How to manage the pregnancy period of cattle

Early pregnancy diagnosis plays an important role in dairy production management and the improvement of herd quality. It is of great significance to improve the breeding rate of cattle and reduce the empty rate. Through early pregnancy diagnosis, pregnant cattle and non-pregnant cattle can be well known, so that corresponding feeding and management measures can be taken. Pregnant cattle should be raised reasonably, to ensure the health and normal development of mother and fetus, to prevent abortion; for non-pregnant cattle, timely treatment should be taken to promote their re-estrus and insemination. At the same time, analyze the causes of non-pregnancy in cattle and find solutions to minimize the loss of production caused by empty pregnancy. Therefore, early pregnancy diagnosis in dairy farms is a very important work.

Interruption of pregnancy is a common pregnancy disease in dairy farms. The harm caused by it not only lies in the fetal death, which reduces the calving rate, but also destroys the normal calving time, prolongs the days of empty pregnancy and calving interval, and directly affects the milk yield and final milk production of this fetus. Therefore, the prevention of cow abortion is an important work in cow production.

1. Strengthen feeding and management. The diet should be balanced, the feed should be diversified, and the diet should be adjusted in time according to the changes of physiological characteristics. In the reasonable supply of energy and protein feed, full attention should be paid to the supply of mineral feed calcium, phosphorus, manganese, zinc, iron and vitamins A, D, E; do not feed moldy and deteriorated feed; do not bomb, beat or drive cattle; when treating pregnant cattle, be cautious in the use of medicine, do not indiscriminately use laxatives and aphrodisiac drugs.

? 2. There has been clinical abortion, and the cause should be found out. Each aborted cow should be fed separately, and the aborted fetus and fetal membrane should be carefully examined to observe whether the fetus has deformity and whether the placenta has edema and necrosis. In order to diagnose the disease, cow blood, uterine secretions, fetal stomach and its contents, liver and spleen can be collected for microbiological examination; check whether the cow has systemic diseases and understand the feeding and management. Aborted fetus, placenta and mattress should be buried or burned.

3. Vaccination. In order to prevent abortion caused by infectious diseases, calves aged from 5 months to 6 months should be vaccinated with Pig No. 2 or Sheep No. 5 vaccine. Adult cows do test tube agglutination test for brucellosis once or twice a year, and positive cows should be isolated; with the expansion of cattle herds and the frequent introduction of cattle, some new infectious diseases of dairy cows, such as infectious bovine rhinotracheitis and bovine viral diarrhoeal disease, also spread gradually, so vaccination should be considered.