The best time for reserve sows to breed

When the reserve sows are raised for about the fifth month, they will begin to be in estrus. However, because the reserve sows are rigid and mature at this time, it is not suitable for breeding. It will have a great impact on the growth and development of sows and the survival rate of piglets. So when raising reserve sows, when should they breed? The following editor has brought you the best time for reserve sows to breed. Let's take a look!

1. Estrus identification

Before we determine the estrus of the reserve sows, we must first do a good job in identifying the estrus of the reserve sows. Because reserve sows are in estrus irregularly when they are sexually mature for the first time. Under normal circumstances, it takes about three times of estrus to stabilize. Usually sows are in estrus about once every three weeks, and although they are affected by local breeds, there is not much difference. The oestrus time of sows is generally about 3-4 days. The specific time of estrus will vary according to season, variety and other factors.

When checking whether the sow is in estrus. First of all, we can do it from three aspects: vulva, feces and heartbeat performance of sows. If there is redness and swelling in the vulva of sows, more defecation and the phenomenon of climbing walls and doors, then it can basically be determined as estrus. Then when sows eat less, scream and the vulva is red, swollen and glossy, and there is mucous membrane bleeding in the vagina, then the breeding work should be carried out in time.

2. Mating identification

The mating time of sows is also very critical, generally within 24-30 hours after estrus is the best time for sows to breed. It is best to be able to breed while the sow is standing still. However, we still need to adjust the breeding time reasonably according to the breeding breed and the age of sows. If you are older, you should breed in time on the day of estrus. If it is in middle age, it can be postponed to the next day, and finally, if it is a sow, it should be done on the third day.

3. management in the later stage of mating.

After the successful breeding of the reserve sows, the action will gradually become stable, and the food intake will gradually increase. And at this stage of management is also very important, to do a good job of feeding and management and fetal protection. Control the temperature to avoid all kinds of adverse effects on sows caused by high temperature and low temperature environment. To ensure that sows have a suitable growth environment, in the late pregnancy, the growth rate of fetal pigs will be accelerated. At this time, we should pay attention to appropriately increase the proportion of nutrition in Japanese food, increase the feeding frequency, and ensure adequate and comprehensive nutrition.

The above is a brief introduction to the best period for reserve sows to breed. That's all for today's introduction. This article is for reference only. I hope it can help you all.