An investigation of nutrition components and types in Tibet main crop straws and pastures

作者：Qin Yu, LI Xiao-zhong, Wenqing Jiang, Tian FaYi, Zhou Zhi-yu, Nan Wang, Tao Wang · 发表于：Acta Pratacultural Science · 年份：2010 · 被引用次数：3 · 研究领域：Rangeland Management and Livestock Ecology

The nutrition contents of crop straws and seeds(the main source of roughage and concentrate respectively)for livestock as well as 57kinds of natural grassland and cultivated herbage from Xigaze and Shannan region were analyzed.The nutritive types of crop straw were carbon and carbon-nitrogen types with low crude protein(CP)and Ash(ASH)content,but high crude fiber(CF),neutral detergent fiber(NDF)and acid detergent fiber(ADF).For crop seeds,the nutrition value of rapeseed meal and peas were both higher than hull-less barley.However,the nutritive types of Gramineae and Leguminosae were nitrogen and nitrogen-carbon types with high CP content and low CF.There were 13kinds of Graminaceous forage species with a CP content more than 20%,and in one acid-resistant grass(Bromus pumpellianus)it was up to 30.72%.Nine kinds of legume were studied.The CP content of chickpea(Cicer arietinum)was up to 27.46%,but CF was only 18.91%,and ASH was 9.30%.French spinach(Spinacia oleracea),one of the Chenopodiaceae,was an Ash-nitrogen nutritive type with a crude protein content of 20.17%,ASH of 20.15%,and CF of only 12.67%.The CF contents of these 22pastures were less than 30%,nevertheless the ASH content ranged from 6.24%to 10.43%.