Pig farmers must see! How to make sows prolific?

Among pigs, female pigs of any age who have given birth are called sows. There are many kinds of sows, including black sows, white sows and spotted sows. There are also some differences in their living habits. For pig farmers, sows give birth to more babies, the benefit can be doubled! So how to make sows prolific? In recent years, the annual productivity of sows is low, which has become a bottleneck restricting the production and development of pig industry in China.

First, cultivate excellent reserve sows

The main results are as follows: 1. The reserve sow breeds are required to have excellent genetic performance, in line with the characteristics of breeds or strains (such as Landrace, large White, Duroc), medium to high physical condition, good physical development, long physique, more than 6 pairs of effective nipples and neat and uniform arrangement, tame character, good motherhood, strong stress resistance, fast feeding and no picky eating. It has the genetic properties of fast growth rate, high feed reward, thin backfat, high lean meat percentage and large litter size.

2. To raise reserve sows, feed freely before reaching 60kg body weight, restrict feeding after 60kg, feed about 2kg per head per day, and add green feed, which can not make the body condition too fat and affect the reproductive performance of sows. Under good feeding and management conditions, the reserve sows can be in estrus for the first time at the age of 6 months, and the demand for nutrition of the reserve sows increases. It is suggested that the Livestock King should be added to the diet from the age of 6 months. Effectively supplement trace elements and functional minerals needed for reproductive development of reserve sows, promote the development of ovary and uterus of reserve sows, and achieve physical and sexual maturity.

II. Rational arrangement of mating season

Mating in October, giving birth in January to February of the following year, rebreeding in February to March, and giving birth in June to July. With this arrangement, sows can produce 2.5 litters a year and 5 litters in two years (up to the international advanced pig-raising level). Local breeding sows should be bred at 2mi 3 days after estrus, imported sows should be mated in the afternoon or morning of the second day after estrus, and hybrid sows should be mated in the afternoon of the second day after estrus. When mating, follow the principle of "the old match early, the small match late, the old and the middle". Years of practice has proved that mating before feeding in the morning and evening can ensure a conception rate of 85%.

3. The following measures can help reduce the mortality of large litters of piglets

1. Pregnancy feeding: adding fat to the feed of sows during late pregnancy and lactation can increase the yield of milk and the fat content in colostrum. It can increase the survival rate of piglets under 1 kg by 17%. But paying too much attention to backfat can have a negative effect.

2. Delivery monitoring: if the birth interval of the piglet is more than 30 minutes, you should pay attention to this sow. It can be dealt with through routine midwifery and emergency midwifery. Careful use of oxytocin will have an effect on sows. Low-energy piglets should help fix their nipples and give them enough colostrum.

3. Temperature: too high temperature will reduce the feed intake of sows. If the temperature is too low, the piglets will lower their body temperature and reduce the intake of colostrum. If the piglets are over 2 days old, the temperature in the delivery room should drop to 20 degrees.

4. Colostrum: piglets need to eat enough colostrum 6 to 12 hours after birth. The immune system of piglets is not yet mature, so their resistance mainly depends on immunoglobulins in colostrum. The number of piglets brought by sows should not exceed the number of effective nipples. The litter size of first-born sows can be limited to 10. Fourteen days later, we began to teach the trough material.

5. Foster care: foster care should be carried out as soon as possible after the piglets are born. Adjust the fence within 24 hours so that the piglets brought by each sow have a similar weight.

6. Squeeze: piglets like to snuggle together next to sows in the first three days after birth. It is recommended that sows be kept in an incubator when they are fed. Let the sows out after eating or within an hour.

Fourth, we should also pay attention to:

1. 60% of fetal growth occurs in the last 30 days of pregnancy.

2. The temperature in the delivery house before the birth of the first piglet should rise to 24 degrees.

3. Let the sows give birth within 4 hours, and the mortality rate of piglets more than 5 hours doubles.

4. In addition to stillbirth, crushing is also one of the important causes of piglet death.

5. Good monitoring and nursing can reduce pre-weaning mortality by 18% and stillbirth by 50%. But excessive noise can disturb sows, prolong childbirth and increase mortality.

6. Foster care can reduce the mortality rate before weaning by 40%.

7. The antibody in colostrum will drop to the first 50 within 6 hours.

Attached: how to deliver babies in sows

Prepare hot water, basins, towels (wipe sows' breasts clean when giving birth), paper (for wiping mucus from the body and mouth of newborn piglets), hemostatic forceps, scissors (for cutting piglets' umbilical cord), tooth scissors (for cutting piglet teeth), potassium permanganate (for disinfecting sows' breasts and genitals), iodine tincture (for disinfecting piglets when cutting umbilical cords), and incubators.

It is best for a sow to give birth naturally without artificial midwifery, just wait for the piglet to be born. If the sow is difficult to give birth, it is only necessary to give birth: first, dilute the hand with potassium permanganate and put it into the permanganate solution to wash it, then reach into the sow's uterus and touch the piglet's hind feet and slowly pull it out.

Sows in the production process as long as the interval of more than 2 hours is a dystocia, need to hire a professional veterinarian!