QQ客服 官方微博 反馈留言

浏览/检索结果: 共5条，第1-5条 帮助 限定条件 学科主题：agriculture     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 A comparison of nitrogen utilization and urea metabolism between Tibetan and fine-wool sheep 会议论文 Forages and Pastures Symposium on Use of Marginal Lands and Fibrous Byproducts in Efficient Beef and Dairy Production Systems held at the Joint Annual Meeting of the Amer-Dairy-Sci-Assoc, the Amer-Soc-of Animal-Sci, and the Canadian-Soc-of-Animal-Sci, Kansas City, MO, JUL 20-24, 2014 作者:  Zhou, JW;  Mi, JD;  Titgemeyer, EC;  Guo, XS;  Ding, LM 收藏  |  浏览/下载：5/0  |  提交时间：2017/01/17 adaptation  dietary nitrogen utilization  Qinghai-Tibetan Plateau  Tibetan sheep  urea recycling   Conventional tillage increases soil microbial biomass and activity in the Loess Plateau, China 期刊论文 ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE, 2013, 卷号: 63, 期号: 6, 页码: 489-496 作者:  Guo, D;  Li, XD;  Li, XD;  Wang, J;  Fu, H 收藏  |  浏览/下载：3/0  |  提交时间：2015/11/10 cropland  grassland  metabolic quotient  soil basal respiration  soil organic carbon   Influences of dietary nitrogen and non-fiber carbohydrate levels on apparent digestibility, rumen fermentation and nitrogen utilization in growing yaks fed low quality forage based-diet 期刊论文 LIVESTOCK SCIENCE, 2012, 卷号: 147, 期号: 1-3, 页码: 139-147 作者:  Zhang, Y;  Zhou, JW;  Guo, XS;  Cui, GX;  Ding, LM 收藏  |  浏览/下载：2/0  |  提交时间：2015/11/10 Rumen fermentation  Digestibility  Protein  Non-fiber carbohydrate  Yak   Productivity and water use of alfalfa and subsequent crops in the semiarid Loess Plateau with different stand ages of alfalfa and crop sequences 期刊论文 FIELD CROPS RESEARCH, 2009, 卷号: 114, 期号: 1, 页码: 58-65 作者:  Jia, Y;  Li, FM;  Zhang, ZH;  Wang, XL;  Guo, RY 收藏  |  浏览/下载：3/0  |  提交时间：2015/12/14 Alfalfa  Legume-crop rotation  Semiarid Loess Plateau  Water use  Yield   A comparative study on urinary purine derivative excretion of yak (Bos grunniens), cattle (Bos taurus), and crossbred (Bos taurus x Bos grunniens) in the Qinghai-Tibetan plateau, China 期刊论文 JOURNAL OF ANIMAL SCIENCE, 2009, 卷号: 87, 期号: 7, 页码: 2355-2362 作者:  Wang, H;  Long, R;  Zhou, W;  Li, X;  Zhou, J 收藏  |  浏览/下载：2/0  |  提交时间：2015/11/10 allantoin  cattle  creatinine  glomerular filtration rate  Qinghai-Tibetan plateau  yak