The weaning time of piglets is generally between 28 and 35 days after birth, and can be as early as 21 days. Weaning can use the following methods according to the situation.
1. One-time weaning method
That is, at the time of weaning, the mother is separated at one time. Specifically, the sows can be driven out of the original column, leaving all piglets raised in the original bar. This method is simple and can prompt sows to heat quickly after weaning. The shortcoming is that after a sudden weaning, the sows are prone to mastitis, and the piglets are suddenly stimulated by weaning to affect their growth and development. Therefore, before weaning, attention should be paid to regulating the sow's feed and reducing the amount of lactation. Care should be taken to care for the piglet and adapt it to a new living environment.
2. Batch weaning
Weaned pigs with large body weight, good growth, and strong appetite should be weaned in time, and piglets with weak body, small individual size, and poor appetite should remain in the side of the sow, and their lactation period should be appropriately extended to facilitate the growth and development of weak and weak piglets. With this method, whole litter piglets can grow normally and avoid stiff pigs. However, the weaning period is longer and affects the estrus breeding of sows.
3. Gradually weaning method
In the 4 to 6 days before weaning, the sows are rushed to a place farther away from the original circle, and then the sows are returned to the original circumstance several times a day, and the number of times of replacement feeding is reduced day by day, 4 to 5 times on the first day. , 3 to 4 times on the second day, the third to fifth days to stop feeding. This method can avoid sow mastitis or gastro-intestinal diseases in piglets. It is more beneficial to mothers and piglets, but it is more time-consuming and labor-intensive.
4. The interval weaning method
After reaching the age of weaning, the piglet drives out the sow during the day to allow the piglet to adapt to independent feeding; at night, the sow is rushed into the original feeding bar (circle), so that the piglet sucks part of the milk and it is weaned until a certain time. In this way, the piglets will not be frightened by changes in the environment, affecting their growth and development, they can achieve the purpose of weaning, and they can also prevent the occurrence of mastitis in sows.
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