添加地顶孢霉培养物对哺乳期荷斯坦奶牛公犊生长性能、健康及血清生化指标的影响

Effect of adding Acremonium terricola culture on growth performance, health and serum biochemical parameters of sucking Holstein male calves

为了研究地顶孢霉培养物对早期奶牛公犊生长性能、健康及血清生化指标的影响,试验选择20头(30±8)日龄、体重相近、健康状况良好的哺乳期荷斯坦奶牛公犊分为对照组和试验组,每组10头,两组饲喂相同代乳粉和犊牛开食料,试验组在代乳粉中添加5 g/(头·d)的地顶孢霉培养物,测定每组哺乳期奶牛公犊采食量、生长性能并进行健康评分,采集血样测定血清生化指标。结果表明:试验组奶牛公犊的平均日增重和开食料采食量均显著高于对照组(P<0.05),试验组犊牛各体尺指标增长量均显著高于对照组(P<0.05),试验组日均收入、日均毛盈利显著高于对照组(P<0.05);试验组奶牛公犊体温及眼睛、耳朵、粪便健康评分指标均低于对照组;试验组犊牛血清中IgG和IgM含量显著高于对照组(P<0.05),其余各指标与对照组差异不显著(P> 0.05)。说明添加5 g/(头·d)的地顶孢霉培养物对哺乳期奶牛公犊的生长性能有促进作用,并且提高了经济效益,改善了奶牛公犊免疫功能和健康水平。

In order to study the effect of Acremonium terricola culture on the growth performance, health and blood biochemical indexes of sucking male calves, twenty Holstein male calves were selected with an average birth age of(30±8)days and a similar weight in this experiment and divided into the control group and the experimental group, with 10 heads in each group. The animals in the two group were fed the same milk substitute and basic diet, and the milk substitute in the experimental group was supplemented with Acremonium terricola culture(5 g/head per day).At the end of the experiment, the indicators of feeding intake, growth performance, and heath score was conducted. Blood samples are then collected and used for the determination of serum biochemical parameters. The results showed that the average daily gain, basic diet intake, increment of each body size index,average daily income, average daily gross profit and content of IgG and IgM in the experimental group were remarkedly higher than those in the control group(P<0.05), while the body temperature and eyes, ears and feces health score indexes of calves in the experimental group were lower than those in the control, but the other indexes in the experimental group had no significant difference compared with the control group(P>0.05). This experiment indicated that the growth performance, economic benefit, immune index and health score of the sucking calves were improved by addition of 5 g/head per day Acremonium Terricola culture.