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Possible role of available phosphorus in potentiating the use of low-protein diets for broiler chicken production

A total of 945 male Ross 308 broiler chicks were used in a growth study to explore the interaction between dietary crude protein concentration and available phosphorus. Nine experimental treatments were constructed factorially by offering low, medium, or standard protein concentrations without or wi...

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Autores principales: Cowieson, A.J., Perez-Maldonado, R., Kumar, A., Toghyani, M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7705028/
https://www.ncbi.nlm.nih.gov/pubmed/33248611
http://dx.doi.org/10.1016/j.psj.2020.09.045
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author Cowieson, A.J.
Perez-Maldonado, R.
Kumar, A.
Toghyani, M.
author_facet Cowieson, A.J.
Perez-Maldonado, R.
Kumar, A.
Toghyani, M.
author_sort Cowieson, A.J.
collection PubMed
description A total of 945 male Ross 308 broiler chicks were used in a growth study to explore the interaction between dietary crude protein concentration and available phosphorus. Nine experimental treatments were constructed factorially by offering low, medium, or standard protein concentrations without or with low, standard, or high available phosphorus. Diets were based on corn, wheat, and soybean meal and all nutrients other than protein/amino acids and available phosphorus were maintained at or above breeder guidelines. Additional synthetic amino acids were used in the diets with low protein concentration in attempt to maintain digestible amino acid supply. Diets were offered to 7 replicate pens of 15 chicks per pen from day 8 to 35. Growth performance was measured during the grower (day 8–24) and finisher (day 25–35) periods. On day 35 carcass composition was determined, blood was drawn for various biochemical measurements and the tibia was excised for mechanical and compositional analyses. Birds that received the low-protein diet had lower terminal body weight and higher feed conversion ratio compared with those that received diets with adequate crude protein content. However, addition of available phosphorus to the low-protein diet resulted in significant reductions in weight-corrected feed conversion that were not evident in the diet with adequate protein content. Bone architecture was only moderately influenced by dietary treatment but birds that ingested the diets containing low and medium protein concentrations had relatively heavier abdominal fat pad weight. Blood biochemistry, especially ammonia, uric acid, and phosphorus, was influenced by both dietary protein and available phosphorus and trends suggested that both axes are involved in protein accretion and catabolism. It can be concluded that performance losses associated with feeding low protein diets to broiler chickens may be partially restored by additional available phosphorus. The implications for use of exogenous enzymes such as protease and phytase and protein nutrition per se warrants further examination.
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spelling pubmed-77050282020-12-08 Possible role of available phosphorus in potentiating the use of low-protein diets for broiler chicken production Cowieson, A.J. Perez-Maldonado, R. Kumar, A. Toghyani, M. Poult Sci Metabolism and Nutrition A total of 945 male Ross 308 broiler chicks were used in a growth study to explore the interaction between dietary crude protein concentration and available phosphorus. Nine experimental treatments were constructed factorially by offering low, medium, or standard protein concentrations without or with low, standard, or high available phosphorus. Diets were based on corn, wheat, and soybean meal and all nutrients other than protein/amino acids and available phosphorus were maintained at or above breeder guidelines. Additional synthetic amino acids were used in the diets with low protein concentration in attempt to maintain digestible amino acid supply. Diets were offered to 7 replicate pens of 15 chicks per pen from day 8 to 35. Growth performance was measured during the grower (day 8–24) and finisher (day 25–35) periods. On day 35 carcass composition was determined, blood was drawn for various biochemical measurements and the tibia was excised for mechanical and compositional analyses. Birds that received the low-protein diet had lower terminal body weight and higher feed conversion ratio compared with those that received diets with adequate crude protein content. However, addition of available phosphorus to the low-protein diet resulted in significant reductions in weight-corrected feed conversion that were not evident in the diet with adequate protein content. Bone architecture was only moderately influenced by dietary treatment but birds that ingested the diets containing low and medium protein concentrations had relatively heavier abdominal fat pad weight. Blood biochemistry, especially ammonia, uric acid, and phosphorus, was influenced by both dietary protein and available phosphorus and trends suggested that both axes are involved in protein accretion and catabolism. It can be concluded that performance losses associated with feeding low protein diets to broiler chickens may be partially restored by additional available phosphorus. The implications for use of exogenous enzymes such as protease and phytase and protein nutrition per se warrants further examination. Elsevier 2020-09-29 /pmc/articles/PMC7705028/ /pubmed/33248611 http://dx.doi.org/10.1016/j.psj.2020.09.045 Text en © 2020 Published by Elsevier Inc. on behalf of Poultry Science Association Inc. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Metabolism and Nutrition
Cowieson, A.J.
Perez-Maldonado, R.
Kumar, A.
Toghyani, M.
Possible role of available phosphorus in potentiating the use of low-protein diets for broiler chicken production
title Possible role of available phosphorus in potentiating the use of low-protein diets for broiler chicken production
title_full Possible role of available phosphorus in potentiating the use of low-protein diets for broiler chicken production
title_fullStr Possible role of available phosphorus in potentiating the use of low-protein diets for broiler chicken production
title_full_unstemmed Possible role of available phosphorus in potentiating the use of low-protein diets for broiler chicken production
title_short Possible role of available phosphorus in potentiating the use of low-protein diets for broiler chicken production
title_sort possible role of available phosphorus in potentiating the use of low-protein diets for broiler chicken production
topic Metabolism and Nutrition
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7705028/
https://www.ncbi.nlm.nih.gov/pubmed/33248611
http://dx.doi.org/10.1016/j.psj.2020.09.045
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