When many pig farmers are rearing their sows for breeding, they often cause breeding obstacles such as estrus is not obvious or estrus, due to improper feeding management or individual reasons, which affects the breeding efficiency. So, how to avoid this situation?
The reason why normal sows do not have estrus is as follows:
1. Feeding with mycotoxin-contaminated feed results in impaired development and function of the reproductive organs of the sow.
2. Excess nutrition, feeding too fat.
3. Lack of necessary exercise.
4. Lack of certain reproductive nutrition, such as the lack of zinc methionine, vitamin A, vitamin E and so on.
5. Chronic diseases lead to malnutrition and cannot meet the nutritional needs of ovarian development.
6. Endometritis infection of endometriosis, causing uterine pus.
7. Diaper diarrhoea disease occurs during the growth and development of spare pigs. Improper treatment methods such as intraperitoneal injection have led to blocked oviducts, stagnant water, and adhesions.
8. Infestation of reproductive disease, such as blue ear disease, swine fever, ring, pseudorabies, etc.
For the above reasons, avoiding sows from estrus should start from the following aspects:
1. Nutritional balance. Feed a full-fledged diet with appropriate vitamin and trace elements.
2. Exercise properly. The gilt must have enough sports venues.
3. Reasonably fed. After the gilt weighs 75 kg, use the special reserved pig material, disable the pig material, and control the feeding amount. In addition, according to the sow's body condition, appropriate restriction and excellent feeding were given. Feeding was started two weeks before breeding, and immediately after the breeding was completed, the feeding amount was reduced to the level before feeding.
4. Do not feed mildew feed. We highly value the harm caused by mycotoxins, do not feed moldy feeds, and add appropriate drugs such as de-mycotic agents to feeds.
5. Timely treatment of diseases. For gilts with endometritis, antibiotic treatment or elimination.
6. Do a good job of prevention. Scientifically and rationally prevent the development of a reproductive-epidemic disease, and immunize the vaccine against swine fever, pseudorabies, blue ear disease, subtle and encephalitis.
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