Let the sow produce calves during the day 1 to 2 days (112 to 113 days after pregnancy) from 8 to 8 am in the sow, and intramuscularly injection of 1 to 2 ml of prostaglandol injection in the neck of the sow. 98.2% of sows gave birth in the daytime during the day and the effective rate was as high as 100%. The survival rate of piglets increased from 90% before the test to more than 98%. Sows are allowed to give birth in the spring and autumn in the spring and autumn. Avoiding severe cold winters and hot summers can increase the survival rate of piglets and achieve five births in two years. The first child can be arranged for breeding from November to December, and calving from March to April the following year. The second child is scheduled to breed in May to June and the child is born from September to October. Raising the calving rate of sows 3 days after weaning to estrus, the sows are fed 400 mg of vitamin B, 400 mg of carotene, 200 mg of vitamin E per day, and halved after mating, and then fed for 3 weeks. Prolific å´½ 2 to 3 heads. When the sow is diagnosed with early pregnancy, the sows are mated for 3 to 4 weeks, and the thumb and index finger press the 9th thoracic vertebra to the 2nd lumbar spine. If the back is slightly arched, the conception will be conceived. The dorsum of the sow will not be conceived. The sow's expected date of birth is estimated to be 108 to 120 days (average 114 days). Calculate the method of sow due date: Adding dates plus 3 months plus 3 weeks and 3 days. If the sow mating date is April 20, the expected date of birth is 4+3=7 (months) and 20+21 (3 weeks)+3 (days)=44 days, which is August 13. Sows artificial aphrodisiac For long-term non-estrus sows, 20 milliliters of boar semen were used. The sperms were slowly transferred to the uterus of the sow by the vas deferens, and the vas deferens was continuously rotated and twitched back and forth. At the same time, sprinkle a small amount of semen on the nose of the sow. Strengthen feeding, and estrus can be used for breeding within 4 days. Or sows weighing 75 to 100 kilograms of intramuscular injection of human chorionic gonadotropin 100 units, or subcutaneous injection of human serum 5 ml, generally 4 to 6 days to heat. Sow prolactin sow the postpartum placenta of the sow with clean water, cut into small pieces of 4 to 5 cm in width and 2 to 3 cm in width, and cook for 1 to 2 hours in slow fire, stir the fetal clothing into the gruel, from the postpartum From the second day, sows are fed twice a day until feeding. The sows that have been suffering from short-acting milk have been fed with 30 grams of ginseng, 20 grams of angelica, and 30 grams of decoction of astragalus, which are fed together with cooked tires. Or use 250 grams of kelp, soak up and cut fine, add 100 grams of lard decoction, fed every day sooner or later, once every 2 to 3 days, the amount of milk secretion can be greatly increased. Timely breeding is the key. Under normal circumstances, the appropriate breeding age is: local breeds 6 to 7 months of age, weighing 50 to 55 kilograms; hybrid generation sows 8 to 9 months of age, weighing 65 to 75 kilograms; exotic lean species 9 to 10 months old, weighing 110 kg. Adhere to the "old with early, small with the evening, not the old with the middle." Normally, the sow swollen and swollen sows begin to recede 19-30 hours after the sow reaches heat, and a filiform mucus escapes. When the sow's hindquarters stand still, they can breed. Artificial insemination, strict disinfection. Intensified fetal maintenance measures should be strengthened for the ease of abortion of sows 9 to 13 days after mating and 21 days before delivery. Supply concentrates rich in protein, minerals and vitamins and succulent green feed. Frozen and rotten spoiled feeds are forbidden. Abortion aura can be used Astragalus 100 grams, Atractylodes, licorice, Angelica, Angelica, Astragalus, Amomum each 50 grams, 75 grams Dipsacus, thick fried, 2 daily, for 3 days. fresh breaded squid tentacle Squid Tentacle,Breaded Squid Tentacle,Fresh Squid Tentacle,Fresh Breaded Squid Tentacle Zhoushan Junwei Aquatic Products Co., Ltd. , https://www.junweiaquatic-intl.com
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