Knowledge Management System of Northwest Institute of Plateau Biology, CAS
Live-weight gain, apparent digestibility, and economic benefits of yaks fed different diets during winter on the Tibetan plateau | |
Dong, QM ; Zhao, XQ ; Ma, YS ; Xu, SX ; Li, QY | |
2006-05-01 | |
发表期刊 | LIVESTOCK SCIENCE
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摘要 | Our goal was to determine the effect of diets with different crude protein (CP) contents and metabolizable energy (W) levels on daily live-weight gain, apparent digestibility, and economic benefit of feedlot yaks on the Tibetan plateau during winter. Yaks were either 2- or 3-years old and randomly selected from the same herd. The 3-year-olds were placed into one of two experimental groups (A and B) and a control (CK1), and the two-year-olds were placed into one of three experimental groups (C, D and E) and a control (CK2) (N per group = 5). Yak in the control groups were allow graze freely, while those in the experimental groups yaks were fed diets higher in contains crude protein and metabolizable energy through a winter period inside a warming shed. Results indicated that live-weight gain of treatment groups was higher than their respective controls during experiment, and that daily live-weight gain of every 10 days among different treatments was significant difference (P < 0.05). In addition, apparent digestibility of different diets was linearly and positively related to feedlotting time, and feed conversion efficiency for A, C, D and E groups was quadratically related to feedlotting time (P < 0.01), however, feed conversion efficiency for B group was linearly and positively related to feedlotting time (P < 0.05). The economic benefit was 1.15 for A, 1.89 for B, 1.16 for C, 1.54 for D, and 4,52 for E. (c) 2005 Elsevier B.V. All rights reserved.; Our goal was to determine the effect of diets with different crude protein (CP) contents and metabolizable energy (W) levels on daily live-weight gain, apparent digestibility, and economic benefit of feedlot yaks on the Tibetan plateau during winter. Yaks were either 2- or 3-years old and randomly selected from the same herd. The 3-year-olds were placed into one of two experimental groups (A and B) and a control (CK1), and the two-year-olds were placed into one of three experimental groups (C, D and E) and a control (CK2) (N per group = 5). Yak in the control groups were allow graze freely, while those in the experimental groups yaks were fed diets higher in contains crude protein and metabolizable energy through a winter period inside a warming shed. Results indicated that live-weight gain of treatment groups was higher than their respective controls during experiment, and that daily live-weight gain of every 10 days among different treatments was significant difference (P < 0.05). In addition, apparent digestibility of different diets was linearly and positively related to feedlotting time, and feed conversion efficiency for A, C, D and E groups was quadratically related to feedlotting time (P < 0.01), however, feed conversion efficiency for B group was linearly and positively related to feedlotting time (P < 0.05). The economic benefit was 1.15 for A, 1.89 for B, 1.16 for C, 1.54 for D, and 4,52 for E. (c) 2005 Elsevier B.V. All rights reserved. |
文献类型 | 期刊论文 |
条目标识符 | http://210.75.249.4/handle/363003/40645 |
专题 | 中国科学院西北高原生物研究所 |
推荐引用方式 GB/T 7714 | Dong, QM,Zhao, XQ,Ma, YS,et al. Live-weight gain, apparent digestibility, and economic benefits of yaks fed different diets during winter on the Tibetan plateau[J]. LIVESTOCK SCIENCE, Dong QM, Zhao XQ, Ma YS, Xu SX, Li QY.Live-weight gain, apparent digestibility, and economic benefits of yaks fed different diets during winter on the Tibetan plateau. LIVESTOCK SCIENCE,2006,101(1-3):199-207,2006. |
APA | Dong, QM,Zhao, XQ,Ma, YS,Xu, SX,&Li, QY.(2006).Live-weight gain, apparent digestibility, and economic benefits of yaks fed different diets during winter on the Tibetan plateau.LIVESTOCK SCIENCE. |
MLA | Dong, QM,et al."Live-weight gain, apparent digestibility, and economic benefits of yaks fed different diets during winter on the Tibetan plateau".LIVESTOCK SCIENCE (2006). |
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