Management of weaned sows It is very important to observe the sow's mental status in the breeding house. All weaned sows use sophisticated feeding techniques, and weaned sows cannot enter breeding houses without meeting appropriate body conditions. If the sow is too fat or too thin, it can't be regular or estrus at all.
In cases where the weaned sow does not reach the mating condition, do not breed the first condition after weaning. In this case, the sow is allowed to freely feed for a period of time and then to be mated when the body condition is suitable for breeding. In general, these sows are mated in the second love period from 18 days to 24 days after weaning.
The weaned sows go to the breeding house, but cannot reduce the water and feed. The sows on the day or two after weaning eat very little, but if they want to eat, they must have the opportunity to feed. The method of controlling the material does not induce early estrus or reduce mastitis in sows. Instead, it may reduce ovulation rate.
On Thursday, the weaned sows were transferred from the delivery room to the breeding house. The weaned sows entered the merline column. Feeding at the large scale did not increase the proportion of weaning estrus. Weaning is a stress and other inappropriate stresses should be avoided. Sows with two or more births must be bred during the estrus from Monday to Wednesday. Sows that are estrus on Thursdays, Fridays, Saturdays, and Sundays one week after weaning are generally less productive than estrus sows from Monday to Wednesday. A sow is going to miss a love period and then mating.
Management of gilts When newly-replaced gilts are transferred to breeding houses, gilts should be kept at the reserve for at least 27 days so that they can better adapt to the environment and reach the age of the newly-matched bred. The pigs cover an area of ​​1.4m2 to 1.5m2 per head. The statutory gilts reach the second and third periods of 7 months or 7 months or more and weigh more than 140kg. The gilt's predicted breeding date will be recorded on the breeding card. If the reserve breeder swarms for some reason, the card will be transferred with the breeder. The sow in the reserve must press back every day to check its estrus status. When the estrus is found, record it on the card. To track sows’ estrus time, it is very easy to find that the sow is in heat again.