Analysis of nutritive value of 10 forages straw

Forage straw is the main feeding source in Loess Plateau, however, optimal selection of forage straws have become important work of establishment and development of animal husbandry. Principal component analysis and cluster analysis were employed to comprehensively evaluate the quality of forages straw in the Loess Plateau with 10 indices including available water (AW), crude protein (CP), ether extract (EE), crude fiber (CF), acid detergent fiber (ADF), neutral detergent fiber (NDF), ash (ASH), nitrogen free extract (NFE), water soluble carbohydrates (WSC), organic matter digestibility (OMD). The order of principal component analysis evaluation of forages straw quality was as following: milletsoybeanpeassmall millethighland barleyoatsorghumpotatomaizewheat.The results of cluster analysis were millet, soybean,peas and oat clustered in a group, small millet and potato clustered in a group, wheat, maize and sorghum clustered in another group, and highland barley alone clustered a group.