蒲公英对放牧肉牛血清代谢产物及增重的影响

Effects of taraxacum mongolicum on serum metabolites and weight gain in grazing beef cattle

本试验旨在测定放牧条件下,蒲公英对肉牛血清代谢产物和增重的影响。试验选用健康的初始重约为419 kg的西门塔尔杂交肉牛16头,随机分成4组,每组4个重复,每个重复1头牛。肉牛放牧采食的同时,试验各组按精料补饲量的0.0%、2.0%、4.0%和6.0%每头每天分别饲喂0.00 kg(对照组)、0.05 kg(L组)、0.10 kg(M组)和0.15 kg(H组)蒲公英草粉(风干重)。预饲期10 d,试验期30 d。结果表明:(1)肉牛日粮中添加蒲公英草粉,可显著提高日增重,提高血清葡萄糖、总蛋白、球蛋白的含量(P<0.05),M组、H组日增重分别较L组提高30.90%、37.84%,较对照组提高39.30%、46.69%;(2)肉牛日粮中添加蒲公英草粉,显著降低了血清尿素氮的含量(P<0.05),血清白蛋白、总胆固醇、甘油三酯、高密度脂蛋白和低密度脂蛋白含量也有降低趋势,但差异不显著(P>0.05)。由此可见,添加蒲公英草粉可有效改善放牧肉牛血清代谢产物,显著促进肉牛增重。

This experiment was conducted to study the effects of taraxacum mongolicum on weight gain and serum metabolism of grazing beef cattle. Under the same raising management condition, a total of 16 Sanjiang Plain healthy beef cattle with initial body weight about 419 kg were divided into 4 groups with 4 replicates of 1 each,which were fed with 0 （control group）,0.05 （low level group）,0.10 （middle level group）,0.15 kg/d .head （high level group） taraxacum mongolicum,respectively, according to 0.0%, 2.0% ,4.0% and 6.0% concentrate supplementation amount.Pre-trial period was 10 d,and the trial period was 30 d.The results showed that： （1）Daily gain and the glucose,total protein,globulin concentrations in serum of grazing beef cattle significantly increased with taraxacum mongolicum meal supplement （P 〈 0.05 ）.The daily gain of middle and high levels group were 30.90% and 37.84% higher than that of low level group, 39.30 % and 46.69 % higher than that of control group.（2）The urea nitrogen in serum significantly deceased （P 〈 0.05）. The albumin,total cholesterol,total triglyeeride,high density lipoprotein and low density lipoprotein in serum all had a tendency to reduce,but the differences were not significant （P 〉 0.05）.The results indicated that the effect of taraxacum mongolieum on increasing weight gain and improving serum metablism of grazing beef cattle was significant.