Live-weight gain, apparent digestibility, and economic benefits of yaks fed different diets during winter on the Tibetan plateau

NWIPB OpenIR

	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 ; 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
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/363003/25357
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).