不同预混料对提高奶牛繁殖性能及预防产后疾病的影响

Effect of different premix on improving reproductive performance and preventing postpartum disease of cow

选择中国荷斯坦奶牛138头,研究了不同预混料对提高奶牛繁殖性能及预防产后疾病的影响。按相似配对原则,随机分为3组(对照组、试验Ⅰ组、试验Ⅱ组)。结果表明,本试验研制的奶牛预混料均可提高奶牛的繁殖力并降低产后繁殖疾病的发生;与对照组相比,试验Ⅰ组、Ⅱ组极显著地缩短了奶牛产犊后初次发情时间和产后空怀天数,提高了1次配种受胎率和2次配种受胎率,降低了产后瘫痪、胎衣不下、乳房炎、子宫内膜炎和肢蹄病的发病率,显著减少了每头牛妊娠需要的输精次数;试验Ⅱ组的各项繁殖性能指标均优于试验Ⅰ组,但差异不显著;试验Ⅱ组的肢蹄病发病率极显著低于试验Ⅰ组,其余产后疾病指标,试验Ⅰ组和试验Ⅱ组均差异不显著。

In order to study the effect of different premix on improving reproductive performance and preventing postpartum disease of cow,according to similar paired principles,138 Chinese Holstein cows were selected and divided into 3 groups（control group,experimental group Ⅰ,experimental group Ⅱ）.The result showed that： ⑴the premix which developed by the experimental could improve cow fertility and reduce the incidence of postpartum reproductive diseases;⑵compared with the control group,experimental group Ⅰ,Ⅱ were significantly reduced first estrus after calving time and left with the number of days postpartum,improving one and twice breeding pregnancy rate;reduced the incidence of postpartum paralysis,retained placenta,mastitis,endometritis and limb hoof disease,significantly reduced the need for each cow insemination pregnancy number;⑶the reproductive performance indicators of group Ⅱ were better than group Ⅰ,but the difference were not significant;the limb hoof disease incidence of group Ⅱ was significantly lower than group Ⅰ,other indicators of postnatal disease,group Ⅰ and group Ⅱ were not significantly different.