When is the breeding time of sows? What can be done to prevent it from miscarriage?

Sows are female pigs who have given birth to piglets, and there are many kinds of sows. Mating is extremely important in the process of raising sows, because it is the basis of commercial pig production. When is the breeding time for general sows? What can be done to prevent it from miscarriage?

1. Basic introduction of sows

1. Breeds of sows

At present, the sow breeds in China include Taihu pig, Landrace pig, large white pig, Erhualian pig, Jinhua pig, Duroc, Pitland, Rongchang pig and so on. The price of each breed is also different. Among them, the price of Taihu sows is 1500 yuan per pig, the price of binary pigs and Landrace pigs in Shuyang, Jiangsu Province is 1000 yuan per pig, and the price of Jiangsu Meishan pigs is 1000 yuan per pig.

two。 The selection method of sows

The main results are as follows: (1) choose large-scale and high-level farms to buy sows with lean meat percentage up to the standard of lean pigs, rapid growth and development, good reproductive performance and good adaptability to local feeding conditions.

(2) choose sows with large litter size, early sexual maturity, tolerance to rough feeding, strong adaptability and obvious symptoms of oestrus.

(3) in addition, from the aspect of appearance, the sows purchased should have no obvious defects in the external genitalia of sows, the number of nipples should not be less than 7 pairs, the nipples should be evenly spaced and well developed; in addition, they should be healthy and grow fast. Disease-free, free to walk, early puberty.

Second, when is the breeding time for general sows?

1. If you want sows to have more and better offspring, the time of mating is also very important. In general, ovulation in sows usually occurs 24-48 hours after the beginning of estrus, the peak of ovulation is about 36 hours after estrus, and ovulation lasts for 10-15 hours or a little longer. The time for the egg to maintain the fertilization ability in the reproductive tract is 8-10 hours, while the sperm can generally maintain the fertilization ability for 10-20 hours in the reproductive tract of sows. Therefore, mating should be carried out 2-3 hours before ovulation in sows.

two。 In general, the sow carries out the second mating 8-12 hours after the first mating. If the swelling of the vagina of the sow begins to subside, the vulva begins to crack, and the color changes from flush to light red, it is the appropriate time for mating.

Third, what can be done to prevent sow miscarriage?

After successful conception after sow mating, the most important thing is not only to provide adequate nutrition, but also to prevent miscarriage. Here are a few key points:

1. Feed the sows scientifically, maintain the breeding condition of the sows, keep the sows 80% fat, feed them with nutritious formula feed at full price, ensure the nutritional needs of the fetus, and at the same time, the Bonchi sow barn should be dry and clean.

two。 Can be properly fed to sows green succulent feed and wheat bran and other laxative feed to prevent sows from constipation.

3. Must not feed mildew deterioration and toxic, irritating feed to sows, do not feed acid silage and alcohol-containing lees, do not feed frozen feed.

4. The purpose of breeding sows is to prevent inbreeding and eliminate sows with genetic defects.

5. Sows should have diarrhea, colds and high fever during pregnancy. In addition, collision, squeeze, chase and whipping should be avoided during pregnancy.

These are all the contents of the editor of Tuliu.com today, and the broad masses of farmers must pay attention to these points.