2. Methods to improve the farrowing rate of sows. During the period from 3 days after weaning to estrus, each sow was fed vitamin B 1400 mg and vitamin E200 mg every day. After mating, the dosage is halved, and feeding is continued for 3 weeks, with an average of 2-3 litters. ② On the 30th and 90th day of pregnancy, pigs were injected with human vitamin B 12 1 box (2ml× 5 pigs) respectively, with an average of 2 litters.
3. Methods of controlling sow delivery in spring and autumn. Scheduling the delivery time in spring and autumn is beneficial to the postpartum rehabilitation of sows and the survival rate of piglets. 1 nest can be arranged to breed in11-65438+February and give birth in March-April of the following year; The second nest is arranged for breeding in May-June and giving birth in September-65438+10.
4. Methods of controlling sow farrowing during the day. Sows give birth at night, which is not easy to care for. Sows will crush piglets, and cold piglets will freeze to death in winter. According to experiments, more than 90% sows can give birth during the day as long as they are fertilized at 8 or 9 in the morning.
5. Early diagnosis of sow pregnancy. After 3-4 weeks of breeding, the sow can stand upright, caress the whole body to make it fearless, and then press her back between the ninth thoracic vertebra and the second lumbar vertebra with her thumb fat and forefinger. If her back is slightly arched, she will be pregnant, and if her back is sunken, she will be pregnant. The accuracy of this method is over 95%.
6. Estimation of sow's expected date of delivery. The normal gestation period of sows is 108- 120 days, with an average of 1 14 days. There are two methods to estimate the expected date of delivery of sows: mating date plus 3 months, 3 weeks and 3 days. If the sow's breeding date is April 20th, then the expected date of delivery is 4+3 = 7 months, 20+2 1 (3 weeks) +3 (days) = 44 days, that is, August 14 days. Breeding month +4, date -6, that is, 4 (month) +4 = 8 (month), 20 (day) -6 = 14 (day).
7, pig artificial aphrodisiac method. ① Sows weighing 75 kg- 100 kg were injected subcutaneously with 1000 unit of chorionic gonadotropin or 5 ml of pregnant horse serum for human use, and estrus could be achieved after 4-6 days. ② After oral administration of 50 grams of Epimedium, 500 grams of Angelica sinensis, 500 grams of Leonurus japonicus and 250 grams of Ai Chen decoction, estrus can occur within 1 week.
8, sow breastfeeding method. Rinse the postpartum placenta with clear water, cut it into small pieces with a length of 4-5 cm and a width of 2-3 cm, cook it with slow fire for 1-2 hours, and mix the placenta with soup to make porridge. From the second day after delivery, feed it twice a day until it is finished. Sows that have been short of milk are fed with 30 grams of Akebia Akebia, 20 grams of Angelica sinensis and 30 grams of Huanghua soup together with cooked fetal membranes, and the effect is excellent. 250g kelp, soaked and chopped, decocted with lard 1 00g, fed1time every morning and evening for 2-3 days, the milk secretion will be greatly increased.
9. Simple treatment for sow mastitis. Flos Lonicerae, Fructus Forsythiae, Herba Taraxaci, Herba Violae, Rhizoma Anemarrhenae, Cortex Phellodendri, Radix et Rhizoma Rhei, and Radix Glycyrrhizae are all ground into powder, and then mixed into porridge for oral administration, and cured in 2-3 doses. Angelica sinensis, Radix Rehmanniae, Herba Violae, Flos Lonicerae, Radix Paeoniae Rubra, Prunella vulgaris and Glycyrrhrizae Radix each 65438±05g, and the curative effect is very good.
10, simple treatment of piglet dysentery. Each piglet is prepared into porridge or corn soup with 6 grams of grass paste (pot bottom ash) for oral administration, and recovered within 10 hour after eating, and the effective rate is over 95%. ② 20 g of Agrimonia pilosa, 20 g of Plantago asiatica, 20 g of Sanguisorba officinalis, 20 g of Ai Chen, 20 g of Lygodium japonicum, 20 g of garlic, 20 g of ginger and 20 g of Glycyrrhiza uralensis Fisch were decocted in water and then fed to sows for 3 times 1 for 2-3 days.