How can the reproductive performance of three-way cross sows be improved? Pig farmers are all paying attention to these questions

1. Can a sow be mated on her first estrus?

2. Is the dystocia rate high in three-way cross sows?

3. Which boar breed is better for mating three-way cross sows?

4. What should be done if a sow's estrus symptoms are not obvious?

5. How does it work to mate three-way cross sows with a Duroc boar?

6. How many days does it take for a sow's uterus to recover?

7. How effective is using a Landrace boar on three-way cross sows?

8. A replacement gilt comes back into estrus one week after mating - is this endocrine disorder?

9. How should three-way cross replacement gilts be fed during the mating stage?

10. During a special period with no boars, how can boar pheromone spray and sound players be used effectively?

11. What is second-litter syndrome?

12. How does mating with frozen semen work?

13. The sow has farrowed, has not eaten feed for several days, drinks only a little water, and has not passed any feces - what should be done? Can a sow be mated on her first estrus?

14. May I ask, if I buy a sow of around 200 jin now and start raising her, will I lose money?

15. If three-way cross sows are not fed replacement gilt feed, is it better to feed gestation feed or lactation feed?

16. Can three-way cross sows left over from African swine fever be used for breeding?

17. Why do two-way cross sows discharge pus about a week after mating, and in large amounts? Why did this not happen before?

18. My replacement gilt has already come into estrus a second time, but she will not allow mating - what is the reason?

19. What causes metritis in a replacement gilt that has not been mated?

20. How many times a year is best for PRRS purification in sows?

21. What should be done about ovarian cysts?

22. Some sows have estrus lasting 5-6 days - what is going on, and for thisbreeding pighow should mating be done?

23. The sow has already been mated, is close to farrowing but has no belly, has never come into estrus, and at farrowing time there are no piglets - so where did the piglets go?

24. There are three-way cross sows whose estrus lasts 5 days, or even more than 5 days - in this situation, which time period is suitable for mating?

25. For Landrace × Large White two-way cross sows, is it best to mate them with a Landrace or a Large White to keep the offspring as sows?

If it is a Landrace (♂) × Large White (♀) two-way cross pig, it is recommended to mate with a Large White boar; if it is a Large White (♂) × Landrace (♀) two-way cross pig, it is recommended to mate with a Landrace boar.