What is the reason for repeated infertility in sows

Pig raising can be said to be the most basic breeding project in our country, no matter where it is, the breeding area of pigs is very large. When raising pigs, if you want to keep breeding normally and healthily, then the breeding work of sows is very important. However, when breeding sows, many people will find that sows are always infertile. So what are the causes of repeated infertility in sows? The following editor will give you a brief introduction, let's have a look!

1. Boar problem

In fact, boars are one of the main causes of repeated infertility in sows. During breeding, the quality of boars will directly determine the success rate of sows. If the number of boar sperm is too small and the activity is insufficient, especially if there is dead sperm, it is very easy to lead to repeated infertility in sows. And the return rate of sows will also be very high. Therefore, when raising boars, we should pay attention to regularly check the semen secretion and quality of boars, and check their density and vitality. To ensure that the boar semen quality is good, at the same time when mating, but also to check again to ensure the success rate of mating.

2. Feed factor

When feeding sows, if moldy feed is fed, it will have a great impact on the reproductive performance and pregnancy of sows. Because moldy feed contains mycotoxin, mycotoxin is very disadvantageous to the growth of sows, we must pay more attention. If the proportion of energy in the feed is out of proportion, for example, if the energy is too low, it will inhibit the release of gonadal hormones in sows. Lead to the decrease of luteinizing hormone and follicle stimulating hormone secretion in sows. It makes it difficult for sows to conceive, and if the energy is too high, then the sows grow too fat, the pregnancy rate will decrease, and the early abortion will be easy, the embryo survival rate will be reduced, and the phenomenon of relapse will occur.

Or if the protein content in the feed is too low or the protein quality is too poor. Then it is very disadvantageous to the development of sow eggs, and the number of ovulations will be reduced, resulting in a decrease in the conception rate. In addition, if there is a lack of vitamins in the feed, it will also have a great impact on the pregnancy rate of sows. Vitamin A, D, E and other vitamins, in particular, are of great significance to the reproduction of sows. If there is a lack of vitamin A, it will block the follicular maturation of sows and lead to infertility. Lack of vitamin D will affect the absorption of calcium and phosphorus in sows, leading to metabolic disorders, and finally lack of vitamin E can easily lead to infertility.

3. Sow uterine inflammation

Many people ignore this point when raising pigs. Especially for recessive hysteritis, many people think it's okay if they can't see it. But in fact, this is also a major cause of infertility in sows. For sows, endometritis is the most likely to lead to infertility and is the most likely to be ignored. The loss to the pig farm is also very great. If the sow implantation is not successful, or the embryo implantation is not fixed so that the early abortion will not be detected.

The above is a brief introduction to what is the reason for repeated infertility in sows. That's all for today's introduction. This article is for reference only. I hope it can help you all.