps.2009-00293] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The development of ascites was investigated in broilers at low versus high altitudes, cold versus normal ambient temperatures (AT), and 3 feeding regimens. One-day-old chicks obtained at sea level were reared at high altitude (highA; 1,720 m; n = 576) with 2 AT treatments, low AT from 3 wk onward at highA (highA/cold) and normal AT from 3 wk onward at highA (highA/norm), or at sea level (normal AT from 3 wk onward at low altitude, lowA/norm; n = 540). Under highA/cold, AT ranged between 16 to 17 degrees C in the fourth week, 17 to 19 degrees C in the fifth week, and 19 to 21 degrees C thereafter. Under highA/norm and lowA/norm, AT was 24 degrees C in the fourth week and ranged between 22 to 24 degrees C thereafter. Broilers in each condition were divided into 3 groups: feed restriction (FR) from 7 to 14 d, FR from 7 to 21 d, and ad libitum (AL). Ascites mortality and related parameters were recorded. Low mortality (0.4%) occurred under lowA/norm conditions. Under highA/norm, mortality was lower in females (8.6%) than in males (13.8%) and was not affected by the feeding regimen. The highA/cold treatment resulted in higher mortality but only in males; it was 44.2% among highA/cold AL-fed males and only about 26% under the FR regimens, suggesting that FR helped some males to better acclimatize to the highA/cold environment and avoid ascites. However, mortality was only 13.3% in AL-fed males at highA/norm and FR did not further reduce the incidence of ascites under these conditions. Thus, avoiding low AT in the poultry house by slight heating was more effective than FR in reducing ascites mortality at highA. Compared with FR from 7 to 14 d, FR from 7 to 21 d did not further reduce mortality and reduced growth. At 47 d, the majority of surviving broilers at highA had high levels of hematocrit and right ventricle:total ventricle weight ratio (>0.29), but they were healthy and reached approximately the same BW as their counterparts at low altitude. This finding may suggest that in broilers reared at highA from day of hatch, the elevation in hematocrit and in right ventricle:total ventricle weight ratio happens gradually and therefore is not necessarily indicative of ascites development.
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Affiliation(s)
- S Ozkan
- Faculty of Agriculture, Department of Animal Science, Ege University, Izmir 35100, Turkey.
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ERENER G, BURAK AK F, OCAK N. A study on feeding hazelnut kernel oil meal as a protein source for broiler chickens. Anim Sci J 2009; 80:305-9. [DOI: 10.1111/j.1740-0929.2009.00632.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Cangar O, Aerts JM, Vranken E, Berckmans D. Effects of different target trajectories on the broiler performance in growth control. Poult Sci 2008; 87:2196-207. [PMID: 18931168 DOI: 10.3382/ps.2008-00112] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Applying altered trajectories in broiler growth control with early feed restriction and a consequent accelerated catch-up growth has been approved to result in a better feed conversion ratio and a reduction in mortality. The properties of the growth trajectory and the resulting time and duration of the feed restriction can be crucial for animal welfare and production performance. The objective of this work was to test broiler growth control strategy online in field conditions using different target trajectories. Several experiments were conducted, and the best target trajectory has been proven to result in an end weight of 2,616 g and feed conversion ratio of 1.54 for Ross-type birds and an end weight of 2,472 g and a feed conversion ratio of 1.67 for Cobb-type birds.
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Affiliation(s)
- O Cangar
- Catholic University of Leuven, Faculty of Bioscience Engineering, Biosystems Department, Division Measure, Model & Manage Bioresponses, M3-BIORES, Kasteelpark Arenberg 30, B-3001 Heverlee, Belgium
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Ocak N, Sivri F. Liver colourations as well as performance and digestive tract characteristics of broilers may change as influenced by stage and schedule of feed restriction. J Anim Physiol Anim Nutr (Berl) 2008; 92:546-53. [DOI: 10.1111/j.1439-0396.2007.00746.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Cangar O, Aerts JM, Vranken E, Berckmans D. Online Growth Control as an Advance in Broiler Farm Management. Poult Sci 2007; 86:439-43. [PMID: 17297153 DOI: 10.1093/ps/86.3.439] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Growth control in broiler chickens has been proven to be an efficient method to ensure broiler performance and yield and to lessen health problems. The growth control procedure has been tested in literature using a limited amount of animals in experimental facilities. Under these "ideal" circumstances, the birds could follow predefined growth trajectories with accuracies ranging from 3.7 to 6% (mean relative error). The objective of this research was to test the above growth control procedure in the field in a real broiler farm, evaluate its accuracy, and explore its benefits for the broiler farmer. In this procedure, a model-based control algorithm was used to calculate the feed supply to the broilers with the intention of following a target growth trajectory as close as possible. A simultaneous small-scale experiment was performed to have an idea about the order of magnitude of the accuracy of the same procedure under "ideal" laboratory conditions. In farm conditions, the mean relative error between the target trajectory and the weight of the controlled birds was 7.3%. Higher than that under laboratory conditions (2.7%), it was indicative of the challenges of transferring the growth control procedure to real scale. On the other hand, the growth control procedure has been proved to be beneficial under the farm conditions in the feed conversion ratio. The feed conversion ratio of the controlled group was better (1.64) than the ad libitum-fed ones (1.68).
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Affiliation(s)
- O Cangar
- Faculty of Bioscience Engineering, Division Measure, Model and Manage Bioresponses, Biosystems Department, Katholieke Universiteit Leuven, B-3001 Heverlee, Belgium
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Saleh E, Watkins S, Waldroup A, Waldroup P. Effects of Early Quantitative Feed Restriction on Live Performance and Carcass Composition of Male Broilers Grown for Further Processing. J APPL POULTRY RES 2005. [DOI: 10.1093/japr/14.1.87] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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