The large-scale use of artificial insemination technology has accelerated genetic improvement, reduced the cost of raising boars, and reduced the transmission of contagious diseases and genetic diseases of male sows. However, in pig farms where artificial insemination is used on a large scale, we often see the following phenomena: some sows are not in estrus, delayed estrus or not fertile after estrus breeding, and when such phenomena occur, the reproductive system status of pigs can be observed by B-ultrasound. Under normal circumstances, under the condition of good feeding management and sound immune procedures, weaning sows will appear in estrus successively after 3 days of weaning. The reason for this phenomenon.

Pig ultrasound

The stillbirth, mummy, fetal coat and lochia in the postpartum reproductive tract and uterus of sows were not completely discharged, and the reason could be well analyzed by B-ultrasound. Sows have a history of dystocia or assisted labor. Dystocia can cause inflammation of the sow's uterus and reproductive tract, and artificial midwifery can cause infection of the sow's reproductive tract by pathogenic microorganisms. The results can be well diagnosed after B-ultrasound examination of the pig's uterus.

Sows have a record of continuous return due to pus discharge. In order to reduce this phenomenon and improve the sow conception rate and litter situation, it is very important to use porcine B-ultrasound to check the uterus after delivery. Under normal feeding management and sound immune procedures, we will conduct drug treatment before breeding to observe the effects on estrus, conception and litter situation of sows, and use porcine B-ultrasound to observe the condition of uterus.

The use of artificial insemination technology has changed the transport route and living environment of sperm. When a boar copulates naturally with a sow, the sperm is not drastically altered in the environment and can enter the sow several times over a period of time, thus optimizing fertilization.

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