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 |
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 | |
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 |
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,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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