1
|
Wise TL, Haetinger VS, Alagbe EO, Sorbara JOB, Adeola O. Evaluation of exogenous phytase in high-phytate diets for broiler chickens and pigs. Animal 2024; 18:101135. [PMID: 38636148 DOI: 10.1016/j.animal.2024.101135] [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: 09/19/2023] [Revised: 03/08/2024] [Accepted: 03/11/2024] [Indexed: 04/20/2024] Open
Abstract
There is a gap in the understanding of the relationship between dietary phytate levels and the relative efficacy of phytase to improve amino acid (AA) digestibility in pigs and chickens. Two experiments were conducted to investigate the effect of exogenous phytase on standardized ileal digestibility (SID) of AA and the apparent ileal digestibility (AID) of P in both standard- (SP) and high-phytate (HP) diets for broilers and swine. There were either 40 cages of Cobb 500 male broilers or 10 crossbred barrows (35 kg) fitted with ileal T-cannulas. Both studies were allotted to five dietary treatments (8 replicates). Treatments consisted of four corn-soybean meal-based diets arranged in a 2 × 2 factorial of standard or high phytate and exogenous phytase at 0 or 1 000 phytase units (FYT)/kg; and one N-free diet. Birds were fed a common starter diet from d 0 to 20 and fed experimental diets from d 20 to 25. Birds were euthanized on d 25 via CO2 asphyxiation, and digesta were collected from the terminal ileum. Pigs were fed for a total of four 7-d periods, where digesta were collected on d 6 and 7 of each period. Diet and digesta samples were analyzed for DM, N, Ti, AA, and P to determine AA and P digestibility. The SID of AA was determined by correcting the AID of AA for the basal endogenous losses estimated using the N-free diet. Main effects of the diet type (standard or HP) and phytase (0 or 1 000 FYT/kg), and the interaction of diet type and phytase were evaluated. For both experiments, the HP diets produced lower SID of AA compared to the SP (P < 0.001). For broilers, there was a phytase effect (P < 0.001) for the SID of all AAs evaluated regardless of the diet type. For pigs, phytase improved (P < 0.05) the SID of Met, Lys, Cys, Glu and Ser and tended to improve (P < 0.10) Arg, Leu, Thr, and Tyr. There were no significant interactions for either experiment. For both experiments, AID of P was lower for the HP diets (P < 0.01), and phytase produced greater AID of P for both diet types (P < 0.01). These data indicate that phytase greatly improves the digestibility of P for broilers and pigs and has the ability to significantly increase the digestibility of amino acids for these animals, regardless of the dietary phytate P.
Collapse
Affiliation(s)
- T L Wise
- Purdue University, Department of Animal Sciences, West Lafayette, IN 47907, USA
| | - V S Haetinger
- Purdue University, Department of Animal Sciences, West Lafayette, IN 47907, USA
| | - E O Alagbe
- Purdue University, Department of Animal Sciences, West Lafayette, IN 47907, USA
| | | | - O Adeola
- Purdue University, Department of Animal Sciences, West Lafayette, IN 47907, USA.
| |
Collapse
|
2
|
Interactive effects of calcium, vitamin D3, and exogenous phytase on phosphorus utilization in male broiler chickens from 1 to 21 days post-hatch: A meta-analysis approach. Anim Feed Sci Technol 2022. [DOI: 10.1016/j.anifeedsci.2022.115525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
3
|
Bai S, Yang Y, Ma X, Liao X, Wang R, Zhang L, Li S, Luo X, Lu L. Dietary calcium requirements of broilers fed a conventional corn-soybean meal diet from 1 to 21 days of age. J Anim Sci Biotechnol 2022; 13:11. [PMID: 35109932 PMCID: PMC8812165 DOI: 10.1186/s40104-021-00652-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 11/16/2021] [Indexed: 11/13/2022] Open
Abstract
Background The current calcium (Ca) recommendation for broilers is primarily based on studies conducted more than 30 years ago with birds of markedly different productive potentials from those which exist today. And the response indicators in these studies are mainly growth performance and bone ash percentage. Therefore, the present study was carried out to investigate the effect of dietary Ca level on growth performance, serum parameters, bone characteristics and Ca metabolism-related gene expressions, so as to estimate dietary Ca requirements of broilers fed a conventional corn-soybean meal diet from 1 to 21 days of age. Methods A total of 420 1-day-old Arbor Acres male broilers were randomly assigned to 1 of 7 treatments with 6 replicates (10 birds per cage) and fed the corn-soybean meal diets containing 0.60%, 0.70%, 0.80%, 0.90%, 1.00%, 1.10% or 1.20% Ca for 21 days. Each diet contained the constant non-phytate phosphorus content of about 0.39%. Results The average daily gain decreased linearly (P < 0.001) as dietary Ca level increased. The serum and tibia alkaline phosphatase (ALP) activities, tibia bone mineral density (BMD), middle toe BMD, tibia ash percentage, tibia breaking strength, and tibia ALP protein expression level were affected (P < 0.05) by dietary Ca level, and showed significant quadratic responses (P < 0.02) to dietary Ca levels. The estimates of dietary Ca requirements were 0.80 to 1.00% based on the best fitted broken-line or quadratic models (P < 0.03) of the above serum and bone parameters, respectively. Conclusions The results from the present study indicate that the Ca requirements would be about 0.60% to obtain the best growth rate, and 1.00% to meet all of the Ca metabolisms and bone development of broilers fed a conventional corn-soybean meal diet from 1 to 21 days of age.
Collapse
Affiliation(s)
- Shiping Bai
- Mineral Nutrition Research Division, State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.,Poultry Mineral Nutrition Laboratory, College of Animal Science and Technology, Yangzhou University, Yangzhou, 225000, China.,Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Yunfeng Yang
- Mineral Nutrition Research Division, State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Xuelian Ma
- Mineral Nutrition Research Division, State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Xiudong Liao
- Mineral Nutrition Research Division, State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Runlian Wang
- Department of Animal Science, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Liyang Zhang
- Mineral Nutrition Research Division, State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Sufen Li
- Department of Animal Science, Hebei Normal University of Science and Technology, Qinhuangdao, 066004, China
| | - Xugang Luo
- Poultry Mineral Nutrition Laboratory, College of Animal Science and Technology, Yangzhou University, Yangzhou, 225000, China.
| | - Lin Lu
- Mineral Nutrition Research Division, State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
| |
Collapse
|
4
|
Abstract
Many behavioral studies and histological analyses of the sense of taste have been conducted in chickens, as it plays an important role in the ingestion of feed. In recent years, various taste receptors have been analyzed, and the functions of fatty acids, umami, and bitter taste receptors in chickens have become clear. In this review, the bitter taste sense in chickens, which is the taste quality by which animals reject poisons, is discussed among a variety of taste qualities. Chickens have taste buds in the palate, the base of the oral cavity, and the root of the tongue. Bitter taste receptors, taste receptor type 2 members 1, 2, and 7 (T2R1, T2R2, and T2R7) are expressed in these tissues. According to functional analyses of bitter taste receptors and behavioral studies, T2R1 and T2R7 are thought to be especially involved in the rejection of bitter compounds in chickens. Furthermore, the antagonists of these two functional bitter taste receptors were also identified, and it is expected that such antagonists will be useful in improving the taste quality of feed materials and poultry drugs that have a bitter taste. Bitter taste receptors are also expressed in extra-oral tissues, and it has been suggested that gastrointestinal bitter taste receptors may be involved in the secretion of gastrointestinal hormones and pathogen defense mechanisms. Thus, bitter taste receptors in chickens are suspected to play major roles in taste sensing and other physiological systems.
Collapse
|
5
|
Bagheri R, Toghyani M, Tabatabaei SN, Tabeidian SA, Ostadsharif M. Growth, physiological, and molecular responses of broiler quail to dietary source, particle size, and choice feeding of calcium. ITALIAN JOURNAL OF ANIMAL SCIENCE 2021. [DOI: 10.1080/1828051x.2021.2017361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Reza Bagheri
- Department of Animal Science, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | - Majid Toghyani
- Department of Animal Science, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | | | - Sayed Ali Tabeidian
- Department of Animal Science, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | - Maryam Ostadsharif
- Department of Medical Basic Sciences, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
- Department of Medical Biotechnology, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| |
Collapse
|
6
|
Aderibigbe AS, Ajuwon KM, Adeola O. Dietary phosphorus level regulates appetite through modulation of gut and hypothalamic expression of anorexigenic genes in broiler chickens. Poult Sci 2021; 101:101591. [PMID: 34890944 PMCID: PMC8665405 DOI: 10.1016/j.psj.2021.101591] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 10/12/2021] [Accepted: 10/24/2021] [Indexed: 12/04/2022] Open
Abstract
Two experiments were designed to elucidate gut and hypothalamic molecular regulation of appetite by dietary phosphorus (P) concentration in broiler chickens. Birds (192 Cobb-500 broiler chickens) were randomly assigned to 3 experimental diets in experiment 1 (Exp. 1) and 24 broiler chickens were randomly assigned to 3 treatment groups in Exp. 2. Each diet comprised 8 replicate cages, with either 8 birds (Exp. 1) or 1 bird (Exp. 2) per replicate cage. In Exp. 1, diets contained 1.2 (P-deficient), 2.8 (P-marginal) or 4.4 (P-adequate) g/kg non-phytate P (nPP). In Exp. 2, birds fed the P-adequate diet were pair-fed (PF) to the feed consumption levels of birds fed the P-deficient diet. Feed intake and BW gain (P < 0.001) decreased in birds fed the P-deficient diet in Exp. 1. Birds fed the P-deficient diet had similar feed intake and BW gain with PF group fed the P-adequate diet (Exp. 2) but was significantly lower (P < 0.001) than birds fed the P-adequate diets. Sodium-phosphate cotransporter (NaPi-IIb) mRNA was upregulated (P < 0.05) in both experiments. Conversely, cholecystokinin (CCK) mRNA was downregulated (P < 0.01) in birds fed P-deficient diets. Anorexia-related hypothalamic cholecystokinin receptor (CCKAR) and melanocortin receptors (MC3R and MC4R) were upregulated (P < 0.05) in birds fed P-deficient diets, in both experiments. The current data show that dietary P deficiency decreases feed intake in broiler chickens by altering the expression of anorexigenic genes in the gut and hypothalamus of broiler chickens.
Collapse
Affiliation(s)
- A S Aderibigbe
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - K M Ajuwon
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - O Adeola
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA.
| |
Collapse
|
7
|
Ruhnke I, Akter Y, Sibanda TZ, Cowieson AJ, Wilkinson S, Maldonado S, Singh M, Hughes P, Caporale D, Bucker S, O’Shea CJ. The Response of Layer Hen Productivity and Egg Quality to an Additional Limestone Source When Offered Diets Differing in Calcium Concentrations and the Inclusion of Phytase. Animals (Basel) 2021; 11:ani11102991. [PMID: 34680010 PMCID: PMC8532841 DOI: 10.3390/ani11102991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 10/13/2021] [Accepted: 10/14/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Dietary calcium is essential for optimal egg production and quality in laying hens, but high concentrations can impede the digestibility of other dietary components. The provision of limestone grit in addition to the main diet may help maintain overall calcium intake while allowing a reduction in dietary calcium levels. The impact of phytase, an enzyme that increases calcium availability in the gut, on the voluntary consumption of limestone grit is unknown. Here, the capacity for hens with access to a separate limestone grit source to modify Ca consumption when offered varying dietary Ca levels and phytase was evaluated. Dietary phytase reduced limestone grit consumption. Egg production was unaffected by reducing dietary calcium levels or the phytase addition. Eggshell measurements worsened in line with decreasing dietary calcium levels despite the provision of limestone grit. In summary, the provision of limestone grit resulted in comparable egg production but not eggshell quality in hens offered suboptimal levels of dietary calcium. Abstract Laying hens require substantial quantities of calcium (Ca) to maintain egg production. However, maintaining recommended dietary Ca through inclusion of limestone may impede nutrient digestibility, including that of other minerals. It was hypothesized that providing a separate source of dietary Ca in the form of limestone grit would preserve Ca intake of hens offered diets containing suboptimal Ca concentrations. Furthermore, the impact of dietary phytase at a “superdosing” inclusion rate on the voluntary consumption of limestone grit was evaluated. One hundred and forty-four laying hens (19 weeks of age) were assigned to one of six dietary treatments in a 3 × 2 factorial arrangement comprising three dietary Ca concentrations (40, 30, and 20 g/kg) and ±dietary phytase (3500 FYT/kg diet) on an ad libitum basis for six weeks. Limestone grit (3.4 ± 1.0 mm) was provided to all hens ad libitum. Hens offered diets containing phytase consumed significantly less limestone grit p = 0.024). Egg weight, rate of lay, and egg mass were unaffected by dietary treatment (p > 0.05). Egg shell weight % (p < 0.001), shell thickness (p < 0.001), and shell breaking strength (p < 0.01) decreased in line with dietary Ca levels. In summary, dietary superdosing with phytase reduced the consumption of a separate limestone source in individually housed, early lay ISA Brown hens. Egg shell quality variables but not egg production worsened in line with lower dietary Ca levels.
Collapse
Affiliation(s)
- Isabelle Ruhnke
- School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia; (I.R.); (T.Z.S.)
| | - Yeasmin Akter
- Sydney School of Veterinary Science, University of Sydney, Sydney, NSW 2570, Australia; (Y.A.); (S.M.); (M.S.); (P.H.); (D.C.); (S.B.)
| | - Terence Zimazile Sibanda
- School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia; (I.R.); (T.Z.S.)
| | | | | | - Stephanie Maldonado
- Sydney School of Veterinary Science, University of Sydney, Sydney, NSW 2570, Australia; (Y.A.); (S.M.); (M.S.); (P.H.); (D.C.); (S.B.)
| | - Mini Singh
- Sydney School of Veterinary Science, University of Sydney, Sydney, NSW 2570, Australia; (Y.A.); (S.M.); (M.S.); (P.H.); (D.C.); (S.B.)
| | - Patrick Hughes
- Sydney School of Veterinary Science, University of Sydney, Sydney, NSW 2570, Australia; (Y.A.); (S.M.); (M.S.); (P.H.); (D.C.); (S.B.)
| | - Dylana Caporale
- Sydney School of Veterinary Science, University of Sydney, Sydney, NSW 2570, Australia; (Y.A.); (S.M.); (M.S.); (P.H.); (D.C.); (S.B.)
| | - Stephan Bucker
- Sydney School of Veterinary Science, University of Sydney, Sydney, NSW 2570, Australia; (Y.A.); (S.M.); (M.S.); (P.H.); (D.C.); (S.B.)
| | - Cormac John O’Shea
- School of Life and Environmental Sciences, University of Sydney, Sydney, NSW 2570, Australia
- School of Biosciences, University of Nottingham, Loughborough, Leicestershire LE12 5RD, UK
- Department of Bioveterinary and Microbial Sciences, Technological University of the Shannon, Midlands Midwest, N37 HD68 Athlone, Ireland
- Correspondence:
| |
Collapse
|
8
|
Do S, Koutsos EA, Utterback PL, Parsons CM, de Godoy MRC, Swanson KS. Amino acid digestibility and digestible indispensable amino acid score-like values of black soldier fly larvae fed different forms and concentrations of calcium using the precision-fed cecectomized rooster assay. J Anim Sci 2021; 99:skab124. [PMID: 33880561 PMCID: PMC8188813 DOI: 10.1093/jas/skab124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 04/15/2021] [Indexed: 12/23/2022] Open
Abstract
Black soldier fly larvae (BSFL) are an alternative protein source for animals, including dogs and cats. Dietary calcium source is an essential nutrient for BSFL development in the pupal stage. Calcium carbonate (CaCO3) and calcium chloride (CaCl2) are common calcium sources but differ in solubility, acid-binding capacity, and calcium concentration. A high calcium concentration in BSFL may affect how well nitrogen and amino acids (AA) are digested by animals consuming them, thereby affecting feed conversion efficiency. Our objective was to determine the effects of dietary calcium form and concentration on nutrient composition, AA digestibility, and digestible indispensable amino acid score (DIAAS)-like values of BSFL intended for use in animal feeds using the precision-fed cecectomized rooster assay. All BSFL tested in this study were harvested at 18 d after hatch. Industry standard rearing conditions were maintained and a commercial layer ration was fed to all BSFL until 11 d post-hatch. From day 11 to 18, BSFL were fed a combination of distiller's dried grains with solubles from a distillery, bakery byproduct meal, and varied calcium sources. All BSFL diets contained 0.2% calcium in the basal diet plus additional calcium in the following amounts and forms: BSFLA: 1.2% CaCl2, BSFLB: 1.2% CaCO3, BSFLC: 0.75% CaCO3, and BSFLD: 0.6% CaCO3 + 0.6% CaCl2. On day 18, BSFL were washed and frozen. Prior to the rooster assay, BSFL were lyophilized and ground. In total, 16 cecectomized roosters (4 roosters per substrate) were randomly assigned to test substrates. After 24 h of feed withdrawal, roosters were tube-fed 20 g of test substrates. Following crop intubation, excreta were collected for 48 h. Endogenous corrections for AA were made using five additional cecectomized roosters. All data were analyzed using a completely randomized design and the GLM procedure of SAS 9.4. Nutrient and AA digestibilities were not different among substrates. DIAAS-like values were calculated to determine protein quality according to the Association of American Feed Control Officials nutrient profiles and National Research Council recommended allowances for dogs and cats. Although AA digestibilities did not differ, those containing CaCO3 generally had higher DIAAS-like reference values than the diet containing CaCl2 alone (BSFLA). Aromatic AA (Phe + Tyr) and sulfur AA (Met + Cys) were often first-limiting AA. Our results suggest that calcium sources fed to BSFL did not affect AA digestibility and protein quality.
Collapse
Affiliation(s)
- Sungho Do
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | | | - Pamela L Utterback
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Carl M Parsons
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Maria R C de Godoy
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Kelly S Swanson
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Veterinary Clinical Medicine, University of Illinois at Urbana-Champaign, Urbana IL 61801, USA
| |
Collapse
|
9
|
Alagawany M, Ashour EA, El-Kholy MS, Mohamed LA, Abd El-Hack ME. Effect of dietary calcium and phosphorus levels on growth, carcass characteristics and liver and kidney functions of growing Egyptian geese. Poult Sci 2021; 100:101244. [PMID: 34217905 PMCID: PMC8256282 DOI: 10.1016/j.psj.2021.101244] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 04/06/2021] [Accepted: 05/02/2021] [Indexed: 11/27/2022] Open
Abstract
The present study investigated the effect of different dietary levels of calcium (Ca) and non-phytate phosphorus (P) on the growth performance, carcass characteristics, and blood components of growing geese. A total of 120, 4-wk-old Egyptian goslings with similar body weights were randomly distributed to four groups in a 2 × 2 factorial arrangement, which included 2 levels of Ca (0.85% and 0.70%) and 2 levels of non-phytate P (0.45% and 0.35%). Each group was subdivided into 6 replicates of five birds. The experiment lasted 8 wk, from 4 to 12 wk of age. Results show that dietary Ca level had no significant effect on any of the studied growth performance traits over the full experimental period. Dietary P level also had no significant impact on these traits, with the exception of daily body weight gain and feed conversion ratio at 8 to 12 wk of age; these improved significantly with the low P diet. Geese received a diet containing 0.70% Ca + 0.45% P had the lowest body weight values at 12 wk of age and the lowest daily body weight gain, and feed intake at 8 to 12 weeks of age. While, the lowest value of feed conversion ratio was recorded in geese fed low level of Ca with low level of P (0.70% Ca + 0.35% P). There were no significant effects of the different dietary levels of Ca, P, or their interaction on all studied carcass parameters. Low dietary Ca level significantly increased the plasma levels of total protein, albumin, alanine transaminase (ALT), aspartate transaminase (AST), and creatinine and significantly decreased the plasma levels of Ca and P. Different dietary P levels had no significant effect on plasma levels of albumin, AST, ALT, ALP, and urea, whereas the 0.35% P-based diet significantly decreased the plasma contents of total protein, creatinine, Ca, and P. Plasma levels of albumin, creatinine, urea, Ca, and P were not affected by an interaction between Ca and P. Diets containing 0.70% Ca and 0.45% P lead to the highest plasma values for total protein, ALT, AST, and ALP compared with the other dietary Ca and P combinations. In conclusion, dietary Ca and P levels can be simultaneously reduced without negative impacts on growth performance, carcass characteristics, or blood biochemical components. We advise to avoid increasing the dietary Ca: P ratio, as it leads to negative effects on growth performance and blood biochemistry in growing geese. So, the findings of the current study recommended the low levels of Ca (0.70%) and non-phytate P (0.35%) for the performance of Egyptian geese during the fattening period.
Collapse
Affiliation(s)
- Mahmoud Alagawany
- Poultry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt.
| | - Elwy Ali Ashour
- Poultry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | | | - Laila Ali Mohamed
- Poultry Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | | |
Collapse
|
10
|
Cho HM, Hong JS, Kim YB, Nawarathne SR, Choi I, Yi YJ, Wu D, Lee H, Han SE, Nam KT, Seoung EI, Heo JM. Responses in growth performance and nutrient digestibility to a multi-protease supplementation in amino acid-deficient broiler diets. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2020; 62:840-853. [PMID: 33987564 PMCID: PMC7721581 DOI: 10.5187/jast.2020.62.6.840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 09/23/2020] [Accepted: 09/23/2020] [Indexed: 11/20/2022]
Abstract
The present study was conducted to investigate the effect of a multi-protease on
production indicators of broiler chickens fed a crude protein and amino acid
deficient-diets for 35 days immediately after hatch. A total of 448 one-day-old
Ross 308 male broiler chicks were allocated in a completely randomized design
into one of eight dietary treatments (positive control [PC], negative control
[NC: minus 0.5% from PC, and minus 2% of lysine, methionine, threonine and
methionine plus cysteine], extreme negative control [ENC: minus 1% from PC,
minus 4% of lysine, methionine, threonine and methionine plus cysteine], and
plus multi-protease 150 or 300 g per ton [e. g., PC-150]; PC, PC-150, NC,
NC-150, NC-300, ENC, ENC-150, ENC-300) to give eight replicates with seven birds
in a battery cage. Body weight, average daily gain, average daily feed intake,
feed conversion ratio, and mortality were measured every week. Carcass traits,
proximate analysis of breast meat, and ileum digestibility were analyzed on day
21 and 35. Feeding a multi-protease (i.e., more than 150 g/ton) for 35 days
immediately after hatching improved feed efficiency and ileum digestibility
(i.e., dry matter, crude protein, and energy) compared to their counterparts
(i.e., diets without multi-protease: PC, NC, and ENC). In conclusion, our
results indicated that broiler chickens fed nutrients deficient-diet (i.e.,
crude protein and amino acids) supplemented a multi-protease had an ability to
compensate and (or) improve their growth performance commensurate with increased
ileal digestibility for 35 days immediately after hatch.
Collapse
Affiliation(s)
- Hyun Min Cho
- Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, Korea
| | - Jun Sun Hong
- Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, Korea
| | - Yu Bin Kim
- Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, Korea
| | - Shan Randima Nawarathne
- Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, Korea
| | - Inchul Choi
- Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, Korea
| | - Young-Joo Yi
- Department of Agricultural Education, College of Education, Sunchon National University, Suncheon 57922, Korea
| | - Di Wu
- Kemin Industries, Inc., 12 Senoko Drive 758200, Singapore
| | - Hans Lee
- Kemin Industries, Inc., 12 Senoko Drive 758200, Singapore
| | - Seung Eun Han
- Kemin Industries, Inc., 12 Senoko Drive 758200, Singapore
| | - Ki Taeg Nam
- Department of Animal Science and Biotechnology, Hankyong National University, Anseong 17579, Korea
| | - Eun Il Seoung
- Department of Animal Science and Biotechnology, Hankyong National University, Anseong 17579, Korea
| | - Jung Min Heo
- Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, Korea
| |
Collapse
|
11
|
Corrêa TLR, de Araújo EF. Fungal phytases: from genes to applications. Braz J Microbiol 2020; 51:1009-1020. [PMID: 32410091 PMCID: PMC7455620 DOI: 10.1007/s42770-020-00289-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 04/30/2020] [Indexed: 12/18/2022] Open
Abstract
Phytic acid stores 60-90% of the inorganic phosphorus in legumes, oil seeds, and cereals, making it inaccessible for metabolic processes in living systems. In addition, given its negative charge, phytic acid complexes with divalent cations, starch, and proteins. Inorganic phosphorous can be released from phytic acid upon the action of phytases. Phytases are phosphatases produced by animals, plants, and microorganisms, notably Aspergillus niger, and are employed as animal feed additive, in chemical industry and for ethanol production. Given the industrial relevance of phytases produced by filamentous fungi, this work discusses the functional characterization of fungal phytase-coding genes/proteins, highlighting the physicochemical parameters that govern the enzymatic activity, the development of phytase super-producing strains, and key features for industrial applications.
Collapse
Affiliation(s)
- Thamy Lívia Ribeiro Corrêa
- Department of Microbiology/BIOAGRO, Federal University of Viçosa, Av. Peter Henry Rolfs s/n, Vicosa, MG, 36570-000, Brazil.
| | - Elza Fernandes de Araújo
- Department of Microbiology/BIOAGRO, Federal University of Viçosa, Av. Peter Henry Rolfs s/n, Vicosa, MG, 36570-000, Brazil
| |
Collapse
|
12
|
Zanu HK, Kheravii SK, Morgan NK, Bedford MR, Swick RA. Interactive effect of 2 dietary calcium and phytase levels on broilers challenged with subclinical necrotic enteritis: part 1-broiler performance, gut lesions and pH, bacterial counts, and apparent ileal digestibility. Poult Sci 2020; 99:4861-4873. [PMID: 32988523 PMCID: PMC7810914 DOI: 10.1016/j.psj.2020.05.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 05/06/2020] [Accepted: 05/22/2020] [Indexed: 12/25/2022] Open
Abstract
This study investigated the hypothesis that high dietary calcium (Ca) would stimulate necrotic enteritis (NE) and reduce performance, gut health, and nutrient digestibility, and if increased, phytase would reduce NE. Ross 308 male broilers (n = 768) were randomly distributed to 8 treatments in a factorial arrangement. Factors were NE challenge (no or yes), phytase level (500 or 1,500 FTU/kg using 500 FTU/kg matrix values), and Ca level (0.6 or 1.0% starter, 0.5 or 0.9% grower, 0.4 or 0.8% finisher) with the same level of available P (0.40 S, 0.35 G, and 0.35 F). There were 48 pens, 16 birds per pen and 6 replications. Half of the birds were challenged with Eimeria spp on day 9 and 108 CFU per mL of Clostridium perfringens strain EHE-NE18 on day 14 and 15. Gain was higher in birds fed high phytase on day 14 (P < 0.01), day 21 (P < 0.01), day 28 (P < 0.01), and day 35 (P < 0.01). Birds fed high phytase had greater livability on day 21 (P < 0.01). Ca was more digestible in high-Ca diets on day 16, and an NE × Ca interaction (P < 0.05) showed this effect to be more pronounced in unchallenged than in challenged birds. A challenge × Ca interaction for apparent ileal digestibility (AID) of crude protein (CP) (P < 0.05) indicated lower AID of CP in challenged birds fed high Ca. The challenge decreased AID of Ca (P < 0.01). Ca level had no impact on C. perfringens count, but it decreased Lactobacillus (P < 0.05) and Bifidobacteria (P < 0.05) populations in the ceca. High dietary Ca decreased feed conversion ratio. Overall (42 D), the highest WG was observed in unchallenged birds fed high Ca and high phytase with the lowest WG observed in NE-challenged birds fed low Ca and low phytase. The results suggest that full matrix values for high doses of phytase may be appropriate during NE challenge.
Collapse
Affiliation(s)
- H K Zanu
- School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia
| | - S K Kheravii
- School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia
| | - N K Morgan
- School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia
| | - M R Bedford
- AB Vista, Marlborough, Wiltshire SN8 4AN, United Kingdom
| | - R A Swick
- School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia.
| |
Collapse
|
13
|
Effect of Oat Hulls Incorporated in the Diet or Fed as Free Choice on Growth Performance, Carcass Yield, Gut Morphology and Digesta Short Chain Fatty Acids of Broiler Chickens. SUSTAINABILITY 2020. [DOI: 10.3390/su12093744] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The use of high fiber agricultural byproducts in poultry nutrition can help not only to reduce feed cost but also to promote gastrointestinal functionality and growth performance and enhance environmental sustainability. This study was conducted to examine the effect of oat hulls (OH) incorporated in the diet or fed as free choice on growth performance, intestinal morphology, cecal short chain fatty acids (SCFA) production and carcass yield of broiler chickens. Day old broiler chickens were assigned to 4 dietary treatment groups which consisted of a corn–soybean meal–wheat based diet (Basal), Basal + bacitracin methylene disalicylate (BMD), Basal + 3% OH (3% OH) and Basal + free choice OH (FCOH). Each group had six replicate pens of 27 chicks and were raised for 39 d. Feed intake (FI), body weight gain (BWG), and feed conversion ratio (FCR) were determined weekly for each pen. One chicken/pen was slaughtered on d 36 to determine organ weights, jejunal morphology, digesta pH and cecal SCFA and two chickens/pen were slaughtered on d 39 to determine carcass weight and yield. Diet had no effect on FI, except on d 28, when the FCOH group had higher FI than the 3% OH groups. During the starter phase, chickens fed 3% OH had the highest BWG and lowest FCR, which were significantly different (p < 0.05) from those fed FCOH. Chickens fed 3% OH had the highest slaughter, hot carcass, and cold carcass weights, which were significantly different (p < 0.05) from those fed FCOH. Diet had no effect on jejunal villus height and crypt depth, ileal and cecal digesta pH, and cecal SCFA. Chickens fed FCOH had a larger (p < 0.0001) gizzard weight and showed a tendency to have a larger (p = 0.09) ceca weight than other treatment groups. In conclusion, the inclusion of 3% OH in an antibiotic-free diet has the potential to enhance growth performance, while free choice OH increases the gizzard weight of broiler chickens.
Collapse
|
14
|
Mtei AW, Abdollahi MR, Schreurs NM, Ravindran V. Impact of corn particle size on nutrient digestibility varies depending on bird type. Poult Sci 2020; 98:5504-5513. [PMID: 31329975 DOI: 10.3382/ps/pez206] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 03/21/2019] [Indexed: 11/20/2022] Open
Abstract
The interaction between bird type (broilers and layers) and corn particle size (fine, medium, and coarse) on the coefficient of apparent ileal digestibility (CAID) of DM, nitrogen (N), starch, fat, gross energy (GE), calcium (Ca) and phosphorus (P), and AMEn was investigated in a 2 by 3 factorial study of 6 dietary treatments. Whole corn was ground in a hammer mill to pass through screen sizes of 2.0, 5.0, and 8.0 mm for fine, medium, and coarse grades, respectively. A corn-soybean meal diet, mixed using the same batch of ingredients, was fed to both bird types. Titanium dioxide was included in all diets for digestibility measurements. 35-day-old Ross 308 male broilers and 59-wk-old Hy-Line Brown layers were used in this study. For each bird type, 108 birds of uniform body weights were accommodated in 18 replicates (6 replicates per particle size and 6 birds per replicate). The treatment diets were offered ad libitum for 7 d prior to the collection of ileal digesta. A bird type by particle size interaction was observed (P < 0.001) for the CAID of DM, starch and GE. In broilers, CAID of DM, starch and GE was unaffected by particle size, whilst in layers, increasing the corn particle size to medium and coarse resulted in a greater (P < 0.05) CAID for DM, starch and GE compared to fine particles. The CAID of N and fat was greater (P < 0.05) in broilers than layers and the opposite was observed (P < 0.05) for Ca and P. Regardless of bird type, coarse and medium-ground corn resulted in a greater (P < 0.05) Ca digestibility compared to finely-ground corn. Overall, broilers had a greater digestibility of nutrients than layers, except for Ca and P. Feeding medium and coarse corn particles benefited the CAID of DM, starch and GE in layers, suggesting that digestive system in these birds is probably more sensitive to feed particle size than broilers.
Collapse
Affiliation(s)
- A W Mtei
- Monogastric Research Centre, School of Agriculture and Environment, Massey University, Palmerston North 4442, New Zealand
| | - M R Abdollahi
- Monogastric Research Centre, School of Agriculture and Environment, Massey University, Palmerston North 4442, New Zealand
| | - N M Schreurs
- Monogastric Research Centre, School of Agriculture and Environment, Massey University, Palmerston North 4442, New Zealand
| | - V Ravindran
- Monogastric Research Centre, School of Agriculture and Environment, Massey University, Palmerston North 4442, New Zealand
| |
Collapse
|
15
|
Combination of phytase and organic acid for broilers: role in mineral digestibility and phytic acid degradation. WORLD POULTRY SCI J 2019. [DOI: 10.1017/s0043933918000697] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
16
|
Fallah H, Karimi A, Sadeghi GH, Behroozi-Khazaei N. The effects of calcium source and concentration on performance, bone mineralisation and serum traits in male broiler chickens from 1 to 21 days of age. ANIMAL PRODUCTION SCIENCE 2019. [DOI: 10.1071/an18166] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In total, 840 1-day-old male broiler chickens (Ross 308) were used to evaluate the effects of seven dietary calcium (Ca) concentrations (4.0, 5.5, 7.0, 8.5, 10.0, 11.5 and 13.0 g/kg, at a fixed concentration of 4.0 g/kg of non-phytate phosphorus) and two calcium sources (oyster shell and limestone) on broiler chicken Ca requirements for optimal growth rate and bone mineralisation from 1 to 21 days of age. All chickens were randomly distributed into 14 treatment groups (seven treatments of each Ca source), each being replicated four times, with 15 birds per each replicate. Results indicated that Ca source and Ca source × Ca concentration interaction had no significant (P > 0.05) effects on birds average feed intake, but increasing Ca concentration to >8.5 g/kg significantly deteriorated average feed intake. Average weight gain and feed conversion ratio were significantly influenced by Ca source × Ca concentration interaction, whereby high concentrations of Ca from oyster shell resulted in a poorer performance for both criteria than did those from limestone. Serum Ca, P and total protein were not affected by Ca source. However, increasing Ca concentrations had adverse effects on serum P concentration (P < 0.05). Toe ash, tibia ash and phosphorus concentrations at 21 days were not influenced by Ca source, but were depressed as dietary Ca concentration increased (P < 0.05). A broken-line regression analysis indicated that the Ca requirements to optimise average weight gain and tibia ash when limestone was used as a Ca source were 5.54 and 6.58 g/kg of diet respectively, and 5.80 and 6.43 g/kg of diet respectively, when oyster shell was used. In conclusion, the results indicated that Ca concentration, more than Ca source, has a significant influence on broiler chicken performance and bone mineralisation, all of which deteriorate when the dietary Ca concentration exceeds 8.5 g/kg at the constant available-phosphorus concentration of 4.0 g/kg.
Collapse
|
17
|
Ajith S, Shet D, Ghosh J, Awachat VB, Bhat K, Pal D, Elangovan AV. Effect of immobilized fungal phytase on growth performance and bone traits of broilers fed with low dietary calcium and phosphorus. Vet World 2018; 11:758-764. [PMID: 30034166 PMCID: PMC6048074 DOI: 10.14202/vetworld.2018.758-764] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 04/30/2018] [Indexed: 11/16/2022] Open
Abstract
AIM The aim of this study was to investigate the effects of phytase which was laboratory produced by Aspergillus foetidus on the growth performance, mineral retention, and bone traits of broilers fed with low dietary calcium and phosphorus. MATERIALS AND METHODS The extracellular phytase enzyme secreted into the crude filtrate was concentrated by ammonium sulfate precipitation to obtain an activity of 500 phytase units (FTU). A total of 90 1-day-old chicks (Cobb 500) were randomly divided into three treatment groups with five replicates having six birds each. Dietary treatment, T1, was with 0.45% non-phytate P (NPP) during starter and 0.40% during finisher phase with 1% Ca. Dietary treatment, T2, had 0.37% NPP during starter and 0.32% in finisher phase with 1% Ca and supplemental lab phytase at 500 FTU/kg. Dietary treatment, T3, was similar to T2 with a lower Ca of 0.8%. RESULTS There was no significant difference among the dietary treatments with regard to body weight gain, feed intake, feed conversion ratio, and Ca retention (p>0.05). However, a significant improvement in retention of P by birds was observed in phytase supplemental groups T2 and T3 (p<0.05). Dry weight of tibia (2.58-2.78 g/kg live weight) and ash content (39.7-41.8%) was comparable among treatments. A similar trend was observed for bone Ca, P, and Mn content. CONCLUSION The study indicated that 500 FTU/kg phytase can be effectively supplemented in a broiler diet with low phosphorus (0.37% in starter and 0.32% NPP in finisher diet) and low calcium (0.8% in diet) for better growth performance and with successful replacement of dietary P by 0.08 % and reduced P excretion into the environment in broiler chicken.
Collapse
Affiliation(s)
- Sreeja Ajith
- ICAR-National Institute of Animal Nutrition and Physiology, Bengaluru, Karnataka, India
- Department of Microbiology, Jain University Bengaluru, Karnataka, India
| | - Divya Shet
- ICAR-National Institute of Animal Nutrition and Physiology, Bengaluru, Karnataka, India
- Department of Biotechnology, Jain University, Bengaluru, Karnataka, India
| | - Jyotirmoy Ghosh
- ICAR-National Institute of Animal Nutrition and Physiology, Bengaluru, Karnataka, India
| | - Vaibhav B. Awachat
- ICAR-National Institute of Animal Nutrition and Physiology, Bengaluru, Karnataka, India
| | - Karthik Bhat
- ICAR-National Institute of Animal Nutrition and Physiology, Bengaluru, Karnataka, India
| | - Dintaran Pal
- ICAR-National Institute of Animal Nutrition and Physiology, Bengaluru, Karnataka, India
| | | |
Collapse
|
18
|
|
19
|
Cowieson A, Ruckebusch J, Knap I, Guggenbuhl P, Fru-Nji F. Phytate-free nutrition: A new paradigm in monogastric animal production. Anim Feed Sci Technol 2016. [DOI: 10.1016/j.anifeedsci.2016.10.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
20
|
Investigation of the interaction between separate calcium feeding and phytase supplementation on growth performance, calcium intake, nutrient digestibility and energy utilisation in broiler starters. Anim Feed Sci Technol 2016. [DOI: 10.1016/j.anifeedsci.2016.05.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
21
|
Sadeghi A, Toghyani M, Gheisari A. Effect of various fiber types and choice feeding of fiber on performance, gut development, humoral immunity, and fiber preference in broiler chicks. Poult Sci 2016; 94:2734-43. [PMID: 26500273 DOI: 10.3382/ps/pev292] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Two experiments were conducted to investigate the effect of fibrous materials with one single diet or by choice feeding on performance, intestinal morphology, immunity, and fiber preference in broiler chicks. In experiment 1, 240-day-old chicks (Ross 308) were assigned to one of 4 treatments, comprising 5 replicates per treatment in a completely randomized design. Dietary treatments included: a basal diet (control) or 30 g/kg sugar beet pulp (SBP), 30 g/kg rice hull (RH), or 30 g/kg equal combination of them (SBP/RH) added to the basal diet. Results showed SBP and SBP/RH impaired daily weight gain (DWG) in the growing period compared with control (P < 0.05). Additionally, chickens that received SBP had deteriorated FCR across the entire rearing period (P < 0.05). In comparison to control and SBP, supplementing SBP/RH significantly increased antibody titer against Newcastle disease virus (NDV; P < 0.05) at 23 d of age. Furthermore, SBP reduced duodenal and ileal villus height compared with control at 21 d of age. In experiment 2, a total of 240 chicks were allotted to 4 experimental treatments of feeding: 1) control; or choice feeding between 2) control and SBP (C-SBP); 3) control and RH (C-RH); 4) control and SBP/RH (C- SBP/RH). Results indicated that chicks had a tendency to use separate sources of fiber. RH was consumed lower than C-SBP/RH and C-SBP in starter and growing periods, respectively (P < 0.05). Chickens choice fed RH and SBP/RH had greater daily feed intake than control across 14 to 28 d of age (P < 0.05). However, DWG reduced in all fiber fed birds (P < 0.05) and resulted in impaired FCR in broilers of the C-SBP group (P < 0.05). In addition, choice feeding of SBP/RH increased antibody titer against NDV as compared with control and SBP (P < 0.05). In conclusion, fiber inclusion in both experiments impaired growth performance but an equal combination of fiber improved immunity. In addition, broilers had a tendency to use separate sources of fiber.
Collapse
Affiliation(s)
- Amin Sadeghi
- Department of Animal Science, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | - Majid Toghyani
- Department of Animal Science, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | - Abasali Gheisari
- Department of Animal Science, Isfahan Agricultural Research Center, Isfahan, Iran
| |
Collapse
|
22
|
Influence of separate feeding of calcium on nutrient digestibility, energy utilisation and performance of young broilers fed pelleted wheat-based diets. Anim Feed Sci Technol 2015. [DOI: 10.1016/j.anifeedsci.2015.04.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
23
|
Cowieson AJ, Aureli R, Guggenbuhl P, Fru-Nji F. Possible involvement of myo-inositol in the physiological response of broilers to high doses of microbial phytase. ANIMAL PRODUCTION SCIENCE 2015. [DOI: 10.1071/an14044] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The effect of high (1000–3000 phytase units (FYT)/kg) doses of microbial phytase on performance, nutrient digestibility and plasma inositol concentrations in young Ross broiler chicks was investigated in two separate experiments. In both experiments pelleted corn/soy-based diets were used and experimental duration was from Days 8 to 21 and Days 15 to 28 in Experiments 1 and 2, respectively. Treatments in Experiment 1 were arranged as a 2 × 4 + 1 factorial with two concentrations of calcium and available phosphorus and four concentrations of phytase (0, 1000, 2000 or 3000 FYT/kg), with a reference diet containing additional phosphorus and calcium from inorganic sources. In Experiment 2 only four dietary treatments were used, being a nutritionally adequate positive control, a negative control formulated to be insufficient in calcium and available phosphorus and the negative control supplemented with either 1000 or 2000 FYT/kg exogenous phytase. In both experiments, phytase improved performance relative to the appropriate control diet and increased the retention of calcium and phosphorus (P < 0.001). Tibia strength and ash content were increased (P < 0.001) by phytase addition. Plasma inositol concentrations were substantially increased (P < 0.001) by phytase addition to the diet. As inositol has been found to be an insulin mimetic in a range of animal species, these results suggest that part of the beneficial effect of high doses of phytase in broiler production may be conferred via insulin-like mechanisms. The effect of phytase on the expression of insulin-sensitive glucose transport systems, gluconeogenesis and nitrogen cycling is an area for future research. It can be concluded that phytase is effective in improving performance of broiler chicks fed diets that are sufficient and insufficient in calcium and phosphorus. Furthermore, phytase addition results in increased plasma inositol concentrations that may be beneficial in nutrient transport and protein deposition.
Collapse
|
24
|
Li W, Angel R, Kim SW, Jiménez-Moreno E, Proszkowiec-Weglarz M, Iglesias BF, Wilkinson SJ, Cowieson AJ. Assessment of postcrumble addition of limestone and calcium-specific appetite in broilers during the starter phase. Poult Sci 2014; 93:2578-91. [PMID: 25085931 PMCID: PMC4988541 DOI: 10.3382/ps.2014-04081] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A study was done to determine whether broilers can regulate Ca intake when limestone is provided separately or mixed with a crumbled feed of variable Ca and P content, and the influence of this on performance and apparent ileal digestibility (AID) of Ca and P (AIDP). Twelve crumbled diets were fed from 10 to 20 d of age (8 replicates, 8 broilers/replicate). Diets A to D contained 0.28% nonphytate P (nPP) and 0.27, 0.51, 0.77, and 1.02% Ca, respectively. Diets E to H contained 0.48% nPP and 0.41, 0.51, 0.77, and 1.02% Ca, respectively. A large particle size limestone was mixed manually to the crumbled diet on a daily basis to achieve 1.02% total Ca in diets A to H. Diets I to L had the same Ca and nPP as diets A to D, but limestone was provided in a separate feeder to assess spatial importance of limestone supply. Limestone consumption, provided in a separate feeder, decreased as Ca concentration increased in the crumble diet (P < 0.05). Calcium intake increased as Ca concentration in crumbled diets increased (P < 0.05). Increased tibia ash and decreased AIDP were observed as Ca intake increased (P < 0.05). When limestone was added to diets containing 0.28% nPP postcrumble, Ca intake (6.38 g/bird), tibia ash (717 mg/bone), and AIDP (39.78%) were not affected by crumbled diet Ca concentration or consumed Ca. Broilers fed diets containing 0.48% nPP and limestone mixed with the crumble, Ca intake changed (5.96, 6.93, 6.59, and 6.04 g/bird for crumble diet with 0.41, 0.51, 0.77, and 1.02% Ca, respectively). Increasing Ca concentration in the crumble from 0.41 to 1.02% resulted in greater tibia ash (875 mg/bone) but lower AIDP (P < 0.05), although Ca intake was similar. In conclusion, when large particle size limestone was provided ad libitum, the ability of broilers to select for Ca was not sufficient to meet their requirement when crumble Ca was less than 0.77%. The AIDP was highest in birds fed the 0.27% Ca concentration diet.
Collapse
Affiliation(s)
- W Li
- Department of Animal and Avian Sciences, University of Maryland, College Park 20740
| | - R Angel
- Department of Animal and Avian Sciences, University of Maryland, College Park 20740
| | - S-W Kim
- Department of Animal and Avian Sciences, University of Maryland, College Park 20740
| | - E Jiménez-Moreno
- Department of Animal and Avian Sciences, University of Maryland, College Park 20740
| | | | - B F Iglesias
- Instituto Nacional de Tecnología Agropecuaria, Pergamino, 1425, Argentina
| | - S J Wilkinson
- Poultry Research Foundation, Faculty of Veterinary Science, the University of Sydney, Sydney, 2006, Australia
| | - A J Cowieson
- Poultry Research Foundation, Faculty of Veterinary Science, the University of Sydney, Sydney, 2006, Australia
| |
Collapse
|
25
|
Wilkinson S, Bradbury E, Bedford M, Cowieson A. Effect of dietary nonphytate phosphorus and calcium concentration on calcium appetite of broiler chicks. Poult Sci 2014; 93:1695-703. [DOI: 10.3382/ps.2013-03537] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
26
|
Wilkinson SJ, Bradbury EJ, Thomson PC, Bedford MR, Cowieson AJ. Nutritional geometry of calcium and phosphorus nutrition in broiler chicks. The effect of different dietary calcium and phosphorus concentrations and ratios on nutrient digestibility. Animal 2014; 8:1080-8. [PMID: 24840343 DOI: 10.1017/s1751731114001049] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
A total of 600 Ross 308-day-old male broiler chicks were used in a 28 day digestibility study to investigate the interaction between dietary calcium (Ca) and non-phytate phosphorus (nPP) on the digestibility of minerals and amino acids. Diets were formulated to be nutritionally adequate except for Ca and nPP. Fifteen mash diets based on corn and soya bean meal with varying concentrations of Ca (6.4 to 12.0 g/kg) and nPP (2.4 to 7.0 g/kg) were used. Diets were clustered around total densities of Ca and nPP of 12, 13.5 or 15.0 (g/kg) and within each density, a range of five Ca : nPP ratios (1.14 : 1, 1.5 : 1, 2.0 : 1, 2.75 : 1 and 4.0 : 1) were fed. Birds had free access to feed and water throughout the study. At day 28, birds were euthanised for the determination of apparent ileal mineral and amino acid digestibility. Data were modelled in R version 2.15 using a linear mixed-effects model and interrogation of the data was performed by fitting a low order polynomial function. At high Ca concentrations, increasing nPP led to an increase in the apparent digestibility of minerals. Apparent ileal digestibility of phosphorus (P) was enhanced with increasing dietary nPP up to 5.5 g/kg beyond which no improvements were found. Maximal Ca digestibility was found in diets with >8.0 g/kg Ca with concomitant low concentrations of nPP. Diets with a broader Ca : nPP ratio improved the digestibility of Ca but were deleterious to the digestibility of P. In this study, apparent digestibility of amino acids was broadly unaffected by dietary Ca and nPP concentrations. However, interactions between Ca and nPP were observed for the digestibility of glutamine, tyrosine and methionine (all P<0.001). Nitrogen digestibility showed discrete optima around 10.0 and 5.0 g/kg nPP and Na digestibility was maximised around 8 to 9.0 g/kg Ca and 4.5 to 5.4 g/kg nPP. These data show that the ratio of Ca : nPP is more influential to mineral digestibility than the absolute dietary concentration of each macro mineral.
Collapse
Affiliation(s)
- S J Wilkinson
- 1Poultry Research Foundation,The University of Sydney, Faculty of Veterinary Science,425 Werombi Road,Camden,NSW 2570,Australia
| | - E J Bradbury
- 1Poultry Research Foundation,The University of Sydney, Faculty of Veterinary Science,425 Werombi Road,Camden,NSW 2570,Australia
| | - P C Thomson
- 2Faculty of Veterinary Science,The University of Sydney,Camden,NSW 2570,Australia
| | - M R Bedford
- 3AB Vista Feed Ingredients,Marlborough,Wiltshire,SN84AN,UK
| | - A J Cowieson
- 1Poultry Research Foundation,The University of Sydney, Faculty of Veterinary Science,425 Werombi Road,Camden,NSW 2570,Australia
| |
Collapse
|
27
|
Tancharoenrat P, Ravindran V. Influence of tallow and calcium concentrations on the performance and energy and nutrient utilization in broiler starters. Poult Sci 2014; 93:1453-62. [DOI: 10.3382/ps.2013-03817] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
28
|
Influence of Dietary Calcium Concentration on the Digestion of Nutrients along the Intestinal Tract of Broiler Chickens. J Poult Sci 2014. [DOI: 10.2141/jpsa.0140022] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|