Rumen bacteria and feed efficiency of beef cattle fed diets with different protein content
| العنوان: | Rumen bacteria and feed efficiency of beef cattle fed diets with different protein content |
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| المؤلفون: | M. C. Parra, D.F. Costa, S. J. Meale, L. F. P. Silva |
| المصدر: | Animal Production Science. 62:1029-1039 |
| بيانات النشر: | CSIRO Publishing, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Animal Science and Zoology, Food Science |
| الوصف: | Context Beef cattle feed efficiency is challenged in northern Australian production systems due to the limited dietary protein, leading to changes in rumen bacterial populations and fermentation outcomes. Aims Two types of diets with different dietary protein contents were used to evaluate changes in rumen bacterial composition and diversity, aiming to correlate rumen bacterial populations with feed and rumen efficiency parameters. Methods In total, 90 Brahman steers (341 ± 45 kg BW) were selected for this trial, but rumen fluid was collected from 85 Brahman steers, at 0 and 4 h after feeding, during a feed-efficiency trial. The steers were fed with a low-protein diet, including 70% rumen-degradable protein and 8.8% crude protein (CP) for 60 days, followed by a high-protein diet for the same period (13.5% CP). Liveweight and dry-matter intake measurements, as well as urine, faeces and rumen fluid samples, were collected to determine feed and rumen efficiency, and ruminal bacteria composition. Steers were clustered into groups using principal component analysis and Ward’s hierarchical method, and differences in feed-efficiency parameters among clusters were compared. Key results Rumen bacterial composition differed between diets (P |
| تدمد: | 1836-5787 1836-0939 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::2fcf5c375f356f35cabd8cfd68693d2d https://doi.org/10.1071/an21508 |
| رقم الأكسشن: | edsair.doi...........2fcf5c375f356f35cabd8cfd68693d2d |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18365787 18360939 |
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