Pigs commonly used mating methods are natural mating, artificial mating and artificial insemination of three, we are introduced below for friends to refer to.
1, the natural mating method of the pig natural mating is to put the male and female pigs together to raise, the boar randomly with the estrus sow mating.
Generally 15 to 20 sows are put into a boar for natural mating.
Natural mating is easy to cause male and female sows indiscriminate mating, sows lack of mating records, can not project the expected date of birth, boars indiscriminate mating, overuse, affecting health, this breeding method has been rarely used in pig production.
2, the pig's artificial auxiliary mating method artificial auxiliary mating boars usually do not mix together, but in the sow in heat, the sow will be driven to the designated location and boar mating or boar driven to the sow pen mating.
When the boar climbs onto the sow's back, the auxiliary pulls the sow's tail apart with his hand, and pulls the boar's foreskin with the other hand to guide the penis into the vagina.
Then the boar is observed to ejaculate, and when the boar is finished ejaculating, the boar is immediately driven away to avoid a second mating.
This method can rationalize the use of boars.
3, pig artificial insemination technology artificial insemination is a man-made method to get the boar's semen, and then through certain means into the uterus of the sow, so that the sow pregnant a technology.
When artificial insemination is not very skillful, the conception rate using artificial insemination will be lower than assisted mating.
At present, artificial insemination is used more often in pig farms to carry out one artificial assisted mating and one or two artificial insemination in one heat period, artificial assisted mating is carried out in the morning, artificial insemination is carried out in the afternoon, and artificial insemination is carried out in the morning of the next day, and the fertilization rate is up to 93% on average.
The speed of insemination should be slow rather than fast, 5 minutes to 8 minutes is appropriate.