When is the best day for sow breeding after estrus?

First, the performance of sows before estrus

Yin swelling

At the beginning of estrus, the sow's vulva is in a state of high redness and swelling, and the vulva is bright red and moist. If the vulva swelling subsides slightly, it turns from bright red to slightly dark red, and the vulva is slack and drooping, except for the vulva fissure and its vicinity, most of the vulva is dry; The vulva of the first mating sow changes from high swelling and luster to wrinkles, and when the finger presses the vulva, the feel changes from hard to soft. At this time, sows are quiet, like to be close to people, have a strong desire to mate, and stand still when pressing their backs, which is the best time for breeding.

Mucus condition

During estrus, the mucus secreted by sows is clear and thin, and cannot be drawn into silk between the index finger and thumb. When entering the peak of estrus, the mucus becomes sticky and turbid, and it can be drawn into 0.5 cm of silk by slowly pulling between fingers, and the feeling of rubbing between fingers is extremely smooth. At this time, the mucus discharged from the vulva has dried and scabbed, and sometimes there are mats and other sundries, which is the best time for reproduction. (After delivery, sows may not see mucus, and sometimes they can see a small amount of mucus from the vulva when pressing their backs. You have to open the vulva and take a small amount of mucus for examination.

Vaginal mucosa condition

Sows in estrus are allowed to touch their genitals. At this time, you can open the vulva and check the vaginal mucosa of the sow. At the beginning of estrus, the vaginal mucosa of sows is flushed, and at the peak of estrus, the mucosa is swollen, shiny and slightly dark red, which is the best time for breeding.