Breeding pigs are the core of the sustainable development of the pig industry. Different rearing systems, management measures and utilization methods will affect the breeding efficiency of breeding pigs. Only scientific management of the breeding pigs will enable the boar to have a strong breeding ability, so that the sows will be fully stocked and have a large number of litters. The piglets have good physique and lay a solid foundation for the healthy development of the pig industry.
There are some misunderstandings in breeding and management and utilization of breeding pigs in scattered farming or small-scale farming. These misconceptions have a lot to do with the lack of scientific knowledge and imperfect feeding conditions. Of course, they are also caused by changes in market conditions. Short-term behavior has a certain connection.
1 Misunderstanding on breeding
In the rearing of breeding pigs, there are two diametrically opposed misunderstandings and misunderstandings.
Too rough a misunderstanding: Breeding pigs as fat pigs, feeding the feed used for finishing pigs, and using free-feeding feeding methods. As a result of this feeding, boars are often stunted due to poor feed quality, resulting in thin semen and high malformation rates. The fertility rate of sows after mating is very poor, and some boars have high levels of crude fiber in their diets. Excessively large breeds lead to serious drooping of the belly of the boar, and this time is very difficult and over-consuming. It affects the breeding effect in different degrees and shortens the useful life. The sows are poorly fed due to extensive feeding, and their estrus performance is not obvious. The number of ovulation is not high, the number of litters after conception is less, the piglets are stunted, and the weak and the young are more likely to develop multiple diseases.
The overly meticulous misunderstanding is that the breeding pigs are bred as piglets, irrespective of the actual needs and specific usage of the breeding pigs, blindly increasing the nutrient content, and excessively feeding a variety of fine feeds. As a result of this feeding, the boar is too obese, and the body's internal organ deposits too much fat, resulting in decreased libido, greatly reduced ability to climb, and severely affecting the rate of use. Excessive obesity can also affect the quality of semen, resulting in abnormal spermatozoa and death. The proportion of spermatozoa increases, the sow fertilization rate after mating is not high, empty sows have excessive moisture, normal ovulation is affected, resulting in poor estrus performance, it is not easy to grasp the right timing of breeding, after the breeding is not easy to be fetus, even if the conception The number of litters will not be very high. If the pregnant sow has a good sensation, the body fat will oppress the fetus, which can lead to fetal death and cause miscarriage. The over-slaughter sows can easily produce thin, thin piglets, affecting the breeding rate of piglets. The phenomenon of infertility often occurs after sows do not have estrus or estrus.
2 Misunderstandings in management
Some farmers do not pay attention to the health of the pigsty, poor sanitation in the pig house, serious accumulation of malodorous gas, random distribution of blue roughage in the pigsty, long cleaning of the feed trough, summer flies, and frequent freezing in the winter; The pig's personality is fierce, often turning over the bottom of the arch, or arching the door. Breeders often impatiently catch up with the hung pigs. The free-range households barely brush the skin and fix the limbs of pigs; due to improper use, the pen The construction is irrational. Some boars develop bad habits of masturbation and affect the quality of seed production to varying degrees. Many people do not know the taboos when mating, and their management is very rough, making the useful life of some fine boars not ideal. . In the case of free-range breeding, the sow house is often under-spaced, and the disinfection of the sow house is not timely. Therefore, the house is dark and damp, because it is not cultivated in time, and some sows eat and drink Lazard. Environmental health is difficult to control. The management of sows is affected too much by the market conditions. When the prices are good, the sows are kept as babes. Once the market declines, the sow's feeding level plummets. Even at the best age for use, it may be slaughtered.
3 Misunderstandings in use
Because the cost of purchasing and breeding fine boars is relatively large, retailers often purchase boars of impure pedigrees for seed use, resulting in decreased productivity of offspring. In order to improve the benefits, they often ignore the breeding ability of boars and use them too often for too long.
The breeding is done three times a day and four times a day without resting for several consecutive days. Sometimes the body condition and environmental restrictions of the boar are ignored. Even if the boar has just finished eating or has just finished exercise, it is also mated. The direct consequence of overuse is that boars are over-strengthened and their breeding effects are worsening, the conception rate is reduced, the number of litters is reduced, boars have a sharp decline in sexual desire, and their physical fitness is getting worse, and they have not reached ideal use. Years can only be eliminated with pain. Sometimes, in order to benefit early, in the case of insufficient age and body weight, the breeding of male boars is used in advance. This will not only result in very low fecundity, but also very few litter size. It will also cause boar premature aging and shorten the boar greatly. Useful years. There are similar mistakes in the use of sows. If you see gilts in estrus, whether or not you have reached the appropriate mating age, whether you have a suitable breeding corpse, you will be able to mate in time. Although gilts can also be pregnant and conceived, the number of litters is often very small, and most of the piglets they produce are incompletely developed, which results in serious waste of resources. It is even more critical that premature utilization of gilts also greatly reduces the use of breeding sows. Years, the result is not worth the candle. It is not reasonable to plan for breeding. It is believed that piglets have poor digestive capacity, high nutritional value of breast milk, more weight gain on breastfeeding, and are accustomed to weaning around 60 days of age, which greatly restricts the reproductive potential of sows.
Related articles Scientific breeding and rational utilization of boars on the breeding of boars in large-scale pig farms Management and breeding of boars Regulations on the rearing and management of boars and feed allocation Problems of feeding and management of modern lean boars It is important to pay attention to the rational use of boars on large-scale pig farms.
There are some misunderstandings in breeding and management and utilization of breeding pigs in scattered farming or small-scale farming. These misconceptions have a lot to do with the lack of scientific knowledge and imperfect feeding conditions. Of course, they are also caused by changes in market conditions. Short-term behavior has a certain connection.
1 Misunderstanding on breeding
In the rearing of breeding pigs, there are two diametrically opposed misunderstandings and misunderstandings.
Too rough a misunderstanding: Breeding pigs as fat pigs, feeding the feed used for finishing pigs, and using free-feeding feeding methods. As a result of this feeding, boars are often stunted due to poor feed quality, resulting in thin semen and high malformation rates. The fertility rate of sows after mating is very poor, and some boars have high levels of crude fiber in their diets. Excessively large breeds lead to serious drooping of the belly of the boar, and this time is very difficult and over-consuming. It affects the breeding effect in different degrees and shortens the useful life. The sows are poorly fed due to extensive feeding, and their estrus performance is not obvious. The number of ovulation is not high, the number of litters after conception is less, the piglets are stunted, and the weak and the young are more likely to develop multiple diseases.
The overly meticulous misunderstanding is that the breeding pigs are bred as piglets, irrespective of the actual needs and specific usage of the breeding pigs, blindly increasing the nutrient content, and excessively feeding a variety of fine feeds. As a result of this feeding, the boar is too obese, and the body's internal organ deposits too much fat, resulting in decreased libido, greatly reduced ability to climb, and severely affecting the rate of use. Excessive obesity can also affect the quality of semen, resulting in abnormal spermatozoa and death. The proportion of spermatozoa increases, the sow fertilization rate after mating is not high, empty sows have excessive moisture, normal ovulation is affected, resulting in poor estrus performance, it is not easy to grasp the right timing of breeding, after the breeding is not easy to be fetus, even if the conception The number of litters will not be very high. If the pregnant sow has a good sensation, the body fat will oppress the fetus, which can lead to fetal death and cause miscarriage. The over-slaughter sows can easily produce thin, thin piglets, affecting the breeding rate of piglets. The phenomenon of infertility often occurs after sows do not have estrus or estrus.
2 Misunderstandings in management
Some farmers do not pay attention to the health of the pigsty, poor sanitation in the pig house, serious accumulation of malodorous gas, random distribution of blue roughage in the pigsty, long cleaning of the feed trough, summer flies, and frequent freezing in the winter; The pig's personality is fierce, often turning over the bottom of the arch, or arching the door. Breeders often impatiently catch up with the hung pigs. The free-range households barely brush the skin and fix the limbs of pigs; due to improper use, the pen The construction is irrational. Some boars develop bad habits of masturbation and affect the quality of seed production to varying degrees. Many people do not know the taboos when mating, and their management is very rough, making the useful life of some fine boars not ideal. . In the case of free-range breeding, the sow house is often under-spaced, and the disinfection of the sow house is not timely. Therefore, the house is dark and damp, because it is not cultivated in time, and some sows eat and drink Lazard. Environmental health is difficult to control. The management of sows is affected too much by the market conditions. When the prices are good, the sows are kept as babes. Once the market declines, the sow's feeding level plummets. Even at the best age for use, it may be slaughtered.
3 Misunderstandings in use
Because the cost of purchasing and breeding fine boars is relatively large, retailers often purchase boars of impure pedigrees for seed use, resulting in decreased productivity of offspring. In order to improve the benefits, they often ignore the breeding ability of boars and use them too often for too long.
The breeding is done three times a day and four times a day without resting for several consecutive days. Sometimes the body condition and environmental restrictions of the boar are ignored. Even if the boar has just finished eating or has just finished exercise, it is also mated. The direct consequence of overuse is that boars are over-strengthened and their breeding effects are worsening, the conception rate is reduced, the number of litters is reduced, boars have a sharp decline in sexual desire, and their physical fitness is getting worse, and they have not reached ideal use. Years can only be eliminated with pain. Sometimes, in order to benefit early, in the case of insufficient age and body weight, the breeding of male boars is used in advance. This will not only result in very low fecundity, but also very few litter size. It will also cause boar premature aging and shorten the boar greatly. Useful years. There are similar mistakes in the use of sows. If you see gilts in estrus, whether or not you have reached the appropriate mating age, whether you have a suitable breeding corpse, you will be able to mate in time. Although gilts can also be pregnant and conceived, the number of litters is often very small, and most of the piglets they produce are incompletely developed, which results in serious waste of resources. It is even more critical that premature utilization of gilts also greatly reduces the use of breeding sows. Years, the result is not worth the candle. It is not reasonable to plan for breeding. It is believed that piglets have poor digestive capacity, high nutritional value of breast milk, more weight gain on breastfeeding, and are accustomed to weaning around 60 days of age, which greatly restricts the reproductive potential of sows.
Related articles Scientific breeding and rational utilization of boars on the breeding of boars in large-scale pig farms Management and breeding of boars Regulations on the rearing and management of boars and feed allocation Problems of feeding and management of modern lean boars It is important to pay attention to the rational use of boars on large-scale pig farms.
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