The first phase (6.5 to 7.5 months of age) 1. Boar stimulation: XY good adult boar is more effective. The specific approach is as follows: Let the breeding sows be kept in the neighbourhood boar; let the adult boar chase for 10 to 20 minutes in the sows to be placed, so that the male and female pigs have direct physical contact. The time for the chase is appropriate. Too long will cause too much damage to the sow. 2. Stimulation of estrus sows: the estrus-producing gilts and the weaned gilts are kept in one column. After a few days, the estrus sows will continue to chase and climb the sows that are not estrus, so that the pituitary gland produces follicle-promoting maturation. Promote estrus. 3. Appropriate stress: Mild stress can increase the body's excitability; excessive stress can cause damage to the sow's body. The specific approach is: mixed columns, put 5 or so per column, require body condition and similar weight, fight when the enemy forces; sports generally put in a dedicated sports arena, there is time for proper eviction; hunger aphrodisiac, for partial fat mother Pigs can limit the material for 3-7 days, feed about 1Kg daily, drink plenty of water, and then feed freely; vehicle transportation in the yard is also effective, but damage to the limbs and feet should be prevented. 4, environmental control: summer heatstroke cooling, as much as possible to flush more than 30 °C; winter cold to keep warm; control the house humidity, especially the floor. The second phase (7.5 to 8 months of age) uses a comprehensive treatment program for transfusion death. Dead sperm production: Ordinary semen or poorly vibrated semen is diluted with BTS (4 billion/bottle, 100 ml, antibiotic plus a large amount) and 2 drops of non-oxidizing disinfectant are used to kill all the sperm (it is also possible to freeze and thaw again. ). Loss of spermatozoa: 20 IU of oxytocin is added to the semen before insemination, placed in the positioning bar for the first 3 days after finishing dead sperm, restricted to feed, 2 kg/day, and placed in the gymnasium for exercise after 3 days (when the weather is hot , Sooner or later, half an hour/time), and put in a boar to catch up. After the sport, drive into the breeding homes column to conduct aphrodisiac supplementation (free intake), add appropriate nutrient drugs (such as VE powder or amine-based vitamins) and antibacterial and anti-inflammatory drugs (such as lignocin) in the feed. After the death of spermatozoa, estrus usually begins in 5 to 15 days. Notes: 1) Some sows in the process of estrus have poor or no estrus status due to various reasons. These sows only perform timely insemination based on the degree of swelling, color, and mucus concentration of the vulva, and at the same time insemination. Chlorprostinol was injected 2 ml (or promoted No. 3) one hour before, and artificial insemination (oxytocin 2 ml) was used. 2) If the gilts after estrus and estrus are fed to the gilts after diarrhea, they should be treated with antibiotics within 3 days of breeding, and 2 ml of cloprostenol should be added to raise the sows. The pregnancy rate and delivery rate. The third stage (8 to 9 months of age) can use hormone aphrodisiac. Reproductive hormone deficiency is an important cause of sows not able to run normally. After all of the methods described above have been used, a small number of sows that are still estrus can finally use the method to process it 1 or 2 times, and no estrus can be eliminated. Breeding farms prohibit the use of hormone aphrodisiac. The first phase of the two-phase treatment of the breeding farms is 6.5 to 8 months old, and the second phase is 8 to 9 months old. The specific method is the same as described above. The third stage can be used hormone aphrodisiac. The specific methods are as follows: 1, Cloprostenol 2ml; 2, Luntin 2ml; 3, PMSG1000IU, HCG500IU; 4, PG600 treatment once, 1 head. Is it okay for gilts to be estrus for the first time? For more than 8 months, the sow had only had her first estrus (I hadn't observed it before, I didn't know if it was oestrus or estrus). The estrus was more apparent yesterday. I started to crawl across other pigs. In response, I was afraid that I wouldn’t be estrus when I missed this time. Please give artificial insemination at noon and match it again in the morning. I heard that the first heat was not suitable for breeding, but the age of the pig (more than 8 months) Weight (200 kilos) are almost the same, and what's wrong with it? Answer: It is more appropriate for the estrus to be bred in the second and third breedings. The first estrus is likely to result in fewer ovulations and fewer litters. Is it now possible to cooperate with estrus drugs for aphrodisiac? The sow had been sent out several times for seven months. It did not seem that she had ran up. The last time it was more obvious. To go to breeding, the boar would not be allowed to climb. Just give up. Now a cycle has arrived. Yesterday I found some red and swollen, still red and swollen today, but there is no white secretions. Will I now be able to cooperate with estrus drugs for aphrodisiac, so that her estrus completely? Answer: Now that heat has started, I don't think it is necessary. You can't try it with a boar and tell you a trick. You look at the sow's pussy. Our Qingzhou people call it sons, some upturned, some drooping. The upturned thing is that the white things are not obvious, and sagging flows out, and artificial insemination is not possible. New sows are best bred after estrus 3 times. The first two estruss do not match the species. The third estrus starts breeding. First-time sows are generally bred after 5 days of estrus. Sows are suitable for mating reaction time is: genital fluid mucus, standing still when touched, tail tilt, with the performance, often follow people go. See the form of the evening for the first time, early on the next day. It is best not to use drugs for aphrodisiac.
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