How to prevent sows from estrus

January 13, 2020

First, we must first find out the cause of non-estrus. Due to the variety, boar stimulation, seasons, weather, breast-feeding time, number of nurses, lyrical conditions, nutrition, and management, sows have different estrus conditions. It is particularly important for the feeding and management of lactating sows, such as common poor nutrition causing sows to be thin or having too good nutritional levels to cause sows to become over-fat, and then take appropriate control measures against the causes.
Second, delaying the sow’s puberty, using it to transfer to other housing or places, increasing contact with the boar, increasing its living space or feeding some green material. In addition, 300-500 IU can also be injected intravenously or intramuscularly.
Third, the weaned sow subcutaneous or intramuscular injection of pregnant horse serum or whole blood 15 ~ 25 ml, or intramuscular injection of pregnant hormone serum gonadotropin 1000 ~ 1500 international units, 1 ~ 2 times. Alternatively, chorionic gonadotropins may be administered intravenously or intramuscularly in 500 to 1000 IUs, repeated one to two days apart. Fourth, intravenous or intramuscular injection of follicle stimulating hormone 100 to 300 international units, every other day, usually 3 to 4 times, not only can promote ovulation of sows in eager sows, but also improve the conception rate and childbirth rate.

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