Digestibility, nutrient balance and urinary purine derivative excretion in dry yak cows fed oat hay at different levels of intake
文献类型：期刊论文
| 作者 | Long, RJ; Dong, SK; Hu, ZZ; Shi, JJ; Dong, QM; Han, XT |
| 刊名 | livestock production science
 |
| 出版日期 | 2004-06-01 |
| 卷号 | 88期号:1-2页码:27-32 |
| 关键词 | intake level digestion purine derivatives creatinine excretion dry yak cows |
| 合作状况 | 其它 |
| 中文摘要 | a feeding trial a as conducted at the farm of qinghai academy of animal and veterinary science, xining, china during 1996 - 1997 with three dry yak cows (initial body weight 163 - 197 kg, age 5 - 6 years) by using 3 x 3 latin square design to determine the effect of levels of feed intake on digestion, nitrogen balance and purine derivative excretion in urine of yak cows. the animals were fed oat hay (nitrogen 13.5 g/kg dry matter (dm), metabolisable energy 8.3 mj/kg dm), i.e., 0.3, 0.6 and 0.9 of voluntary intake (vi). each intake treatment lasted for 17 days and the samples (feeds, faeces and urine) were collected during last 7 days of each period. the results indicate that digestibility of dietary dm, om, ndf and ash declined when intake levels increased from 0.3 to 0.9 vi [dm, from 66.1% to 59.1% (p < 0.05); om, from 68.1% to 59.9% (p < 0.05); ndf, from 62.1% to 54.3% (p < 0.05); and ash, from 33.9% to 11.8% (p < 0.05)]. around 0.10 g n/kg w-0.75 was deficient daily in yak cows at 0.3 vi, and positive n balances were observed at 0.6 and 0.9 vi. intake levels significantly (p < 0.05) affected total pd excretion in yak urine. the proportion of allantoin increased (p < 0.05) and uric acid decreased (p < 0.05) as intake level of feed increased. (c) 2004 elsevier b.v. all rights reserved. |
| 英文摘要 | a feeding trial a as conducted at the farm of qinghai academy of animal and veterinary science, xining, china during 1996 - 1997 with three dry yak cows (initial body weight 163 - 197 kg, age 5 - 6 years) by using 3 x 3 latin square design to determine the effect of levels of feed intake on digestion, nitrogen balance and purine derivative excretion in urine of yak cows. the animals were fed oat hay (nitrogen 13.5 g/kg dry matter (dm), metabolisable energy 8.3 mj/kg dm), i.e., 0.3, 0.6 and 0.9 of voluntary intake (vi). each intake treatment lasted for 17 days and the samples (feeds, faeces and urine) were collected during last 7 days of each period. the results indicate that digestibility of dietary dm, om, ndf and ash declined when intake levels increased from 0.3 to 0.9 vi [dm, from 66.1% to 59.1% (p < 0.05); om, from 68.1% to 59.9% (p < 0.05); ndf, from 62.1% to 54.3% (p < 0.05); and ash, from 33.9% to 11.8% (p < 0.05)]. around 0.10 g n/kg w-0.75 was deficient daily in yak cows at 0.3 vi, and positive n balances were observed at 0.6 and 0.9 vi. intake levels significantly (p < 0.05) affected total pd excretion in yak urine. the proportion of allantoin increased (p < 0.05) and uric acid decreased (p < 0.05) as intake level of feed increased. (c) 2004 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; life sciences & biomedicine |
| 学科主题 | 农业科学 |
| 类目[WOS] | agriculture, dairy & animal science |
| 研究领域[WOS] | agriculture |
| 关键词[WOS] | feed-intake ; sheep ; ruminants ; cattle ; performance ; digestion ; nitrogen ; plasma ; steers |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000222049700004 |
| 公开日期 | 2009-12-09 |
| 源URL | [http://ir.nwipb.ac.cn/handle/363003/1395]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 作者单位 | 1.Beijing Normal Univ, Inst Environm Sci, Beijing 100875, Peoples R China 2.Chinese Acad Sci, NW Inst Plateau Biol, Xining 810018, Peoples R China 3.Gansu Agr Univ, Grassland Sci Coll, Lanzhou 730070, Peoples R China 4.Qinghai Acad Anim & Vet Sci, Xining 810003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Long, RJ,Dong, SK,Hu, ZZ,et al. Digestibility, nutrient balance and urinary purine derivative excretion in dry yak cows fed oat hay at different levels of intake[J]. livestock production science,2004,88(1-2):27-32. |
| APA | Long, RJ,Dong, SK,Hu, ZZ,Shi, JJ,Dong, QM,&Han, XT.(2004).Digestibility, nutrient balance and urinary purine derivative excretion in dry yak cows fed oat hay at different levels of intake.livestock production science,88(1-2),27-32. |
| MLA | Long, RJ,et al."Digestibility, nutrient balance and urinary purine derivative excretion in dry yak cows fed oat hay at different levels of intake".livestock production science 88.1-2(2004):27-32. |
入库方式： OAI收割
来源：西北高原生物研究所
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