Why do sows often have premature, miscarriage and stillbirth? The reason is here!
2019-10-11 10:54:51 Click:
Main causes of premature, abortion and stillbirth of pregnant sows:
First, nutritional deficiencies, such as low nutritional levels of feed, lack of vitamin E and vitamin A, cause excessive weight loss in pigs and cause early embryo death;
Second, improper breeding management, such as excessive breeding density, disparity in weight and weight, leading to bite frames and fights, and the pigsty floor is slippery and easy to fall;
The third is feeding irritating odor or moldy feed and frozen feed in winter;
Fourth, the parvovirus and Japanese encephalitis vaccine were not injected in time.
Find out the reason, if the nutrition level is too low, adjust the feed formula and the feeding amount in time to prevent pigs from being too lean. The supply of vitamins should be full and the amount should be sufficient. When multi-vitamins are fed, they should be supplied at 1.5 times the normal amount. It is strictly forbidden to feed irritating peculiar smell or moldy feed, and use warm water in winter. Inject sow herds with parvovirus and Japanese encephalitis vaccine as required. The injection method is to vaccinate backup sows and backup boars one month before breeding; sows should be injected after delivery or 2 weeks before breeding; Breeding boars are given every six months. Strong immunity was developed 14 days after the vaccine injection, and the immunization period was 6 months. Japanese encephalitis vaccines are given to male and female pigs at the end of April and early May. The first sow must be injected, the second sow should be injected as much as possible, and three or more parouses need not be injected.
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