- Volume 31 Issue 10
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Effect of increased dietary crude protein levels on production performance, nitrogen utilisation, blood metabolites and ruminal fermentation of Holstein bulls
- Xia, Chuanqi (State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University) ;
- Rahman, Muhammad Aziz Ur (State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University) ;
- Yang, He (State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University) ;
- Shao, Taoqi (State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University) ;
- Qiu, Qinghua (State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University) ;
- Su, Huawei (State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University) ;
- Cao, Binghai (State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University)
- Received : 2018.02.11
- Accepted : 2018.05.02
- Published : 2018.10.01
Objective: This study investigated the effect of dietary crude protein (CP) supplementation on nutrient intake, nitrogen (N) utilisation, blood metabolites, ruminal fermentation and growth performance of young Holstein bulls. Methods: Twenty-one young bulls weighing
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