What are the reasons for sows repeatedly failing to conceive after mating
Pig farming can be said to be one of the most basic types of farming in our country, and no matter where it is, the scale of pig farming is very large. When raising pigs, if you want to maintain normal, healthy and continuous farming, then the breeding work for sows is very important. But many people find when breeding sows that sows always fail to conceive despite repeated mating. So what are the reasons that cause sows to repeatedly fail to conceive after mating? Below, the editor will give everyone a brief introduction, let's take a look!
1. Boar problems
The boar is actually one of the main reasons causing sows to repeatedly fail to conceive after mating. During mating, the quality of the boar directly determines the success rate of the sow's mating. If the boar's sperm count is too low and its activity is insufficient, especially if there is dead sperm, then it is extremely likely to cause sows to repeatedly fail to conceive after mating. Moreover, the sow's return-to-estrus rate will also be very high. So when raising boars, we should pay attention to regularly checking the boar's semen output and quality, and check its density and vitality. Ensure the boar's semen quality is good, and at the same time, check it again during mating to ensure the success rate of mating.
2. Feed factors
When feeding sows, if moldy feed is fed, then the impact on the sow's reproductive performance and pregnancy is very great. Because moldy feed contains mycotoxins, and mycotoxins are very unfavorable to the growth of sows, everyone must pay more attention. If the energy proportion in the feed is unbalanced, for example, if the energy is too low, then it will inhibit the release of gonadal hormones in sows. This leads to reduced secretion of luteinizing hormone and follicle-stimulating hormone in the sow's body. This makes it difficult for sows to conceive. And if the energy is too high, then the sow grows too fat, the conception rate will also decrease as a result, and early miscarriage is likely, the embryo survival rate decreases, and return-to-estrus occurs.
Or if the protein content in the feed is too low or the protein quality is too poor. Then it is very unfavorable to the development of sow eggs, and the number of ovulations will also decrease, leading to a decline in the conception rate. Furthermore, if the feed lacks vitamins, then it will also have a great impact on the sow's conception rate. In particular, vitamins such as vitamin A, D, and E are of great significance to the reproduction of sows. If vitamin A is lacking, it will cause the sow's follicle maturation to be blocked, leading to infertility. If vitamin D is lacking, then it will affect the sow's calcium and phosphorus absorption, leading to metabolic disorder, and finally a lack of vitamin E can easily lead to infertility.
3. Sow endometritis
Many people ignore this point when raising pigs. Especially for hidden endometritis, many people think that if they can't see it, there is no problem. But in fact, this is also one of the main reasons causing sow infertility. Endometritis, for sows, is the most likely to cause sow infertility and is also the easiest to overlook. The losses caused to the pig farm are also very great. If the sow's implantation is unsuccessful, or if the embryo implantation is not fixed and causes early miscarriage that is not discovered.
The above is a brief introduction to what causes sows to repeatedly fail to conceive after mating. That's all for today's introduction. This article is for reference only, and I hope it can help everyone!