What to Do About Infertility in Breeding Pigs in Summer? A Detailed Guide to Scientific Management Measures

I believe what most pig farmers fear most is infertility in breeding pigs, especially in summer. Because summer temperatures are high, and among livestock, pigs have relatively poor body temperature regulation ability, and their heat tolerance is far inferior to that of cattle and sheep. As the temperature rises, the rectal temperature of pigs begins to rise, and if high temperatures persist, pigs cannot tolerate it. It is often during this period that breeding pigs are very easily affected by "infertility." Then in this summer it will bring great losses to pig farmers. Therefore people have always been looking for solutions, and every hot summer pig farmers are very anxious. In order to safely get through the "summer infertility period," the following points are hoped to be of some help to pig farmers:

1. Reduce stocking density.

2. Strengthen feeding management and carefully formulate summer feed.

3. Reduce the crude fiber content in the daily ration, especially reduce the proportion of wheat bran and rice bran.

4. Pig feed must ensure various nutrients such as protein, energy, minerals, and vitamins, and in particular the lysine content should be increased (from 0.5% to 0.9%).

5. The content of vitamin A, E, C, folic acid, and biotin should be especially increased, and the sufficient supply of Zn, Se, Mg, K, and Na in the daily ration should be ensured. This is because these nutrients play a particularly important role in the balance of body fluids and the normal development of ovarian follicles.

6. Appropriately add oil and fat. This can not only meet the energy needs of sows and reduce body weight loss, but also improve the survival rate of piglets.

7. Improve the pig house structure to ensure warmth in winter and coolness in summer. Use open or semi-open types, pay attention to the orientation of the pig house, and use heat-insulating materials for the pig house roof. If conditions permit, a shallow pool can be set up in the exercise yard for pigs to roll and bathe in to cool down.

8. Strengthen ventilation in the pig house. Open more doors and windows inside the house, install ceiling fans and exhaust fans, and strengthen air convection.

9. Do a good job of greening the pig farm. Through shading, trees reduce radiation, intercept rainwater, and through transpiration can reduce radiant heat on the pig farm by 50-90%. Through greening, the entire pig farm should form a comfortable and cool microclimate under the cover of shady trees. More trees should be planted around the exercise yard, and vines should be allowed to climb onto the roof and walls, giving full play to the shading and heat-insulating effect of green plants.