An investigation into the influence of age on the standardized amino acid digestibility of wheat and sorghum in broilers
ABSTRACT: Standardized ileal digestibility coefficients (SIDC) of nitrogen (N) and amino acids (AA) in wheat and sorghum at 6 different ages (d 7, 14, 21, 28, 35, and 42) of broilers were determined. Two assay diets were formulated to contain 93.8% of each grain as the sole source of AA in the diet....
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doaj-a1363e5a903b4264bb6765a198125d552021-10-09T04:35:17ZengElsevierPoultry Science0032-57912021-11-0110011101466An investigation into the influence of age on the standardized amino acid digestibility of wheat and sorghum in broilersM. Barua0M.R. Abdollahi1F. Zaefarian2T.J. Wester3C.K. Girish4P.V. Chrystal5V. Ravindran6Monogastric Research Centre, School of Agriculture and Environment, Massey University, Palmerston North 4442, New Zealand; Department of Animal Science and Nutrition, Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Khulshi, Chattogram 4225, Bangladesh; Corresponding author:Monogastric Research Centre, School of Agriculture and Environment, Massey University, Palmerston North 4442, New ZealandMonogastric Research Centre, School of Agriculture and Environment, Massey University, Palmerston North 4442, New ZealandMonogastric Research Centre, School of Agriculture and Environment, Massey University, Palmerston North 4442, New ZealandNutrition and Care, Animal Nutrition, Evonik (SEA) Pte. Ltd, 609927 SingaporeComplete Feed Solutions, Howick 2145, Auckland, New ZealandMonogastric Research Centre, School of Agriculture and Environment, Massey University, Palmerston North 4442, New ZealandABSTRACT: Standardized ileal digestibility coefficients (SIDC) of nitrogen (N) and amino acids (AA) in wheat and sorghum at 6 different ages (d 7, 14, 21, 28, 35, and 42) of broilers were determined. Two assay diets were formulated to contain 93.8% of each grain as the sole source of AA in the diet. Titanium dioxide (0.5%) was added as an indigestible marker. Each assay diet was fed to 6 replicate cages housing 14 (d 7), 12 (d 14), 10 (d 21), 8 (d 28), 8 (d 35), and 6 (d 42) birds per cage for 4 d prior to ileal digesta collection. The apparent ileal digestibility coefficients (AIDC) were standardized by using the age-appropriate basal endogenous AA losses. In the case of wheat, AIDC of N and all AA increased (linear or quadratic, P < 0.05 to 0.001) with advancing age. No age effect was noticed on the SIDC of N, average of indispensable (IAA) and dispensable AA (DAA), though the average of total AA (TAA) tended (linear, P = 0.09) to increase as birds grew older. In sorghum, the AIDC of N, average of IAA and DAA were unaffected (P > 0.05) by age. The SIDC of N, average SIDC of IAA, DAA and TAA were higher at d 7, reduced at d 14 and then plateaued. Among the IAA, the SIDC of Arg, His, Ile, Leu, Lys, Thr, Val, and the SIDC of all individual DAA (except Cys) decreased with age (linear or quadratic, P < 0.05 to 0.001) with higher values at d 7. The higher SIDC values determined at d 7 were due to higher EAA losses during wk 1. The results showed that broiler age influences AA digestibility and this may need be considered in practical feed formulations. The age effect is variable depending on the grain type and specific AA.http://www.sciencedirect.com/science/article/pii/S0032579121004892ageamino acidbroilersorghumwheat |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
M. Barua M.R. Abdollahi F. Zaefarian T.J. Wester C.K. Girish P.V. Chrystal V. Ravindran |
spellingShingle |
M. Barua M.R. Abdollahi F. Zaefarian T.J. Wester C.K. Girish P.V. Chrystal V. Ravindran An investigation into the influence of age on the standardized amino acid digestibility of wheat and sorghum in broilers Poultry Science age amino acid broiler sorghum wheat |
author_facet |
M. Barua M.R. Abdollahi F. Zaefarian T.J. Wester C.K. Girish P.V. Chrystal V. Ravindran |
author_sort |
M. Barua |
title |
An investigation into the influence of age on the standardized amino acid digestibility of wheat and sorghum in broilers |
title_short |
An investigation into the influence of age on the standardized amino acid digestibility of wheat and sorghum in broilers |
title_full |
An investigation into the influence of age on the standardized amino acid digestibility of wheat and sorghum in broilers |
title_fullStr |
An investigation into the influence of age on the standardized amino acid digestibility of wheat and sorghum in broilers |
title_full_unstemmed |
An investigation into the influence of age on the standardized amino acid digestibility of wheat and sorghum in broilers |
title_sort |
investigation into the influence of age on the standardized amino acid digestibility of wheat and sorghum in broilers |
publisher |
Elsevier |
series |
Poultry Science |
issn |
0032-5791 |
publishDate |
2021-11-01 |
description |
ABSTRACT: Standardized ileal digestibility coefficients (SIDC) of nitrogen (N) and amino acids (AA) in wheat and sorghum at 6 different ages (d 7, 14, 21, 28, 35, and 42) of broilers were determined. Two assay diets were formulated to contain 93.8% of each grain as the sole source of AA in the diet. Titanium dioxide (0.5%) was added as an indigestible marker. Each assay diet was fed to 6 replicate cages housing 14 (d 7), 12 (d 14), 10 (d 21), 8 (d 28), 8 (d 35), and 6 (d 42) birds per cage for 4 d prior to ileal digesta collection. The apparent ileal digestibility coefficients (AIDC) were standardized by using the age-appropriate basal endogenous AA losses. In the case of wheat, AIDC of N and all AA increased (linear or quadratic, P < 0.05 to 0.001) with advancing age. No age effect was noticed on the SIDC of N, average of indispensable (IAA) and dispensable AA (DAA), though the average of total AA (TAA) tended (linear, P = 0.09) to increase as birds grew older. In sorghum, the AIDC of N, average of IAA and DAA were unaffected (P > 0.05) by age. The SIDC of N, average SIDC of IAA, DAA and TAA were higher at d 7, reduced at d 14 and then plateaued. Among the IAA, the SIDC of Arg, His, Ile, Leu, Lys, Thr, Val, and the SIDC of all individual DAA (except Cys) decreased with age (linear or quadratic, P < 0.05 to 0.001) with higher values at d 7. The higher SIDC values determined at d 7 were due to higher EAA losses during wk 1. The results showed that broiler age influences AA digestibility and this may need be considered in practical feed formulations. The age effect is variable depending on the grain type and specific AA. |
topic |
age amino acid broiler sorghum wheat |
url |
http://www.sciencedirect.com/science/article/pii/S0032579121004892 |
work_keys_str_mv |
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