Increasing the conception rate and litter size of sows, and being able to live more and more vigorously is the key to improving the efficiency of pig raising. It is also what farmers want, and how can they be done? The Hui Nong School shares the following technologies. 1. Choose a good breed boar Choosing a good breed of boar is the first step in ensuring that sows are born and prolific. Choose boars that are physically strong, sexually active, and lively. Such boars have good semen quality and strong sperm motility. Whether it is artificial insemination or natural mating, the effect is very good. 2, breeding time and estrus identification To master the breeding time of estrus sows, we must pay attention to the estrus time of the sow and the ovulation time of the sow. The sow's estrus is apparently uneasy at the beginning of the estrus, loss of appetite, ringing, swelling and swelling of the vulva, mucus outflow, tearing due to sexual excitement (from the corner of the eye to the corner of the mouth), close to the boar. Ovulation begins 25 to 36 hours after estrus and generally lasts 10 to 15 hours. The eggs excreted by the sow can maintain a fertilization capacity of 8 to 10 hours in the fallopian tube. It takes two to three hours for the boar to reach the fallopian tube. It is good at maintaining the fertilization ability of 10 to 20 hours in the reproductive tract of the sow. Therefore, mating should generally be carried out 20 to 30 hours after the start of estrus. At this time, the sows climbed across other sows, frequently urinating, appetite stopped, the mucous membrane of the labia was purple-red, and the mucus was thick and thick. In addition, according to practical experience, the tears from the corner of the eye to the corner of the mouth were dried from the corner of the mouth. The corner of the eye is 1/2, which is the time of adaptation. However, due to physiological reasons, young sows tend to ovulate 5 to 6 hours later than adult sows. Mating should be carried out 25 to 36 hours after the onset of estrus. On the contrary, older sows ovulate earlier than adult sows, so they must be delivered in advance. . In general, it is the old match early, the small match late, not a lot of match with the middle, so we must master the adaptation time according to the specific conditions of the sow. If the delivery time is too early, most of the sperm will die when the egg is discharged. If the delivery time is too late, because the egg is discharged for too long, when the sperm arrives, most of the egg loses vitality, which will lower the sow. The conception rate and litter size. 3, repeated transmission and distribution Based on years of work experience, the method of repeated transmission and distribution is an effective measure to improve the conception rate and litter size of sows. During the estrus period, the sows successively ovulate, taking 2 to 3 times of delivery, which can cause supplemental reflex excitement, so that the eggs that have been discharged can get the chance of fertilization, and create more effective sperm and eggs. Combine opportunities. The specific interval of delivery and delivery is: 6 to 8 hours after the first delivery, the second transmission and distribution, according to the specific conditions of the sow, can be carried out after 6 to 8 hours after the second delivery. Sub-transmission, this is an effective way to increase the conception rate and litter size. 4, carefully managed and managed pregnant sows In order to ensure the normal development of sows and prevent premature birth, abortion and other adverse consequences, piglets with a large number of individuals, large individuals and strong vitality must be fed with pregnant sows. In the early stages of pregnancy, sows are easily aborted due to external conditions. Therefore, do not feed on nutritional insufficiency, lack of vitamins or spoiled and irritating feed to avoid miscarriage or embryo death. In the late pregnancy, especially in the last month, the litter is developing very fast, and the concentrate in the diet should be gradually increased, and fed to the high quality green roughage to ensure that the sow gets enough nutrients to supply the baby's rapid development needs. Pigs accumulate certain nutrients in the body for postpartum lactation. In short, no matter what period of time, the nutrition of the feed must be comprehensive. Pregnant sows should be kept in a single circle to prevent intense sports and collisions, but also exercise properly, keep the pens and sports fields clean and hygienic, keep the pens warm in winter and cool in summer, and keep the sows alive. Improved. The above is the technology to improve the conception rate and litter size of sows, for your reference, and hope to help you. Huinong School has more relevant agricultural technology knowledge. Continue to pay attention to Huinong School to answer questions during planting or breeding. GMP ATS Injection, Tetanus Antitoxin, Tetanus Toxoid ,Tetanus Antitoxin Injection, Antitetanus, Refined Tetanus Antitoxinsupplier in China Tetanus Antitoxin,Tetanus Toxoid,Tetanus Antitoxin Injection,Antitetanus&Refined Tetanus Antitoxin FOSHAN PHARMA CO., LTD. , https://www.fs-pharma.com