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题名: Live-weight gain, apparent digestibility, and economic benefits of yaks fed different diets during winter on the Tibetan plateau
作者: Dong, QM; Zhao, XQ; Ma, YS; Xu, SX; Li, QY
刊名: LIVESTOCK SCIENCE
出版日期: 2006-05-01
卷号: 101, 期号:1-3, 页码:199-207
关键词: Yak ; daily live-weight gain ; apparent digestibility ; feed conversion efficiency- ; Yangtze and Yellow Rivers headwater region
学科分类: 农业科学
文章类型: Article
中文摘要: 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.
英文摘要: 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.
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Agriculture, Dairy & Animal Science
研究领域[WOS]: Agriculture
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记录号: WOS:000237945600021
Citation statistics:
内容类型: 期刊论文
URI标识: http://210.75.249.4/handle/363003/1329
Appears in Collections:中国科学院西北高原生物研究所_期刊论文

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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

Recommended Citation:
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
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