The main manifestations of cattle reproductive disorders are the decline in reproductive rate, the lack of estrus in cows, and the lack of breeding ability of bulls. There are three main reasons for these situations:
1, improper management. Unbalanced dietary nutrition, lack of minerals or vitamins can cause estrus cycle in cows or estrus for a long time. The lack of selenium in feed can lead to declining cow reproduction rate or post-partum placental clothing; the lack of cobalt in feed can lead to Cows are wasting, declining and the basal metabolic rate is reduced, which reduces the production performance; the proportion of concentrates in the feed is too high, coupled with insufficient activity, resulting in cows that are too fat and are not susceptible to heat. 2, disease. Including brucellosis, bovine contagious nasal bronchitis, bovine mucositis, bovine salmonellosis.
3, reproductive technology errors. Technical inaccuracies such as artificial insemination, embryo transfer, and midwifery cause contamination of the cow's reproductive tract, leading to reproductive disorders in cows.
Prevention:
1. For the investigation of brucellosis, if it is suspected to be caused by brucellosis, it should be reported to the local veterinary authorities for diagnosis. Once diagnosed, the diseased cattle will be immediately culled and detoxified.
2, daily should ensure that the mother (public) cattle nutrition should be balanced, to ensure nutrition, but also do not make the mother (female) cattle fat;
3, keep the cowshed ventilated, cool, not too crowded;
4. Clean and sterilize cow genitals before artificial insemination, insemination operation should be gentle, do not damage the reproductive tract, semen to ensure no pollution; 5, during delivery, strict disinfection of the delivery room, utensils and cow vulva, After yak production or after the discharge of the placenta, uterine cleansing and drug infusion are performed to prevent infection.
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