Causes of low conception rate in sows

The development of pig industry in China is very mature, and there are basically breeding in all parts of our country. Pork is also an indispensable meat food for many people in every meal, so the breeding area of pigs in our country is still very large. When raising pigs, it is important for us to do a good job in sow management. However, the phenomenon of low conception rate often occurs in sows. So what is the reason for the low conception rate of sows? The following editor will give you a brief introduction, let's have a look!

1. Nutritional factors

In the process of sow growth, if the nutrients do not meet the growth needs of sows, then it will affect the estrus and ovulation of sows, resulting in a decrease in the mating pregnancy rate of sows. And there may be stillbirth, weak fetus and other phenomena. And in summer, the temperature is higher, if the vitamin intake of sows is too low or the vitamins in feed are destroyed, then it will also reduce the conception rate of sows and affect the normal development of embryos. Finally, if there are too few nutrients in the feed for sows, such as lack of green feed or too little feed, then breeding pigs will be greatly affected during reproduction.

2. Boar factor

In the hot and hot environment in summer, the libido of boars will be reduced, and there will be more and more dead sperm and weak sperm. Therefore, it is impossible to guarantee the correct mating time of sows, resulting in empty sows. Therefore, the decrease of libido in boars is one of the main factors leading to the low conception rate of sows. In addition, if boars are subjected to severe heat stress in summer and have not made effective use of boars, it will be very bad for boars' health for a long time. The decline of sexual function in boars will also affect the conception rate of sows.

3. Sports factors

When raising sows, we should make sure that sows have enough exercise every day. However, there is a lack of exercise in many pig farms, and many pig farms are mainly raised in positioning pens, resulting in less exercise for pigs. Especially in boar feeding, if there is a lack of exercise, it will also reduce the sperm motility of boars and directly affect the conception rate of sows. If the sow lacks exercise, then the oestrus and ovulation of the sow will also be affected, which is very disadvantageous to the mating and conception.

4. Disease factors

Many viruses will affect the conception rate of sows in varying degrees, resulting in a variety of abnormal reproductive performance of sows. For example, in the empty stage, some sows will have persistent non-estrus. In the early stage of mating, if the sow is infected with the virus, then there is no return to love, so it will not become pregnant and give birth. In the early stages of pregnancy, the embryo will die in the early stage, and then be absorbed by sows and so on. Therefore, when raising sows, we must pay attention to do a good job of vaccination according to the process to reduce the incidence of sow disease.

The above is a brief introduction to the reasons for the low conception rate of sows. That's all for today's introduction. This article is for reference only. I hope it can help you all.