When is the best time for sows to mate and when is the best time for sows to mate for the first time?

At the beginning of 26-46 hours of standing estrus, the sow will ovulate about 95% of the eggs at the same time, and the survival time of the eggs should not exceed 6 hours, should be checked every day, and the general estrus can be mated. Sows should not be mated when they are in estrus for the first time. They should wait until 2-3 times of estrus before mating.

The best time for sows to breed

1. Generally speaking, when mating sows, it is necessary to choose the appropriate time, so that the efficiency will be higher. Usually, about 95% of the eggs will be excreted at the same time within 26-46 hours of standing estrus. The survival time of eggs is no more than 6 hours, and estrus can be checked every day. If you check twice a day, you can rebreed half a day later.

2. For non-estrus sows, levamisole mixture can be used to deworming sows, 16 tablets per sow, once a day for 5 days. Generally, obese sows need to be reduced by half, and the whole sows are fed more green fodder, while the thinner sows should be fed more feed to increase nutrition and improve fat.

2. When is the best time for the first mating of sows

The main results are as follows: 1. Generally speaking, sows can begin to mature at the age of 3-6 months, but the maturity time of each pig breed is different. generally speaking, breeding is not recommended when the sow is still very young, that is, it is not suitable for breeding at the first estrus. Wait until 2-3 times.

2. The average oestrus cycle of sows is 21 days, and each oestrus lasts about 3-5 days. The better mating time for newly mating sows is generally 12 hours after standing for the first time, 8-12 hours after repeated breeding, generally 10 hours after standing reaction can be mated, and then re-breeding, 8 hours apart.

3. Characteristics of estrous cycle of sows

1. Proestrus: sows will behave restlessly, vulva swelling, and change from yellowish to red. Generally, backup sows will be more obvious, vaginas will secrete mucus, and its viscosity will begin to increase. Sows are not allowed to ride on their backs at this stage. 2.7 days on average, insemination is not recommended.

2. Mid-estrus: an average of 2.5 days, characterized by swelling of the vulva of the sow, at the same time, the red begins to fade, the secretion becomes thick, and the viscosity begins to increase. At this time, the sow is allowed to press the back without moving. When pressing the back, the sow's ears are upright and backward. The hind legs began to tighten.

3. Metestrus: 1-2 days after estrus, the genitals of estrus sows completely returned to normal, and boars were not allowed to climb.

4. Diestrus: 13-14 days, sows completely return to normal state, and boars are allowed to climb only during estrus, or standing reaction. This sexual behavior can be used as an important indicator of timely insemination in sows.