How many times is it appropriate for ternary sows to mate and inseminate? Once? Twice? Or three times?

There is a problem of relatively low litter size in ternary sows affected by breed characteristics. some farmers are concerned about whether the reproductive performance of ternary sows can be improved by increasing the number of insemination.

Below, the author analyzes the effects of insemination times on the conception rate and delivery rate of sows and the subsequent effects on the total litter size and healthy litter size per litter, as well as combined with production practice, in order to give some inspiration to farmers.

1. Effect of insemination times of mating on conception rate and delivery rate of sows

Xiong Boli (2017) study on the effect of mating times on reproductive performance of sows found that the difference of conception rate between 2 mating times and 3 mating times was 1.00%, and the difference of delivery rate was 0.34%, and the difference was not significant. It is suggested that 2 or 3 times of breeding will not have a significant effect on the conception rate and delivery rate of sows.

In addition, Lin Zhaojing et al. (2017) the study on the effect of insemination times on the pregnancy of sows showed that there was a significant difference between one insemination and two insemination, as well as between one insemination and three insemination, but there was no significant difference between two insemination and three insemination. It is suggested that one insemination will significantly reduce the conception rate of sows.

Combined with production practice, there are many factors affecting the conception rate and delivery rate of sows, but in terms of the number of insemination, two insemination is more appropriate.

two。 Effect of insemination times of mating on total litter size and healthy litter size per litter

The study on the effect of mating times of Xiong Boli (2017) on the reproductive performance of sows showed that the total litter size per litter of 2 times was slightly lower than that of 3 times, while the average litter size of 2 times was slightly higher than that of 3 times. There was no significant difference in total litter size and healthy litter size between the two groups. It is suggested that 2 or 3 times of mating have no significant effect on the total litter size and healthy litter size of sows.

In addition, Liu Wenmin et al. (2017) the study on the effect of two insemination techniques on the reproductive efficiency of sows found that the effects of two insemination and three insemination on the delivery performance of sows were not significant.

Combined with production practice, there are many factors that affect the total litter size and healthy litter size per litter, but as far as the number of insemination is concerned, it has little effect on it.

Summary

The same is true for ternary sows, it can be seen that the effect of insemination times of mating on the reproductive performance of sows is not significant, but in the post-non-plague era, the use of two insemination techniques can effectively reduce the contact frequency between personnel and sows, but it is of great significance to the prevention and control of non-plague.