10种作物秸秆的营养品质分析

饲草作物秸秆是黄土高原农区重要的饲料来源,但是适宜饲草作物秸秆的选择是该地区畜牧业发展的重要工作。本研究应用主成分和聚类分析法以吸附水、粗蛋白、粗脂肪、粗纤维、中性和酸性洗涤纤维、灰分、无氮浸出物、碳水化合物和有机质消化率为指标构建综合评价模型,对静宁地区小麦(Triticum aestivum)、玉米(Zea mays)、高梁(Sorghum bicolor)、青稞(Avena nuda)、燕麦(A. sativa)、土豆(Solanum tuberosum)、谷子(Setaria italica)、糜子(Panicum miliaceum)、大豆(Glycine max)和豌豆(Pisum sativum)10种饲草作物秸秆进行了综合评价。结果表明,秸秆营养品质从高到低的次序为糜子、大豆、豌豆、谷子、青稞、燕麦、高粱、土豆、玉米、小麦。聚类分析的结果为糜子、大豆、豌豆和燕麦为一类,谷子和土豆为一类,小麦、玉米和高粱为一类,青稞单独为一类。

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.