Several Methods For Identification Of Early Pregnancy In Sows

According to the sow estrus cycle: 18 to 20 days after breeding can be used for boar trials, if there is no response, it can be basically determined that pregnancy.

According to the vulva and behavior changes of the sow: the pregnant sow vulva shrinks, the color is pale, and the appetite is strong, the spirit is quiet, the eyes are clear, and the walking is steady.

Veterinary B ultrasound scanner: According to the image of the veterinary B-ultrasound, it can quickly and accurately determine whether the sow is pregnant.

Rectal palpation: Applicable to large sows. After disinfection, the hand is inserted into the rectum of the sow, and the feces are removed from the rectum and the uterus is touched. There is amniotic fluid in the uterus of pregnancy, and the uterine artery is powerful. There is no amniotic fluid in the uterus that is not pregnant, the elasticity is poor, and the uterine artery is weak. The accuracy of this method is as high as 95% or more.

Sex hormone injection: 18 to 20 days after breeding to inject sex hormones , empty pigs can generally estrus within 2 days, pregnant pigs do not respond.

Traditional method: take 10ml of sow morning urine into a transparent glass, put a few drops of vinegar, iodine, and simmer on alcohol lamp to boil. Red is pregnant, beige or brownish green and color disappears quickly after cooling which is non-pregnant.