The sows can be naturally estrus and breed 3 to 7 days after weaning. However, because of various reasons, some sows often do not have estrus or estrus after weaning, which seriously affects the pigs. The economic benefits.
1 Common causes of sows not estrus after weaning
1.1 Nutrition Level: Especially vitamins and energy deficiency in feed. In particular, the sows on some farms use low levels of vitamins A, E, B1, folic acid and biotin, which often cause the sows to become estrus after weaning. The postnatal nutritional complications of the newly born sows are more prominent in the lean species. According to statistics, more than 50% of newly-born sows do not have estrus in one week after weaning, but only 20% of sows. Excessive body weight loss during sow-feeding sows will result in delayed or irritated sows, especially in primiparous sows. One week after giving birth, lactating sows should eat freely. Severely strayed during lactation and did not pay attention to aphrodisiac feeding after weaning. One week after giving birth, lactating sows should eat freely.
1.2 Early mating of sows will often lead to abnormal estrus in the second child.
1.3 Insufficient Boar Stimulation: Sows are too far away from boars, and weaned sows do not receive proper sexual stimulation. Lack of seduction results in non-estrus.
1.4 Insufficient temperature and light and lack of exercise; In the hot summer months, when the ambient temperature reaches above 30 degrees Celsius, the ovaries and estrus activity of sows are suppressed.
1.5 Molding of feed ingredients: The most important influence on normal estrus of sows is zeotoxin, especially zearalenone, which has a molecular structure similar to estrogen. After sows consume feed containing this toxin, their normal endocrine function will be disrupted, leading to abnormal estrus or inhibition of ovulation.
1.6 Ovarian dysplasia: Long-term suffering from chronic respiratory diseases, chronic digestive system diseases or parasitic diseases of the gilt, the ovarian hypoplasia, follicular dysplasia so that hormone secretion, affecting the heat.
1.7 Sows have reproductive disorders: swine fever, blue ear disease, pseudorabies, parvovirus disease, Japanese encephalitis virus disease and Eperythrozoon and other etiological factors will cause sow flu and other reproductive disorders. In addition, sows with mastitis, endometritis, and adipocytosis had higher rates of estrus after weaning.
2 Prevention of estrus in sows after weaning
2.1 The use of modern physiological regulators to prevent, can achieve good results, such as Teng Jun "general milk music keys", from the beginning of 7 to 15 days before birth to 10 to 15 days after delivery, added per ton of feed to 3 ~ 4 kg, evenly mixed after use; pighouse temperature below 25 degrees, can be reduced to 2 to 3 kg per ton of feed, the prevention of postpartum lactation deficiency syndrome has a better effect.
2.2 The sow feed should be added mycotoxin treatment agent, the general mycotoxin adsorbent can only adsorb aflatoxin, it is best to use some new types of mycotoxin treatment agent, such as "enhanced mould mildew", etc. It has a wide range of toxins such as aflatoxins, vomitoxins, zearalenone, and T-2 toxins, and it also has functions such as enhancing immunity, protecting the liver and strengthening the kidneys.
2.3 In the summer, the sunstroke prevention and cooling of sows should be well done. Combine ventilation and other cooling measures to increase ventilation and convection in piggery to promote evaporation and heat dissipation. Traditional pig farms should keep all doors and windows open for air. convection. Conditioned pig farms should be equipped with a water curtain type cooling system, generally reducing temperature can be 3 ~ 5 °C. Construct a pergola on an open-air playground for growing and bred pigs' houses and lay a shade net. When the temperature is high, wash the pig body with cold water or install a spray device. Spray 4 to 6 times a day. The nursing sows in the farrowing house must use drip. The way to cool down drops on the lower neck near the shoulder.
3 Measures to prevent sows from estrus after weaning
3.1 The key to reducing the loss of sows during lactation is to control the nutrient level and feed intake of the nursing material.
3.2 Appropriate cuts should be made 3 days before weaning. Weaning should be performed before weaning until shortly before the breeding. The amount of feed should be 3kg per day.
3.3 Sows that are not estrus after 10 days after weaning can be given intramuscular injection of 3-4 ml of triad hormone, or intramuscular injection of 1 to 250 to 1000 units of sex hormones, 500 units of chorionic gonadotropin, and then Chase with the boar on the same sports field, usually 2 to 4 days can be heat. It is possible that estrus and breeding do not have fetuses, and natural estrus can occur in 21 days.
3.4 Supplement vitamin E, A, C, trace element selenium or feed green feed;
3.5 Fatty, overweight sows adjust body lice;
3.6 Sows with reproductive disorders should be promptly treated or eliminated.
1 Common causes of sows not estrus after weaning
1.1 Nutrition Level: Especially vitamins and energy deficiency in feed. In particular, the sows on some farms use low levels of vitamins A, E, B1, folic acid and biotin, which often cause the sows to become estrus after weaning. The postnatal nutritional complications of the newly born sows are more prominent in the lean species. According to statistics, more than 50% of newly-born sows do not have estrus in one week after weaning, but only 20% of sows. Excessive body weight loss during sow-feeding sows will result in delayed or irritated sows, especially in primiparous sows. One week after giving birth, lactating sows should eat freely. Severely strayed during lactation and did not pay attention to aphrodisiac feeding after weaning. One week after giving birth, lactating sows should eat freely.
1.2 Early mating of sows will often lead to abnormal estrus in the second child.
1.3 Insufficient Boar Stimulation: Sows are too far away from boars, and weaned sows do not receive proper sexual stimulation. Lack of seduction results in non-estrus.
1.4 Insufficient temperature and light and lack of exercise; In the hot summer months, when the ambient temperature reaches above 30 degrees Celsius, the ovaries and estrus activity of sows are suppressed.
1.5 Molding of feed ingredients: The most important influence on normal estrus of sows is zeotoxin, especially zearalenone, which has a molecular structure similar to estrogen. After sows consume feed containing this toxin, their normal endocrine function will be disrupted, leading to abnormal estrus or inhibition of ovulation.
1.6 Ovarian dysplasia: Long-term suffering from chronic respiratory diseases, chronic digestive system diseases or parasitic diseases of the gilt, the ovarian hypoplasia, follicular dysplasia so that hormone secretion, affecting the heat.
1.7 Sows have reproductive disorders: swine fever, blue ear disease, pseudorabies, parvovirus disease, Japanese encephalitis virus disease and Eperythrozoon and other etiological factors will cause sow flu and other reproductive disorders. In addition, sows with mastitis, endometritis, and adipocytosis had higher rates of estrus after weaning.
2 Prevention of estrus in sows after weaning
2.1 The use of modern physiological regulators to prevent, can achieve good results, such as Teng Jun "general milk music keys", from the beginning of 7 to 15 days before birth to 10 to 15 days after delivery, added per ton of feed to 3 ~ 4 kg, evenly mixed after use; pighouse temperature below 25 degrees, can be reduced to 2 to 3 kg per ton of feed, the prevention of postpartum lactation deficiency syndrome has a better effect.
2.2 The sow feed should be added mycotoxin treatment agent, the general mycotoxin adsorbent can only adsorb aflatoxin, it is best to use some new types of mycotoxin treatment agent, such as "enhanced mould mildew", etc. It has a wide range of toxins such as aflatoxins, vomitoxins, zearalenone, and T-2 toxins, and it also has functions such as enhancing immunity, protecting the liver and strengthening the kidneys.
2.3 In the summer, the sunstroke prevention and cooling of sows should be well done. Combine ventilation and other cooling measures to increase ventilation and convection in piggery to promote evaporation and heat dissipation. Traditional pig farms should keep all doors and windows open for air. convection. Conditioned pig farms should be equipped with a water curtain type cooling system, generally reducing temperature can be 3 ~ 5 °C. Construct a pergola on an open-air playground for growing and bred pigs' houses and lay a shade net. When the temperature is high, wash the pig body with cold water or install a spray device. Spray 4 to 6 times a day. The nursing sows in the farrowing house must use drip. The way to cool down drops on the lower neck near the shoulder.
3 Measures to prevent sows from estrus after weaning
3.1 The key to reducing the loss of sows during lactation is to control the nutrient level and feed intake of the nursing material.
3.2 Appropriate cuts should be made 3 days before weaning. Weaning should be performed before weaning until shortly before the breeding. The amount of feed should be 3kg per day.
3.3 Sows that are not estrus after 10 days after weaning can be given intramuscular injection of 3-4 ml of triad hormone, or intramuscular injection of 1 to 250 to 1000 units of sex hormones, 500 units of chorionic gonadotropin, and then Chase with the boar on the same sports field, usually 2 to 4 days can be heat. It is possible that estrus and breeding do not have fetuses, and natural estrus can occur in 21 days.
3.4 Supplement vitamin E, A, C, trace element selenium or feed green feed;
3.5 Fatty, overweight sows adjust body lice;
3.6 Sows with reproductive disorders should be promptly treated or eliminated.
Chongqing "Terson card" Coptis, Department of Chongqing Shizhu Tujia Autonomous County specialty, China National Geographical Indications products (native geographical products). Because produced in Shizhu County, Yellow River National Forest Park, also known as "yellow Coptis." Coptis Coptis Coptis Coptis Coptis Chinensis Franch dried rhizomes, medicinal products for the "taste even", commonly used expensive Chinese medicine, Shizhu County Coptis original area, China's Coptis town, due to the high quality, was identified As "Sinopharm" "Authentic Coptis". Coptis has the characteristics of branch fertilizer, flesh thickness, length, color and high content of active ingredients. Its content of berberine (also known as berberine) is 5.20-7.69% (Chinese Pharmacopoeia 2015 edition shall not be less than 3.6% ); Coptis alkaloids (Coptis, Worenine, Palmatine, Jatrorrhizine, etc.) content below 0.5%. In addition, it contains Magnoforine and a Lumicaruleic acid, Ferulic acid.
Coptis
Heat Dampness Coptis,Selected Coptis,High-Altitude Shizhu Coptis,Wild Stone Column Coptis
Chongqing Taisun Pharmaceutical Co., Ltd. , https://www.taisuncoptis.com