Sow artificial insemination technical points

In recent years, the pig-breeding industry has gradually become large-scale, intensive, and highly efficient. The application of pig artificial insemination technology in production has become more and more important and has received increasing attention. Pig artificial insemination refers to the use of collection equipment to take boar semen on farms. After these semen are examined, processed and preserved, the insemination equipment is used to input qualified semen into the genital tract of estrus sows instead of pigs. Only one mating method for natural mating.

1. Choose a patience worker who is meticulous, responsible, and experienced.

2, preparation before insemination. All utensils must be strictly disinfected. Glass items should be thoroughly washed and rinsed after each use, and then placed in a high-temperature drying cabinet to disinfect and be sterilized. The rubber infusion tubes should be wrapped in gauze and then sterilized with steam and directly disinfected with alcohol.

3, grasp the sow during estrus, when pressing the sow lumbosacral, sows performance is very stable, both ears erect or appear "static response", this time is the best timing of insemination. If boars are used for trials, it is generally advisable to inseminate within 4 to 8 hours after the sow is willing to accept the boar. Older with early, less with late, not many with the middle of the old.

4, insemination operation. During insemination, pay attention to hygiene and prevention of swine diseases. Wash the vulva with 0.1% potassium permanganate disinfectant, then wipe dry, drop two drops of semen as lubricant, wait for insemination. Keeping the boar close to the sow and inducing the sow's excitement. Slowly rotate the oil-coated insemination hose into the sow’s vagina to a depth of 30-35cm. Then inject the insemination bottle or the syringe containing the semen and raise it. Inject all the semen into the uterus and inseminate. Will last 5-10 minutes, the amount of insemination is generally 20 ~ 50mL. During the insemination process, the mating technician presses the buttock of the sow, stimulates the sow's breast, vulva, etc., so that the semen can flow smoothly and prevent backflow. Interval insemination, generally after the first infusion, after 8-12 hours, then insemination.

5, attention. The first is to avoid the use of detergents and disinfectants to clean artificial insemination equipment. The second is that individual sows that have stable estrus from 8 to 12 hours after three inseminations can receive an additional insemination. The third is to properly add oxytocin to the diluent to help increase the conception rate and litter size of sows.

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