Cargando…
Influence of dietary crude protein content on fattening performance and nitrogen excretion of Holstein steers
The objective was to investigate the influence of crude protein (CP) content in a fattening diet on feed intake, body weight gain, nitrogen excretion, and carcass traits in Holstein steers. Steers (initial body weight 241 ± 26 kg) consumed feed with the following CP content: (a) 17.7% during the ear...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7507128/ https://www.ncbi.nlm.nih.gov/pubmed/32761765 http://dx.doi.org/10.1111/asj.13438 |
_version_ | 1783585166861533184 |
---|---|
author | Kamiya, Mitsuru Yamada, Tomoya Higuchi, Mikito |
author_facet | Kamiya, Mitsuru Yamada, Tomoya Higuchi, Mikito |
author_sort | Kamiya, Mitsuru |
collection | PubMed |
description | The objective was to investigate the influence of crude protein (CP) content in a fattening diet on feed intake, body weight gain, nitrogen excretion, and carcass traits in Holstein steers. Steers (initial body weight 241 ± 26 kg) consumed feed with the following CP content: (a) 17.7% during the early period (from 7 to 10 months of age) and 13.9% during the late period (from 11 to 18 months of age) (HIGH, n = 3), and (b) 16.2% during the early period and 12.2% during the late period (LOW, n = 4). The CP intake was lower in the LOW than the HIGH group. Urinary and total nitrogen excretion in the late period tended to be lower (p < .10) in the LOW than the HIGH group. However, growth performance and carcass traits were not affected by dietary CP content. Free histidine and total amino acid contents in the longissimus thoracis muscle tended to be higher (p < .10) in the HIGH than the LOW group, however, the CP contents were not affected by dietary CP content. The results of this experiment suggest that decreasing dietary CP to 16% (early period) or 12% (late period) of dry matter would reduce nitrogen excretion from Holstein fattening farms without affecting productivity. |
format | Online Article Text |
id | pubmed-7507128 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-75071282020-09-28 Influence of dietary crude protein content on fattening performance and nitrogen excretion of Holstein steers Kamiya, Mitsuru Yamada, Tomoya Higuchi, Mikito Anim Sci J Original Articles The objective was to investigate the influence of crude protein (CP) content in a fattening diet on feed intake, body weight gain, nitrogen excretion, and carcass traits in Holstein steers. Steers (initial body weight 241 ± 26 kg) consumed feed with the following CP content: (a) 17.7% during the early period (from 7 to 10 months of age) and 13.9% during the late period (from 11 to 18 months of age) (HIGH, n = 3), and (b) 16.2% during the early period and 12.2% during the late period (LOW, n = 4). The CP intake was lower in the LOW than the HIGH group. Urinary and total nitrogen excretion in the late period tended to be lower (p < .10) in the LOW than the HIGH group. However, growth performance and carcass traits were not affected by dietary CP content. Free histidine and total amino acid contents in the longissimus thoracis muscle tended to be higher (p < .10) in the HIGH than the LOW group, however, the CP contents were not affected by dietary CP content. The results of this experiment suggest that decreasing dietary CP to 16% (early period) or 12% (late period) of dry matter would reduce nitrogen excretion from Holstein fattening farms without affecting productivity. John Wiley and Sons Inc. 2020-08-05 2020 /pmc/articles/PMC7507128/ /pubmed/32761765 http://dx.doi.org/10.1111/asj.13438 Text en © 2020 The Authors. Animal Science Journal published by John Wiley & Sons Australia, Ltd on behalf of Japanese Society of Animal Science This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Articles Kamiya, Mitsuru Yamada, Tomoya Higuchi, Mikito Influence of dietary crude protein content on fattening performance and nitrogen excretion of Holstein steers |
title | Influence of dietary crude protein content on fattening performance and nitrogen excretion of Holstein steers |
title_full | Influence of dietary crude protein content on fattening performance and nitrogen excretion of Holstein steers |
title_fullStr | Influence of dietary crude protein content on fattening performance and nitrogen excretion of Holstein steers |
title_full_unstemmed | Influence of dietary crude protein content on fattening performance and nitrogen excretion of Holstein steers |
title_short | Influence of dietary crude protein content on fattening performance and nitrogen excretion of Holstein steers |
title_sort | influence of dietary crude protein content on fattening performance and nitrogen excretion of holstein steers |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7507128/ https://www.ncbi.nlm.nih.gov/pubmed/32761765 http://dx.doi.org/10.1111/asj.13438 |
work_keys_str_mv | AT kamiyamitsuru influenceofdietarycrudeproteincontentonfatteningperformanceandnitrogenexcretionofholsteinsteers AT yamadatomoya influenceofdietarycrudeproteincontentonfatteningperformanceandnitrogenexcretionofholsteinsteers AT higuchimikito influenceofdietarycrudeproteincontentonfatteningperformanceandnitrogenexcretionofholsteinsteers |