What should I do if a sow in a pig farm without boars is not in heat?

For pig farms without boars, the following methods can be used to train sows to go into estrus:

1. Strengthen feeding management and feed sows nutritionally complete feed, especially amino acid balance. , Vitamin A, vitamin E, calcium, phosphorus and other vitamins and minerals must be supplied in sufficient amounts. Sows maintain 80% to 90% fat condition.

2. Strengthen the exercise of sows and ensure that sows exercise for 1 to 2 hours every day, which is beneficial to sows in estrus and breeding;

3. Sows are raised in low-density and small groups , 5 to 6 heads per column.

4. Drive the sows in estrus into the pen of the sows that are not in estrus, and let the sows in estrus crawl away from the sows that are not in estrus, thereby stimulating the sows to go into estrus.

If necessary, you can use drugs to aphrodisiac.