葛根提取物对奶牛生产性能和血液生化指标的影响

Effects of Extracts of Puerariae Radix on Productive Performance and Blood Biochemical Parameters of Dairy Cow

试验选用1～3胎次泌乳荷斯坦牛32头,按照产奶水平、泌乳阶段、胎次相近的原则,随机分为对照组、试验1、2、3组。对照组饲喂基础日粮,试验1、2、3组分别在基础日粮中添加0、12.5、125、250mg/kg的葛根提取物。结果表明,与对照组相比,试验1、2、3组平均日产奶量分别提高了17.47%、9.68%、11.36%;且乳脂率和乳密度有所上升,乳中蛋白质、非脂固体等指标变化不大;试验组能提高奶牛血液中E2、COR、PRL含量,但无显著性差异(P>0.05)。因此,补饲葛根提取物可以缓解奶牛产奶量的下降。

A total of 32 Holstein dairy cows at the same parity and with close lactation stage and similar daily milk yield were randomly divided into four groups： control group, group 1,group 2,group 3. The supplementary level of extracts of puer ariae radix content of control group, group 1, group 2, group 3 were 0,12. 5,25,250 mg/kg respectively , the basic diet was the same . The results showed that the milk yield of experiment group were more stable than that of control group（P〉0.05） ;the milk yield of group 1,group 2,group 3 were more than that of control group for 17.47%,9.68%, 11.36 %. The milk fat pro portion of experiment group were raised（P〉0.05） ,but the milk proportion of protein,SNF and density were not changed ;the plasma levels of E2 ,COR and PRL were raised（P〉0.05）. Therefore, supplement extracts of puerariae radix could lesser1 the decline tendency of milk yield.