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.
First, breeding of boars
The boar's dietary standards should be stable, with a daily supply of 2.75 kg, a daily supply of 3.0 kg in the winter, one egg per head per day, and 1.5 kg of green feed per head per day in summer. The use of tidal mix, uniform preparation, feeding 3 times a day, to ensure adequate drinking water, food tanks leftovers should be promptly cleaned and replaced.
Second, the use of boars
The proportion of sows producing piglets is discussed and formulated by the sales staff in consultation with technical personnel. The principle of mating plan is established according to the proportion of piglets produced; the mating plan is formulated by breeders and the breeder selects boars for breeding according to the plan.
Reserve boars aged over 7.5 months and weighing 110 kg can participate in breeding; half-month trial training is required before mating; check semen twice, semen vigor above 0.8, and density above, before putting into use, every four days 1 first time. Adult boars are planted once every three days.
Every morning and evening, try one time and one hour after work, and the order of the units of love is the same; the sow accepts the climb and conducts the first breeding. The interval is 18 to 24 hours and the second time. The way of mating is repeated breeding; if it can distinguish the offspring, double matching can be used.
Carefully fill out the sow's trial, breeding, pregnancy record and boar attendance tables, provide data for the sows to ensure pregnancy, daily sow mating records, fill out the sow mating records.
Pregnancy examination, the sows after 16-23 days after mating should be observed to determine their pregnancy; more than 30 days after mating more than the pregnancy test to determine whether the pregnancy.
Third, the kind of boar sports
For boars that do not participate in breeding for two days, 800-1000 meters are required to be exercised on the court and can be completed through trials. Exercise and mating should be done within half an hour after eating.
Fourth, semen check
Check the 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, artificial insemination method
Strengthen the work of artificial insemination, sum up experience and improve the level of technology.
Six, management requirements
The attitude towards boars must be harmonious, and intimidation is strictly forbidden; 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.
Goal: Total herd sow fertility rate requirement of more than 85%, two litters per sow per year, the average total litter size per litter more than 10, do a good job in various records.
The use of each boar was counted once a quarter: the number of mated sows and their production performance (with maternal litter size), and a report on the elimination of boars.
For sows that have not been conceived with three estruss, they should promptly request a phase-out and submit them to the person in charge of production.
First, breeding of boars
The boar's dietary standards should be stable, with a daily supply of 2.75 kg, a daily supply of 3.0 kg in the winter, one egg per head per day, and 1.5 kg of green feed per head per day in summer. The use of tidal mix, uniform preparation, feeding 3 times a day, to ensure adequate drinking water, food tanks leftovers should be promptly cleaned and replaced.
Second, the use of boars
The proportion of sows producing piglets is discussed and formulated by the sales staff in consultation with technical personnel. The principle of mating plan is established according to the proportion of piglets produced; the mating plan is formulated by breeders and the breeder selects boars for breeding according to the plan.
Reserve boars aged over 7.5 months and weighing 110 kg can participate in breeding; half-month trial training is required before mating; check semen twice, semen vigor above 0.8, and density above, before putting into use, every four days 1 first time. Adult boars are planted once every three days.
Every morning and evening, try one time and one hour after work, and the order of the units of love is the same; the sow accepts the climb and conducts the first breeding. The interval is 18 to 24 hours and the second time. The way of mating is repeated breeding; if it can distinguish the offspring, double matching can be used.
Carefully fill out the sow's trial, breeding, pregnancy record and boar attendance tables, provide data for the sows to ensure pregnancy, daily sow mating records, fill out the sow mating records.
Pregnancy examination, the sows after 16-23 days after mating should be observed to determine their pregnancy; more than 30 days after mating more than the pregnancy test to determine whether the pregnancy.
Third, the kind of boar sports
For boars that do not participate in breeding for two days, 800-1000 meters are required to be exercised on the court and can be completed through trials. Exercise and mating should be done within half an hour after eating.
Fourth, semen check
Check the 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, artificial insemination method
Strengthen the work of artificial insemination, sum up experience and improve the level of technology.
Six, management requirements
The attitude towards boars must be harmonious, and intimidation is strictly forbidden; 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.
Goal: Total herd sow fertility rate requirement of more than 85%, two litters per sow per year, the average total litter size per litter more than 10, do a good job in various records.
The use of each boar was counted once a quarter: the number of mated sows and their production performance (with maternal litter size), and a report on the elimination of boars.
For sows that have not been conceived with three estruss, they should promptly request a phase-out and submit them to the person in charge of production.
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