It is the focus of feeding and management of boars in winter and spring to ensure nutrition, promote regular movement of pigs, and reasonably grasp the frequency of breeding.
The main components of boar semen are water and protein. These proteins must be obtained from feed. Therefore, attention should be paid to the supply of protein feeds to male boars, especially in the cold winter season, and the supply of animal feed and green fodder should be sufficient. Can use small fish, shrimp, fish meal, bone meal, blood meal, silkworm cocoon and insects, etc., as a supplementary feed for animal protein. In addition, busy boars should be fed with 1-2 eggs a day to supplement the consumption of protein and increase the amount of ejaculate. In feed compatibility, in addition to ensuring the protein content, it should also pay attention to the timely supply of vitamins, mineral feed.
Second, if there is only rich nutrition, but lack of exercise, boars will be over-fertilized, and libido and semen quality will also decline. Therefore, letting boars exercise regularly can enhance physical fitness, enhance the vitality of sperm, increase breeding performance, and extend the useful life. In general, the boars are chased and driven 1-2 times a day, each time for about 1 hour at a speed of 2-4 kilometers per hour. Winter is selected at noon. The amount of exercise during mating should be appropriately reduced.
Third, pay attention to the number of breeding. Too many breeding times will affect the health of the boar and reduce the quantity and quality of sperm, which will directly affect the conception rate and litter size of the sow. However, if you do not breed or collect for a long period of time (1-2 months), it will affect the quality of semen. Therefore, it must be rationally bred. Generally adult boars are bred 4-5 times a week, and reserved boars are suitable for 3-4 times a week.
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