1. Vitamins, especially vitamin A, are more essential, and lack of vitamin A can prevent estrus and conception. Even fetuses and poorly developed fetuses can cause night blindness.
2. When there is a shortage of green feed in winter, fish oil should be used and vitamins B1, B2, and D should be supplemented.
3. The weight loss of Landrace pigs immediately after delivery was due to the number of litters, the development of piglets, and the rapid weight loss of sows. In order to prevent weight loss, it is necessary to increase nutrition from the gestation period so that it has a tolerance in advance.
4. The feed given in the 4 weeks prior to delivery should be close to that of the sow of the lactating sow, so that it gradually adapts to avoid adverse reactions to sudden change in appetite and palatability after delivery.
5. On the 2nd to 3rd days before delivery, although the pig has a good appetite, it is also necessary to reduce the feed amount, feed the easily digestible feed, and add water to mix into a soup to reduce the intestinal excrement and facilitate the delivery.
6. Do not exercise sows vigorously, let them be natural, and prevent slippery feet. During the summer season, pay attention to ventilation and keep it clean and dry.
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