Nutritional Evaluation of Pennisetum Centrasiaticum in the Middle Reaches of the Yarlung Zangbo River
In order to clarify the nutritive value of different components of Pennisetum centrasiaticum Griseb.,P.centrasiaticum was collected from 21 plots in the middle reaches of the Yarlung Zangbo River during the field in-vestigation and the crude protein,ether extract,crude fiber and ash content of the vegetative branches,reproduc-tion branches and whole plant of P.centrasiaticum were analyzed in the laboratory.The results showed that the content of crude protein(12.11％),ether extract(18.03 g/kg)and ash(11.74％)were the highest in the vegetative branches,and the content of crude fiber(380.34 g/kg)was the highest in the reproductive branches of P.centrasi-aticum.The TOPSIS analysis method was used to screen the nutrient content of P.centrasiaticum at different ar-eas in the middle reaches of the Yarlung Zangbo River.In terms of nutritional value,the top five germplasm re-sources are Nyalam(Ci=0.61),Tingkye(Ci=0.58),Tingri(Ci=0.57),Gyantse(Ci=0.56)and Saga(Ci=0.54).The result can provide excellent germplasm resources for subsequent forage selection and breeding,which could pro-mote the ecology protection of the Yarlung Zangbo River Basin and alleviate the shortage of forage grass for yak and sheep in Tibetan areas.
Pennisetum centrasiaticumreproductive branchesvegetative branchesnutritive valueYarlung Zangbo River
NETL
NSTL
万方数据
