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Graded methionine dietary inclusions influence growth performance and apparent ileal amino acid digestibility coefficients and disappearance rates in broiler chickens
Graded quantities of 1.38, 2.76 and 4.14 g/kg L-methionine were included in a control diet formulated to contain 3.07 g/kg digestible methionine. Each of the 4 dietary treatments was offered to 6 replicate cages (initially 8 birds per cage) from 1 to 21 d post–hatch. The parameters assessed included...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
KeAi Publishing
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8683676/ https://www.ncbi.nlm.nih.gov/pubmed/34977386 http://dx.doi.org/10.1016/j.aninu.2021.06.017 |
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author | Macelline, Shemil P. Chrystal, Peter V. McQuade, Leon R. Mclnerney, Bernard V. Kim, Yangsu Bao, Yumin Selle, Peter H. Liu, Sonia Y. |
author_facet | Macelline, Shemil P. Chrystal, Peter V. McQuade, Leon R. Mclnerney, Bernard V. Kim, Yangsu Bao, Yumin Selle, Peter H. Liu, Sonia Y. |
author_sort | Macelline, Shemil P. |
collection | PubMed |
description | Graded quantities of 1.38, 2.76 and 4.14 g/kg L-methionine were included in a control diet formulated to contain 3.07 g/kg digestible methionine. Each of the 4 dietary treatments was offered to 6 replicate cages (initially 8 birds per cage) from 1 to 21 d post–hatch. The parameters assessed included growth performance, nutrient utilisation (apparent metabolizable energy [AME], AME:GE ratios, N retention, N-corrected apparent metabolizable energy [AMEn]), apparent digestibility coefficients and disappearance rates of amino acids in the distal ileum. They also included free amino concentrations in systemic plasma (brachial vein) at 20 d post–hatch and in hepatic tissue at 14 and 21 d post–hatch. Graded L-methionine inclusions quadratically influenced weight gain (r = 0.688; P = 0.001) and FCR (r = 0.780; P < 0.001). It may be deduced from the quadratic regressions that 3.43 g/kg L-methionine supported maximum weight gain of 1,036 g/kg and 3.50 g/kg L-methionine minimum FCR of 1.193, from 1 to 21 d post–hatch. The control diet contained specified levels of 3.07 g/kg digestible methionine and 13.0 g/kg digestible lysine. Thus, an inclusion of 3.465 g/kg L-methionine corresponded to a total of 6.535 g/kg methionine or a methionine-to-lysine ratio of 50.3, which is higher than standard recommendations. The implications of this and other outcomes of the present study are reported and discussed. |
format | Online Article Text |
id | pubmed-8683676 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | KeAi Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-86836762021-12-30 Graded methionine dietary inclusions influence growth performance and apparent ileal amino acid digestibility coefficients and disappearance rates in broiler chickens Macelline, Shemil P. Chrystal, Peter V. McQuade, Leon R. Mclnerney, Bernard V. Kim, Yangsu Bao, Yumin Selle, Peter H. Liu, Sonia Y. Anim Nutr Original Research Article Graded quantities of 1.38, 2.76 and 4.14 g/kg L-methionine were included in a control diet formulated to contain 3.07 g/kg digestible methionine. Each of the 4 dietary treatments was offered to 6 replicate cages (initially 8 birds per cage) from 1 to 21 d post–hatch. The parameters assessed included growth performance, nutrient utilisation (apparent metabolizable energy [AME], AME:GE ratios, N retention, N-corrected apparent metabolizable energy [AMEn]), apparent digestibility coefficients and disappearance rates of amino acids in the distal ileum. They also included free amino concentrations in systemic plasma (brachial vein) at 20 d post–hatch and in hepatic tissue at 14 and 21 d post–hatch. Graded L-methionine inclusions quadratically influenced weight gain (r = 0.688; P = 0.001) and FCR (r = 0.780; P < 0.001). It may be deduced from the quadratic regressions that 3.43 g/kg L-methionine supported maximum weight gain of 1,036 g/kg and 3.50 g/kg L-methionine minimum FCR of 1.193, from 1 to 21 d post–hatch. The control diet contained specified levels of 3.07 g/kg digestible methionine and 13.0 g/kg digestible lysine. Thus, an inclusion of 3.465 g/kg L-methionine corresponded to a total of 6.535 g/kg methionine or a methionine-to-lysine ratio of 50.3, which is higher than standard recommendations. The implications of this and other outcomes of the present study are reported and discussed. KeAi Publishing 2021-10-18 /pmc/articles/PMC8683676/ /pubmed/34977386 http://dx.doi.org/10.1016/j.aninu.2021.06.017 Text en © 2021 Chinese Association of Animal Science and Veterinary Medicine. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. https://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 | Original Research Article Macelline, Shemil P. Chrystal, Peter V. McQuade, Leon R. Mclnerney, Bernard V. Kim, Yangsu Bao, Yumin Selle, Peter H. Liu, Sonia Y. Graded methionine dietary inclusions influence growth performance and apparent ileal amino acid digestibility coefficients and disappearance rates in broiler chickens |
title | Graded methionine dietary inclusions influence growth performance and apparent ileal amino acid digestibility coefficients and disappearance rates in broiler chickens |
title_full | Graded methionine dietary inclusions influence growth performance and apparent ileal amino acid digestibility coefficients and disappearance rates in broiler chickens |
title_fullStr | Graded methionine dietary inclusions influence growth performance and apparent ileal amino acid digestibility coefficients and disappearance rates in broiler chickens |
title_full_unstemmed | Graded methionine dietary inclusions influence growth performance and apparent ileal amino acid digestibility coefficients and disappearance rates in broiler chickens |
title_short | Graded methionine dietary inclusions influence growth performance and apparent ileal amino acid digestibility coefficients and disappearance rates in broiler chickens |
title_sort | graded methionine dietary inclusions influence growth performance and apparent ileal amino acid digestibility coefficients and disappearance rates in broiler chickens |
topic | Original Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8683676/ https://www.ncbi.nlm.nih.gov/pubmed/34977386 http://dx.doi.org/10.1016/j.aninu.2021.06.017 |
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