What are the reasons for low conception rates in sows?
The pig farming industry is very well developed in China, and there is basically pig farming in every part of the country. For many people, pork is also an indispensable meat food at every meal, so the scale of pig farming in China is still very large. When raising pigs, the important thing is to manage sows well. And sows often show a low conception rate during breeding. So what causes the low conception rate in sows? Below, the editor will give you a brief introduction, let's take a look!
1. Nutritional factors
During the growth of sows, if the nutrients do not meet the growth needs of the sows, then the estrus and ovulation of the sows will be affected, which will lead to a decline in the breeding and conception rate of the sows. And phenomena such as stillbirth and weak piglets may also appear. Moreover, in summer, when the temperature is higher, if the sows' vitamin intake is too low or the vitamins in the feed are destroyed, then it will also cause the conception rate of the sows to decline and affect the normal development of the embryos. Finally, in the feed that sows eat, if there are too few nutrients, for example, a lack of green feed or too little feed, then the breeding pigs will be greatly affected during reproduction.
2. Boar factors
Under the high-temperature and hot environment of summer, the libido of boars will decrease because of this, and cases of dead sperm and weak sperm will also become more and more common. Therefore, the correct mating time for sows cannot be guaranteed, ultimately causing the sows to be empty. Therefore, the factor of decreased libido in boars is one of the main factors leading to a low conception rate in sows. In addition, if boars suffer severe heat stress in summer and the boars are not effectively used, then over a long period of time, it is very unfavorable to the health of the boars. This leads to a decline in the sexual function of boars, which will also affect the conception rate of sows.
3. Exercise factors
When raising sows, we must ensure that the sows have sufficient exercise every day. However, at present, many pig farms have the phenomenon of pigs lacking exercise, and many pig farms mainly raise pigs in gestation crates, which leads to even less exercise for the pigs. Especially in boar raising, if there is a lack of exercise, then it will also reduce the sperm vitality of boars and directly affect the conception rate of sows. And if sows lack exercise, then the estrus and ovulation of the sows will also be affected, which is very unfavorable for mating and conception.
4. Disease factors
Many viruses can affect the conception rate of sows to varying degrees, causing various abnormalities in the reproductive performance of sows. For example, during the empty stage, some sows will show continuous anestrus. In the early stage of mating, if sows are infected with a virus, then there will be no return to estrus, so they will not become pregnant and give birth. In the early stage of pregnancy, the embryos will die early and then be absorbed by the sows, and so on. Therefore, when raising sows, we must pay attention to doing a good job of vaccination according to the procedure to reduce the incidence of disease in sows.
The above is a brief introduction to the reasons for low conception rates in sows. That is all for today's introduction. This article is for reference only, and I hope it can help everyone!