Boars are the source of a farm production line. The main objective of the management of boars is to improve the breeding ability of male boars, to make boar physique strong, body condition is not fat and thin, energetic, maintain a strong sexual desire, semen quality is good, improve the fertility rate of breeding pigs. 1. Breeding of boars: It is best to use dedicated boars for the diet of boars. Feed intake was between 2.4 and 2.9 kg depending on body weight and environmental conditions. After approximately one year of age, the feeding level should maintain a constant body weight. At 120 kg body weight, about 2.4 kg/day was supplied, and in the 300 kg body weight, about 2.8 kg/day was supplied. The average daily peaking of breeding is 0.1-0.2kg. When the temperature in winter is below 15°C, the feed intake increases by 3% with the temperature drop of 10°C. One egg per head per day is fed and the feed is fed every day. 1.5kg. The use of tidal mix, uniform modulation, feed 3 times a day, to ensure adequate drinking water, food tanks leftovers should be promptly cleaned and replaced. Second, the use of species of boars: Reserve boar more than 9 months of age, weight 130kg can participate in breeding. There must be a half-month trial training before mating, check the semen twice, and the semen activity is above 0.8 and above the density, before they can be put into use. The ratio suitable for this transaction is between 1:20-1:25. Each boar is best used once a day, no more than 4 times a week, and boars less than one year old 1-2 times per week. Third, the boar's sports do not participate in breeding boars for two days, to exercise 800-1000 meters. It can be done through trials, letting it move around in the maternity walkway, can promote sow heat, increase physical strength, and avoid fat gain. The boar's movement is suitable for half an hour after eating. Fourth, semen check Check boars twice a month for semen and carefully fill in the inspection records. Semen activity above 0.8 can be used. Semen inspections are also performed before infrequently used boars are re-used. Fifth, the artificial insemination method Strengthen the artificial insemination work, sum up the accumulation of experience, improve the technical level. 6. The management requires that the attitude of the boar be harmonious and that intimidation is strictly prohibited; in the course of ejaculation, no stimulation shall be given. Clean the pens twice a day, brushing the pig once to keep the pens and pigs clean and sanitary; winter plowing grass, summer to do a good summer cooling. VII. Statistics and Phase-out The use of each boar is counted once a quarter: the number of mating sows, the production performance (with maternal litter size), and the application report for the elimination of boars. For the sows whose annual elimination rate of 25-50% of the boar is still not conceived for three times, it is necessary to promptly submit a phase-out request and submit it to the responsible person for production.
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