Comprehensive Evaluation of nutritive value of native grass of main grassland type in Hainan Prefecture of the source region of the Yangtze, Yellow and Lancangjiang River
In this study, comprehensive nutritional value, the theoretical yield carrying capacity, nutritional carrying capacity of 18 kinds of the main types of native grassland herbage were researched in Hainan Prefecture of the Origin of Three Rivers. The results were as follows: (1) The range of yield of fresh grass ,dry matter, edible grass and the production of DM were 91.33g/m2 ～870.89g/m2, 36.13g/m2～209.99 g/m2,4.64 g/m2～ 385.32g/m232.66g/m2～181.91g/m2, respectively; (2) The conventional nutrients of 18 native grass pasture types indicated that the content of CP, EE, ADF, Ash, Ca and P were 8.59%～13.57%、 1.47%～4.23%、 25.54%～40.84%、 3.23%～8.73%、 0.11%～0.78%、 0.05%～ 0.26%, respectively. The ratio of Ca/P was0.45: 1～ 6.06: 1, and the average content of conventional nutrients were 11.28%、 2.63%、 31.15%、 5.53%、 0.28%、 0.13%, respectively. The average ratio of Ca /P was 2:1; (3) After fermentation of 18 types of native grass pastures in vitro, 48 h gas production, dry matter digestibility were47.26 ml～71.76 ml、 51.14%～73.09%, based on the content of CP and EE, the values of OMD, DE and ME estimated were 58.26%～77.14%、 9.76 MJ/kg～ 13.48MJ/kg 和 7.90MJ/kg～11.52MJ/kg; (4) Comprehensive evaluation of nutritive value of native grass of main pasture types: EDDM, DE, ME, CP, EE, ADF, Ash, Ca and P were 24.66 g/m2～144.82 g/m2, 0.42 MJ/m2～1.97 MJ/m2, 0.36 MJ/m2～1.61 MJ/m2, 3.63 g/m2～19.95 g/m2,1.03g/m2～6.50 g/m2,10.41 g/m2～75.41 g/m2,1.26 g/m2～13.42g/m2, 0.06 g/m2～0.80 g/m2,0.02g/m2～0.24 g/m2,respectively; (5) Comparative production carrying capacity and nutritional carrying capacity, the latter are much larger than the former. In the actual use of the grass, we should combine with two kinds of calculation methods to evaluate the carrying capacity of native grass, which will help determine a more reasonable pasture carrying capacity and effectively prevent degradation of natural grassland resources.
Hao Li-zhuang Lin Li Liu Shu-jie Wang Wan-bang Cui Zhan-hong Chai Sha-tuo Zhang Xiao-wei Zhao Yue-ping
State Key Laboratory Cultivation Base of Plateau Grazing Animal Nutrition and Ecology of Qinghai Pro Key Laboratory of Plateau Grazing Animal Nutrition and Feed Science of Qinghai Province, Xining 8100 Qinghai Plateau Yak Research Center, Xining 810016, Qinghai, China The Academy of Animal and Veterinary Sciences of Qinghai University, Xining 810016, Qinghai, China Qinghai Academy of Animal Science and Veterinary Medicine, Xining 810016, Qinghai, China
国际会议
The Workshop of Sustainable Grassland Management in China and Australia(中国--澳大利亚可持续性草地管理研讨会)
乌鲁木齐
英文
31-32
2011-08-01（万方平台首次上网日期，不代表论文的发表时间）