How to promote sows' multiple births

Strengthening sow rearing management

Sows should be fed with roughage during the rest period, mid-pregnancy, and post-lactation period, and be fed properly with green feed. Sows should have adequate supply of protein, minerals, and vitamins during the early stages of pregnancy, late pregnancy, and early breastfeeding. At the same time, it is necessary to provide the sow with a relatively stable living environment, and to minimize the stress response caused by transfer, drive, and the like.

Arranging the breeding season of sows reasonably

It is best to start breeding between April and May, and to breed again from September to October. This will allow sows to breed in the spring and autumn seasons to avoid cold and hot weather.

Timely breeding

Under normal circumstances, from 19 hours to 30 hours after the estrus, the swollen area of ​​the vulva begins to fade, and filiform mucus overflows. After pressing the hindquarters of the sow, the sow will stand still, and breeding should be done in due course. First-born sows are to be bred at 7 months to 8 months of age and weighing more than 100 kg.

Breeding methods and artificial insemination

Must be used with dual allocation (that is, the appearance of waiting for the first match, 12 hours apart again), can significantly increase the sow fertility rate and the number of births. If artificial insemination technology is used, semen of healthy boars should be used. Each milliliter of semen needs more than 40 million sperms, and sperm motility is above 0.6. The equipment should be strictly disinfected and the second insemination should be performed 12 hours after the first insemination.

Strengthening childbirth management

Sows are susceptible to miscarriage within 9 days to 13 days after mating and before 21 days before delivery. The management of the miscarriage should be strengthened. Try to feed them with protein-, mineral-, vitamin-rich concentrates and green, succulent feed. Do not feed frozen, Bad rotten spoilage feed. Pregnant sows should try to avoid mechanical stimuli such as crowding, biting, slipping, whipping, and scaring. Farm breeding must have detailed records to avoid inbreeding. The prevention and treatment of epidemics should be well done in the pig farms. In particular, the prevention of Japanese encephalitis, influenza, and brucellosis should be well done and timely treatment should be found. Those who have abortion abortions should immediately take progesterone 15 mg to 25 mg, and take sedation orally to stabilize the fetus.

Do a good job of giving birth to sows

The sow is cleaned 5 to 10 days before delivery and sprayed with 10% to 20% of fresh lime water. The sows were sterilized with 2% to 5% of the pregnant women's abdomen, breasts, and vulva before labor. After the sow has given birth, she must remove the mucus from the nose of the piglet in time and tear off the membranes. For fake baby pigs, tapping the chest, lifting the hind limbs, or irritating the nose with alcohol can be used for first aid. For the difficult-to-produce sows to do a good job midwifery, so that the sows can give birth. In addition, heat preservation is especially important for newborn pigs. When the pigs are born, the temperature of the tillers must be maintained at 26°C to 32°C.

Sows have to breed during lactation

Piglets should be weaned at 35 days to 40 days of age. Under normal circumstances, sows are fed aphrodisiac for sows 3 to 5 days after weaning. After the sow has estrus, it must be bred immediately to make it pregnant during lactation to increase the number of births per year.

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