Management techniques of sow breeding

Sows are indispensable in raising pigs, and the proportion of sows in raising pigs is very critical. It directly affects the number and economic benefit of the pig herd. So when raising pigs, the management of sows is very important. Especially in breeding, the breeding work of sows determines their yield. So how to manage sows when mating? The following editor brings you the breeding management technology of sows, let's have a look!

1. Observe estrus

When sows enter the early stage of sexual maturity, the time of the first three oestrus is irregular. Usually at the beginning of the fourth time will gradually become regular, sows will be restless after estrus, obvious lack of appetite. And sleep will be accompanied by different snoring. Observing the vulva of the sow, you will find that the color gradually deepens, there is swelling, and some fluid will be secreted. Finally, when sows are in estrus, they are very sensitive to boars. If there is a boar around, you can see with the naked eye that the sow is trembling and keep her eyes fixed on the boar.

2. Boar selection

The selection of boars during breeding is also very important. When selecting boars, we should choose the work with normal growth and development, weight about 120kg, good physique, high semen quality, fast growth and high feed conversion rate. The quality of boars is closely related to the success rate of mating and the growth ability of young pigs. Be sure to choose the purebred work as the male parent, not in the hybrid population. Otherwise, it will reduce the quality of young pigs and affect the efficiency of breeding. Among them, we should pay attention to avoid choosing work related to sows and prevent inbreeding.

3. Mating time

After the sow is in estrus and the boar is selected, it is necessary to breed at the right time. Mating time is also critical for sows, which usually ovulate within 36 hours after estrus. The fertilisation time of eggs is only about 10 hours, and the time of sperm from reproductive tract of boars to fallopian tubes is about 3 hours. Therefore, we should reasonably control the mating time of sows according to these time data. usually, the best mating time of sows should be within 20-30 hours after estrus.

4. Points for attention

The appetite of sows will decrease during mating, so attention should be paid to reducing the amount of feed properly. If fed too much, it will increase the temperature in the womb of the sow. It leads to the decrease of the survival rate of fertilized eggs and the number of offspring. And it will waste too much feed and increase the cost of breeding. And we should pay attention to the mating time of the first breeding sows, which should be chosen at the third time of estrus. If the breeding time is too early, it is easy to produce various adverse phenomena such as stillbirth and abortion, which reduces the growth ability of piglets and leads to insufficient breeding efficiency.

The above is a brief introduction of sow breeding management technology. Sow breeding management is very important, if poor management, it will have a great impact on it, so we must pay more attention. That's all for today's introduction. This article is for reference only. I hope it can help you all.