不同青贮饲料对肉牛生长性能及血清生化指标的影响  

Effects of different silages on growth performance and serum biochemical indicators in the beef cattle

作　　者：杨保奎 刘信宝[2] 沈益新[2] 韩兆玉[1] 

机构地区：[1]南京农业大学动物科技学院,江苏南京210095 [2]南京农业大学草业学院,江苏南京210095

出　　处：《畜牧与兽医》2016年第11期5-9,共5页Animal Husbandry & Veterinary Medicine

基　　金：江苏省农业三新工程项目(SXGC[2014]308)

摘　　要：本试验是为了研究稻草青贮及稻草+甜高粱混合青贮对肉牛的生长性能及血清生化指标的影响。选取18头年龄和体重相近的健康肉犊牛进行配对,随机分为3组,每组6头。对照组饲喂玉米青贮,试验Ⅰ组饲喂稻草青贮,试验Ⅱ组饲喂稻草+甜高粱混合青贮。试验开始和结束时,测定试验牛体重和体尺指标。试验结束时,每头肉牛采血10 m L,用于测定血清指标。结果表明:与对照组相比,试验结束时试验Ⅰ组和试验Ⅱ组平均体重分别提高3.33 kg和4.00 kg(P>0.05);试验Ⅰ组的体躯指数提高了4.78%(P=0.087)。试验Ⅰ组的血清尿素氮含量比对照组和试验Ⅱ组高(P<0.01);试验Ⅰ组的总胆固醇含量高于对照组(P<0.01),且显著高于试验Ⅱ组(P<0.05)。与对照组相比,试验Ⅰ组的甘油三酯含量显著升高(P<0.05),试验Ⅱ组的甘油三酯含量有升高的趋势(P=0.082);试验I组的高密度脂蛋白胆固醇含量有升高的趋势(P=0.055)。试验结论:稻草青贮或稻草+甜高粱混合青贮具有良好的饲喂效果,可用于替代玉米青贮作为肉牛的粗饲料。The present experiment aimed to evaluate the effect of rice straw silage and rice straw＋sweet sorghum mixed silage on growth performance and serum biochemical indicators in beef cattle. Eighteen healthy beef cattle with similar age and body weight were paired and randomly divided into three groups（ 6 cattle of each group）. Control group was fed corn silage,treatment Ⅰ fed rice straw silage and treatment Ⅱ fed rice straw＋sweet sorghum mixed silage. Body weights and body size indexes of cattle were measured on the first and last day of this experiment. Blood samples were taken from every cattle on the last day for measuring serum indicators. Compared with control group,average body weights in treatment Ⅰ and treatment Ⅱ were improved 3. 33 kg and 4. 00 kg,respectively（ P〉 0. 05）; trunk index in treatmentⅠ was improved by 4. 78%（ P = 0. 087）. Urea nitrogen content in sera of treatment Ⅰ was higher than that in control group and treatment Ⅱ（ P〈0. 01）; the content of total cholesterol in treatment Ⅰ was higher than that in control group（ P〈0. 01） and treatment Ⅱ（ P〈0. 05）.Compared with control group,the content of triglyceride in treatment Ⅰ was increased（ P〈0. 05） and the content in treatment Ⅱ showed an increased tendency（ P = 0. 082）; the content of high density lipoprotein cholesterol（ HDL-C） also had an increased tendency（ P = 0. 055）.These results indicated that rice straw silage and rice straw＋sweet sorghum mixed silage had good effects of feeding beef cattle and could be used to replace corn silage as coarse fodder for beef cattle.

关 键 词：肉牛 稻草青贮 混合青贮 生长性能 体尺指标 血清生化指标 

分 类 号：S823.92[农业科学—畜牧学]