Control the sow's daytime birth method

More than 70% of sows in production are born at a quiet time at night. The sows are born at night. Because there is no nursing staff or fatigue due to the confinement workers, the number of abnormal deaths such as squeezing and suffocating sows at night is significantly higher than the number of sows that are born during the day, seriously affecting the rearing of sows. Sows' economic benefits. If the sow can be born during the day, both to facilitate monitoring and management, but also easy to increase the temperature within the house, will definitely improve the survival rate of piglets. Here are two ways to control sow's daytime calving. Method one: Injecting chloroprepronol into pregnant sows. Accurately calculate the expected date of delivery based on the average 114-day period of sow's gestation. According to the sow’s breast changes, the vulva is swollen, the abdomen hangs down, and the eating is reduced. The sows are given on the day before the due date (around the 113th day) from 8 to 10 am. Intramuscular injection of cloprostenol injection 2 ~ 3 ml. Tests have shown that by intramuscularly injecting this preparation around 8:00 in the morning, more than 90% of sows can be delivered in the daytime. This method has no adverse reactions to sows and piglets. Method Two: Change the traditional breeding time. In the past, the timing of estrus sow breeding was the morning or afternoon of the next day after estrus. In order to allow the sow to give birth during the day, according to the ovulation law of sows, the time of mating insemination can be adjusted to the morning of the next day of sow estrus or 8 to 9 o'clock on the morning of the third day so that 90% of sows can be bred. Litters during the day.

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