膨化微贮玉米秸秆对肉牛生产性能及血液生化指标的影响

选用体质量相近的(354.83±16.11)kg西门塔尔杂交母牛18头,随机分为3组,每组6头。3组试验动物饲粮的精料相同,粗料比为膨化微贮、黄贮、干玉米秸秆。结果表明:(1)膨化微贮玉米秸秆组的日增重显著大于黄贮、干玉米秸秆组(P<0.05),且黄贮与干玉米秸秆组之间无显著性差异(P>0.05)。膨化微贮玉米秸秆组的干物质采食量极显著大于黄贮组,黄贮组极显著大于干玉米秸秆组(P<0.01)。(2)各组肉牛血清中总蛋白(TP)、球蛋白(GLB)、葡萄糖(GLU)、谷丙转氨酶(ALT)、总抗氧化能力(T-AOC)、超氧化物歧化酶(SOD)、丙二醛(MDA)含量无显著性差异(P>0.05)。膨化微贮玉米秸秆组的白蛋白(ALB)含量显著高于干玉米秸秆组(P<0.05),黄贮和膨化微贮玉米秸秆组的谷草转氨酶(AST)含量极显著高于干玉米秸秆组(P<0.01)。结果表明,膨化微贮玉米秸秆组肉牛的生产性能高于黄贮和干玉米秸秆组,且对血液中大多数的生理指标无显著影响。

Effect of expansional and microbial corn stover on production performance and blood biochemical indices of beef cattle

The purpose of this study was to investigate effects of expansional and microbial corn stover on production performance and blood biochemical indices of beef cattle.Eighteen Simmental hybrid cows with similar weight(354.83±16.11)kg were randomly divided into three groups of six each.The three groups of experimental animals were fed with the same concentrated feed,and the roughage were expansional and microbial corn stover,yellow corn silage,corn stover,respectively.The results showed as follows:(1)The average daily gain of expanded microbial corn stover group was significantly higher than yellow corn silage group and corn stover group(P<0.05),and there was no significant difference between yellow corn silage group and corn straw group(P>0.05).The dry matter intake of expansional and microbial corn stover group was significantly higher than yellow corn silage group,and yellow corn silage group was significantly higher than corn stover group(P<0.01).(2)No significant differences in total protein(TP),globulin(GLB),glucose(GLU),alanine transaminase(ALT),total antioxidant capacity(T-AOC),superoxide dismutase(SOD),malondialdehyde(MDA)content were found among three groups(P>0.05).The albumin(ALB)content in the expansional and microbial corn stover group was significantly higher than that in the corn stover group(P<0.05).And the glutamic-pyruvic transaminase(AST)content in the expansional and microbial corn stover group and yellow corn silage group was significantly higher than that in the corn stover group(P<0.01).In conclusion,expansional and microbial corn stover could increase the production performance of beef cattle,and had no significantly effect on the most of blood biochemical indices.