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
卷号101期号:1-3页码:199-207
文章类型Article
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.
关键词Yak Daily Live-weight Gain Apparent Digestibility Feed Conversion Efficiency- Yangtze And Yellow Rivers Headwater Region
WOS标题词Science & Technology ; Life Sciences & Biomedicine
学科领域农业科学
关键词[WOS]CARCASS CHARACTERISTICS ; GROWTH-PERFORMANCE ; ANNUAL RYEGRASS ; CATTLE ; SILAGE ; DIGESTION ; COWS ; SUPPLEMENTATION ; CONCENTRATE ; NITROGEN
收录类别SCI
语种英语
WOS研究方向Agriculture
WOS类目Agriculture, Dairy & Animal Science
WOS记录号WOS:000237945600021
引用统计
被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/1329
专题中国科学院西北高原生物研究所
作者单位1.Qinghai Acad Anim & Vet Sci, Xining 810003, Qinghai, Peoples R China
2.Chinese Acad Sci, NW Plateau Inst Biol, Xining 810003, Qinghai, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
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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,2006,101(1-3):199-207.
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,101(1-3),199-207.
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 101.1-3(2006):199-207.
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