Six strokes to increase sows' "three rates"

Yan Yali, a large farmer in Yaozhang Village, Yaoji Street, Huangpi District, Wuhan, China: My wild boar breeding farms have a good market, but the sows' breeding rate, quasi-fetal birth rate, and survival rate of piglets are not ideal, which greatly affects income. In response to Tu Yali's question, reporters specially connected breeding experts from the Yizhou Township Animal Husbandry Service Center in Jianshi County to Xu Xuyuan and Xu Jianhong and asked them to tell the majority of pig farmers how to increase the sow’s “three rates”. Reasons The low "third rate" of sows is affected by many factors such as sow feeding status and breeding time. Measures 1. Do a good job of feeding and management of sows. When sows are bred for 10 to 20 days prior to breeding, feeding 1 to 2 kg of high-quality feed can stimulate multiple ovulations of sows. After sows are bred, normal daily feeds can be restored to minimize various stress factors; postpartum sows Do not make it too thin or too fat, otherwise it will delay the heat. 2. Control the timing of the sow. The mating sow should have reached the standard of body weight and age, and can be bred after 2 or 3 estrus times. 3. Artificial aphrodisiacs improve the rate of allocation. For long-term non-estrus sows, 20 milliliters of boar semen was used. The seminal fluid was slowly inserted into the uterus of the sow by the vas deferens, and the vas deferens was continuously rotated and twitched back and forth, and a small amount of semen was sprinkled on the nose of the sow. Strengthen feeding, and estrus can be used for breeding within 4 days. Or sow 75 to 100 kg weight sows intramuscular injection of human chorionic gonadotropin 100 units, or subcutaneous injection of pregnant horse serum 5 ml, generally 4 to 6 days to heat. 4. Early weaning to allow the sows to be bred earlier. Piglets were weaned on the 28th. Three days after weaning to estrus, sows fed 400 mg of vitamin B, 400 mg of carotene, 200 mg of vitamin E, and halved the dose after breeding, and then fed 3 weeks. Each baby can have more than 2 to 3 calves. head. 5. Implement "double matching" to increase the quasi-tyre rate of sows. That is, a sow can use two boars for breeding. Rural free-range households can use two breeding methods, and it is advisable to use 10 hours at two intervals. If artificial insemination techniques are used, attention should also be paid to the site of insemination and the number of spermatozoa that are sufficient to enter. At the same time, review and supplement should be done. 6. Make the sow productive during the day. At 8 to 9 o'clock in the morning 1 to 2 days before the sow's labor, injection of 1–2 ml of prostaglandol injection into the neck of the sow allows 98.2% of the sows to give birth during the day and has an effective rate of up to 100. %, the survival rate of piglets increased from 90% to more than 98%. At the same time, we should avoid the cold winter and hot summer, so that sows in the spring and autumn can also improve the survival rate of piglets.

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