饲料粉碎粒度与蛋白质消化率的体外消化试验研究  

A Trial Study on the Relationship between Particle Size of Feed Ingredients and Digestibility of Protein in Vitro Method

作　　者：王卫国[1] 邓金明[1] 廖再生 

机构地区：[1]郑州工程学院生物工程系,450052

出　　处：《粮食与饲料工业》2000年第11期16-19,共4页Cereal & Feed Industry

摘　　要：为了初步找出不同原料不同粉碎粒度与消化率的关系 ,本试验采用胃蛋白酶 -胰蛋白酶复合处理法 ,分别对不同原料的不同粉碎粒度试样进行体外消化试验 ,测定出不同原料不同粉碎粒度的蛋白质体外消化率。试验结果表明 :5种原料 (玉米、麸皮、豆粕、棉粕、菜粕 )的消化率随粉碎粒度的减小而增大 ,而且消化率与粉碎粒度呈显著正相关 (P <0 .0 1)。但是随着粉碎粒度的减小 ,6 0与 80目之间差异不显著 (P >0 .0 5 )。A study on the relationship between the digestibility and the different grinding particle sizes of the different feed ingredients was carried out with a modified method in vitro incubation with pepsin-trypsin. The results showed that the digestibility of five ingredients(corn, wheat bran, soybean meal, cottonseed meal, rapeseed meal) increased with decreasing of the particle size, and the digestibility was directly correlated with the particle size ( P <0.01). But as the particle size decreased, the digestibility differences between the materiels through 60/80 mesh and 80/100 mesh were not significant ( P >0.05).

关 键 词：粉碎粒度 消化率 饲料 蛋白质 体外消化试验 

分 类 号：S816.32[农业科学—饲料科学]