Core Tip: This article focuses on the causes of sows not estrus and their solutions.
1, congenital factors: mainly physiological defects and genetic defects, such as the development of reproductive organs is not perfect, two pigs, abnormal secretion of hormones. In addition, the presence of seasonal breeding infertility genes may also cause seasonal sows to not be estrus.
2, caused by infectious diseases: swine eperythrozoonosis, porcine reproductive and respiratory syndrome, pseudorabies, swine Brucella, Japanese encephalitis, small, chlamydia and other diseases, can lead to pig reproductive development, As a result, pigs are not estrus or estrus is not obvious, causing reproductive problems.
3, caused by poor feeding and management: sows do not have a large proportion of estrus, mainly in the following aspects: 1 Nutrition: due to malnutrition, resulting in sows are too thin and not estrus; feeding a single species of feed, Causes sows to be malnourished, resulting in no estrus. The lack of vitamins and trace elements in gilt diets or the presence of mycotoxins in feeds (using galloping An+Sumet mixes) can cause sows not to be estrus. Nutrition is too high, so that the sows raise too much fat, ovarian fat infiltration, degeneration follicular epithelial fat cells, resulting in atrophy of ovarian follicles or ovarian cysts, but also can lead to sows are not estrus. 2 When the sow was weaned too late, the sow lost more than 15 kg of body weight, resulting in a poor physical condition that caused the estrus to be delayed or not estrus after weaning.
4, sow obstetric disease (such as suffering from endometritis) can also cause estrus.
Solution
First of all, check the reason why the sow is not estrus. Take different solutions and measures according to different reasons.
1, gilts due to congenital causes of heat, should be eliminated as soon as possible
2. Due to the disease, different solutions are taken according to the degree of its infectious disease. Severe estrus can not be restored and it is eliminated earlier. The lighter diseases can do a good job in the treatment and prevention of various diseases and restore the health of sows.
3, due to feeding and management, should improve the level of feeding and management, specific to the following aspects: 1 feeding compound feed, so that the sow to maintain a medium phlegm, gilts in 50 kg weight using gilt so that in order to make Its reproductive organs are fully developed and aphrodisiac feeds are conducted two weeks before breeding. 2 When the gilts reach 6-7 months of age, the boars are rushed to the sows every month for stimulation. This is beneficial for estrus estrus, but should be controlled within 15-20 minutes at a time. 3 Improve the breeding environment of sows. The building of pigs should be reasonable, with good ventilation, reasonable lighting, suitable temperature and good sanitation. 4 The persistent non-estrus sow regularly rushes to different pigs, and a constantly updated environment can promote estrus. 5 Sow strengthen postpartum treatment of obstetric diseases, so that sows as soon as possible to restore health.
4, sows are not estrus aphrodisiac: 1 vinegar 30ml, hawthorn (study fine) 50g, open water, mixed feeding. 1 time/day for 3 days. 2 Promote the early estrus of pigs and pour about 30 grams of brown sugar into the pot to heat it, stirring constantly, and then add a scoop of clear water to boil it for 3 minutes. Pour it into the feed and mix well. Three times a day, 4~ After 5 days, the estrus of the sow can be stimulated and the fertility can be bred in time. 3 The tickling massage method can be used for aphrodisiac sows, the specific method is: using four fingers in the sow's abdomen to gently deflect the number, wait until the sow emotionally stable and lie down, gently pull its limbs, so that it straight; Slightly press the sow's neck with your left hand. The middle finger of the right hand and the index finger lightly clip the base of the nipple. Hold the nipple in the thumb and rub it 20 times in a clockwise direction. Rub it counterclockwise for 20 laps, until the sow's breasts are rubbed all over again. Gently raise the sow's forelegs with your left hand, press your right thumb in a clockwise or counterclockwise direction to rub each side of the underarm 30 times, then press and knead the back leg for 30 cycles each; hold the mother with your left hand. The pig's body, right-handed clockwise and counterclockwise rubbing sow hips close to each side of the 20-lap, hard first light weight. Let the pig stand up and hold the pigs in both arms. The palms of both hands are rubbed along the outside of the two rows of breasts and pushed back and forth 15 times. At the end of the entire process, tap the sow buttocks in the right hand palm and allow it to walk within the circle for a few dozen steps before allowing it to rest. Massage once a day, morning and evening, even for 5 days, sows can generally be in early estrus.
5, the use of drugs aphrodisiac: For the sows after the above method is still not in heat, you can take drugs to induce estrus. Induced estrous hormones are usually: PG600 intramuscular injection, hi pregnancy, promote row III, Lutulin, cloprostenol, etc., according to instructions.
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