Methods to prevent the degeneration of rabbit breeds
Causes of degradation
Extensive management, inbreeding only emphasizes the characteristics of grazing rabbits, not with concentrate, resulting in insufficient nutrition and variety degradation. Ignoring the blood relationship of breeding rabbits and inbreeding, resulting in poor disease resistance, slow growth, smaller size, deformity and breed degradation.
Lack of strict breeding measures, do not pay attention to the selection of breeding rabbits in accordance with the requirements of breed characteristics, often choose a big, fast-growing, fat good to sell, leaving the small, thin, weak to continue to raise, resulting in the gradual degradation of the breed.
Early breeding, overdense breeding rabbits are allowed to breed just after sexual maturity, and do not pay attention to the age difference between male and female rabbits, resulting in old, small and small breeding, so that the breed characteristics can not be stably inherited. There are some families eager for quick success and quick profit, frequent blood mating, and do not pay attention to supplement nutrition to female rabbits, making them weak and sickly, resulting in poor growth and poor disease resistance, resulting in breed degradation.
Prevention method
No matter what kind of economic type and breed of rabbits are raised, the core breeds of rabbits that accord with the characteristics of the breed and can reach the production index of the breed should be cultivated and retained in a planned way. The method of selection and retention: after the birth of the child rabbit, the child rabbit to be left first was marked with iodine or color, and its growth and development were often observed, including the primary selection of young rabbit, the selection of young rabbit and the selection of adult rabbit. For the key cultivation in line with the characteristics of varieties and outstanding growth and development, careful management should be carried out from all aspects. When putting into production, pay attention to using the best male rabbits to mate with the best female rabbits.
In the process of breeding, we should constantly purify and rejuvenate the breeds, pay attention to using excellent male rabbits to improve the general or small female rabbits, and then select excellent male and female individuals from their offspring. Must not use ordinary male rabbits or individual small male rabbits to mate with excellent females. At the same time, attention should be paid to the performance breeding of offspring.
Strictly control the first mating age and weight of breeding rabbits, do not mate if you do not reach the first mating age and weight. The offspring of adult male rabbits have relatively stable genetic performance.
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Eastern Scorpion
East scorpion body is longer, dark black, like slightly acidic soil, like to eat insects, litter more, maternal poor, mainly produced in Shandong, Hebei border area.
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Several measures to improve the benefit of raising Fox
To reduce the feeding cost, first, it is necessary to establish reasonable feeding standards and prepare diets according to the standards. you can't improve the diet at will. In the breeding period of foxes, meat, eggs and milk feed should be used reasonably, while in non-breeding periods, cheap sea fish and meat by-products should be used properly, but the nutritional needs of foxes should not be ignored, such as feeding inferior feed for a long time in foxes. It will reduce the quality of fur, or cause delay in skin extraction, but cause greater economic losses; second, feed in the procurement, transportation, storage, processing, quantity and quality and so on.
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