Long-term infertility of sows is a hindrance to the reproductive function of breeding pigs and sows, leading to the phenomenon that sows cannot breed offspring. There are many reasons for the long-term infertility of sows, including reproductive organs, genital diseases and improper feeding and management.
First, breeding boar diseases
The diseases of boars during breeding period are most likely to result in infertility for several sows for a long time. The main reason is that the quality of the boar's semen is poor, and that the boar's sperm cannot meet the standard required to fertilize sows. For azoospermia, less refined, dead sperm, sperm deformity and sperm motility is not strong. There is semen with pus, blood or urine.
The reason for the poor quality of boar semen is mainly due to poor feeding and management and diseases of the reproductive organs. Feed single, genital diseases such as cryptorchidism, testicular hypoplasia, testicular atrophy, orchitis and epididymitis, epididymal duct and vas deferens, scrotal skin disease, can cause dead sperm, less refined or azoospermia. In varicocele, although sexual desire is strong, it does not ejaculate. When there are inflammations in the accessory glands (prostate, seminal vesicles, urethral glands), sperms often die, or semen carries blood and floc. Bladder neck paralysis can cause urine in the semen. Severe hyperthermia disease can also be caused by the destruction of the seminiferous tubule epithelium and cannot normally produce sperm. Abnormal sperm and azoospermia may also be related to heredity. The poor quality of boar semen can cause many sows to become infertile at the same time and it is not difficult to find out. For boars with poor semen quality, a detailed inspection should be conducted according to the requirements of artificial insemination on the quality of semen.
Prevention: First of all, we should investigate and analyze medical history, find out the cause of the disease, and take appropriate preventive measures. In case of poor feeding and management, feed management should be improved in a timely manner, such as increasing the amount of feed ingredients, improving feed quality, increasing sports, and suspending breeding. If secondary diseases are secondary to the disease, the primary disease should be treated. After eliminating the primary disease, the quality of the semen can often be improved. In addition to taking appropriate measures for the cause of the disease, testosterone, gestational horse serum or gonadotropin may be used for treatment according to the condition. If the disease persists or is caused by a congenital disease (hereditary factor), the boar must be eliminated in time.
Second, the sow breeding disease
Diseases during sow reproduction can easily cause reproductive dysfunction, resulting in temporary or permanent inability to reproduce. There are many causes of infertility in sows for a long time, mainly including genital diseases, incomplete development of reproductive organs and improper feeding and management. Reproductive organ diseases (uterine inflammation, vaginitis, follicular cysts, etc.), abnormal development of reproductive organs, genital reproductive disease (ie reproductive organs incomplete, no reproductive capacity), genital malformations, uterine horn malformations, cervical malformation, vulva, vagina Malformation, anal fistula, heterosexual infertility, hermaphroditism, endocrine disorders, inbreeding, lack of vitamins and minerals, improper feeding and management, malnutrition, excessive weight loss or excessive fat and other factors.
1. Genital insufficiency. Mainly due to lack of anterior pituitary hormone secretion, or thyroid and other endocrine disorders. Prevention: Strengthen feeding management, and make it with the boar to exercise or feed, supplemented by hormone therapy, promote the development of their reproductive organs. Generally can be used estrogen (estradiol, seeking even diol, etc.), follicle-stimulating hormone and pregnant horse serum, after several medications, may occur in estrus, ovulation, should be timely breeding.
2. Genital diseases. Common diseases in the ovaries and uterus cause abnormal estrus, or early death of sperms, eggs, or embryos. Due to the different nature of genital diseases, the symptoms presented are also different. When the ovarian function declines, the estrus is not regular, the estrus is weak or prolonged, or the estrus does not ovulate, the ovarian cysts, due to the excessive secretion of follicle stimulating, the sows eroticism, often crawling across other sows, but often with infertility. Prevention: due to the long-term infertility caused by reproductive organs, we must first identify and eliminate the cause of the occurrence as much as possible, according to the reproductive organs diseases, give reasonable treatment. When suffering from oophoritis, it can be treated with drugs such as ParkMed (main ingredient: long-acting florfenicol, etc.) or Baishun (main component: lomefloxacin, etc.): intramuscular injection of progesterone or villi when suffering from ovarian cysts Gonadotropin treatment; treatment of persistent luteum can be applied to placental tissue fluid, pregnant horse serum and artificial estrogen and other drugs. In addition to giving medical treatment, we must improve feeding management, increase the amount of concentrate feed properly, and feed enough minerals and vitamins, give proper exercise, and enhance the sow's constitution in order to receive satisfactory results.
3. Inappropriate feeding and management, such long-term infertility with the most common. Mainly due to insufficient feed or nutrient in the feed, especially in the absence of protein, the sows are thin and weak, so that the sow reproductive function disorders. The lack of vitamins and inorganic salts in feeds, too much concentrate and lack of exercise, resulting in sow obesity, resulting in ovarian fat infiltration, follicular epithelial fatty degeneration, follicle atrophy, poor feed quality, improper management can also cause the disease. Sows show abnormal estrus, such as irregular estrus, prolonged estrus, or persistent estrus. Although some sows have estrus, but do not ovulate, repeatedly with infertility. Some, even if estrus and pregnancy, can cause fewer births. Some are not estrus. In order to determine the specific causes of such infertility, it is necessary to analyze the relationship between infertility and feeding management based on the estrus estrus and breeding conditions, pig nutritional status, feed types, and feeding management systems, and finally make a diagnosis. Prevention: Feeds for sows should not only be given enough, but they should be diversified to avoid feeding a single feed. The feed should contain the protein, minerals and vitamins necessary for the sow. Therefore, green feed or quality silage should be fed. For follicular estrus pauses or matured but not ovulated, good results can be obtained if large malts are fed. As long as sows are over-fertilized, long-term infertility can reduce the amount of concentrate feed, increase the amount of green feed and juicy feed, and increase sow movement. At the same time can also be used to give appropriate treatment with aphrodisiac drugs, promote sows estrus and ovulation.
4. Infertility caused by other reasons, such as hermaphroditism, heterosexual birth, etc., should be cast off as soon as possible after discovery.
After the onset of sows should pay close attention to the time of treatment, treatment for a period of time without efficacy should also be eliminated, especially the sexual deformity, heterosexual twins should be eliminated early so that even if the treatment of pigs have no effect.
First, breeding boar diseases
The diseases of boars during breeding period are most likely to result in infertility for several sows for a long time. The main reason is that the quality of the boar's semen is poor, and that the boar's sperm cannot meet the standard required to fertilize sows. For azoospermia, less refined, dead sperm, sperm deformity and sperm motility is not strong. There is semen with pus, blood or urine.
The reason for the poor quality of boar semen is mainly due to poor feeding and management and diseases of the reproductive organs. Feed single, genital diseases such as cryptorchidism, testicular hypoplasia, testicular atrophy, orchitis and epididymitis, epididymal duct and vas deferens, scrotal skin disease, can cause dead sperm, less refined or azoospermia. In varicocele, although sexual desire is strong, it does not ejaculate. When there are inflammations in the accessory glands (prostate, seminal vesicles, urethral glands), sperms often die, or semen carries blood and floc. Bladder neck paralysis can cause urine in the semen. Severe hyperthermia disease can also be caused by the destruction of the seminiferous tubule epithelium and cannot normally produce sperm. Abnormal sperm and azoospermia may also be related to heredity. The poor quality of boar semen can cause many sows to become infertile at the same time and it is not difficult to find out. For boars with poor semen quality, a detailed inspection should be conducted according to the requirements of artificial insemination on the quality of semen.
Prevention: First of all, we should investigate and analyze medical history, find out the cause of the disease, and take appropriate preventive measures. In case of poor feeding and management, feed management should be improved in a timely manner, such as increasing the amount of feed ingredients, improving feed quality, increasing sports, and suspending breeding. If secondary diseases are secondary to the disease, the primary disease should be treated. After eliminating the primary disease, the quality of the semen can often be improved. In addition to taking appropriate measures for the cause of the disease, testosterone, gestational horse serum or gonadotropin may be used for treatment according to the condition. If the disease persists or is caused by a congenital disease (hereditary factor), the boar must be eliminated in time.
Second, the sow breeding disease
Diseases during sow reproduction can easily cause reproductive dysfunction, resulting in temporary or permanent inability to reproduce. There are many causes of infertility in sows for a long time, mainly including genital diseases, incomplete development of reproductive organs and improper feeding and management. Reproductive organ diseases (uterine inflammation, vaginitis, follicular cysts, etc.), abnormal development of reproductive organs, genital reproductive disease (ie reproductive organs incomplete, no reproductive capacity), genital malformations, uterine horn malformations, cervical malformation, vulva, vagina Malformation, anal fistula, heterosexual infertility, hermaphroditism, endocrine disorders, inbreeding, lack of vitamins and minerals, improper feeding and management, malnutrition, excessive weight loss or excessive fat and other factors.
1. Genital insufficiency. Mainly due to lack of anterior pituitary hormone secretion, or thyroid and other endocrine disorders. Prevention: Strengthen feeding management, and make it with the boar to exercise or feed, supplemented by hormone therapy, promote the development of their reproductive organs. Generally can be used estrogen (estradiol, seeking even diol, etc.), follicle-stimulating hormone and pregnant horse serum, after several medications, may occur in estrus, ovulation, should be timely breeding.
2. Genital diseases. Common diseases in the ovaries and uterus cause abnormal estrus, or early death of sperms, eggs, or embryos. Due to the different nature of genital diseases, the symptoms presented are also different. When the ovarian function declines, the estrus is not regular, the estrus is weak or prolonged, or the estrus does not ovulate, the ovarian cysts, due to the excessive secretion of follicle stimulating, the sows eroticism, often crawling across other sows, but often with infertility. Prevention: due to the long-term infertility caused by reproductive organs, we must first identify and eliminate the cause of the occurrence as much as possible, according to the reproductive organs diseases, give reasonable treatment. When suffering from oophoritis, it can be treated with drugs such as ParkMed (main ingredient: long-acting florfenicol, etc.) or Baishun (main component: lomefloxacin, etc.): intramuscular injection of progesterone or villi when suffering from ovarian cysts Gonadotropin treatment; treatment of persistent luteum can be applied to placental tissue fluid, pregnant horse serum and artificial estrogen and other drugs. In addition to giving medical treatment, we must improve feeding management, increase the amount of concentrate feed properly, and feed enough minerals and vitamins, give proper exercise, and enhance the sow's constitution in order to receive satisfactory results.
3. Inappropriate feeding and management, such long-term infertility with the most common. Mainly due to insufficient feed or nutrient in the feed, especially in the absence of protein, the sows are thin and weak, so that the sow reproductive function disorders. The lack of vitamins and inorganic salts in feeds, too much concentrate and lack of exercise, resulting in sow obesity, resulting in ovarian fat infiltration, follicular epithelial fatty degeneration, follicle atrophy, poor feed quality, improper management can also cause the disease. Sows show abnormal estrus, such as irregular estrus, prolonged estrus, or persistent estrus. Although some sows have estrus, but do not ovulate, repeatedly with infertility. Some, even if estrus and pregnancy, can cause fewer births. Some are not estrus. In order to determine the specific causes of such infertility, it is necessary to analyze the relationship between infertility and feeding management based on the estrus estrus and breeding conditions, pig nutritional status, feed types, and feeding management systems, and finally make a diagnosis. Prevention: Feeds for sows should not only be given enough, but they should be diversified to avoid feeding a single feed. The feed should contain the protein, minerals and vitamins necessary for the sow. Therefore, green feed or quality silage should be fed. For follicular estrus pauses or matured but not ovulated, good results can be obtained if large malts are fed. As long as sows are over-fertilized, long-term infertility can reduce the amount of concentrate feed, increase the amount of green feed and juicy feed, and increase sow movement. At the same time can also be used to give appropriate treatment with aphrodisiac drugs, promote sows estrus and ovulation.
4. Infertility caused by other reasons, such as hermaphroditism, heterosexual birth, etc., should be cast off as soon as possible after discovery.
After the onset of sows should pay close attention to the time of treatment, treatment for a period of time without efficacy should also be eliminated, especially the sexual deformity, heterosexual twins should be eliminated early so that even if the treatment of pigs have no effect.
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