Inbreeding of sheep can easily lead to the disadvantages of “two drops and one highâ€, that is, the production performance of sheep is degraded, the variety is degraded, growth and development are delayed, the production of flesh is reduced by about 50%, the reproduction rate is decreased, and the inbreeding causes freak and miscarriage. Chemical and stillbirths continue to emerge; sheep have poor disease resistance and high mortality. There are three main preventive measures:
Reciprocating rams: The rams in a flock are used for two consecutive years and then exchanged with the rams of the same breed in other flock. Reduce the number of inbreeding mates.
The rams are reared separately: to the mating season, depending on the kinship, rams with distant ancestry are selected to perform manual assisted breeding or artificial insemination. Using this method can not only avoid inbreeding, but also control the ewes lambing time and extend the useful life of rams.
Establishment of Artificial Insemination Stations for Sheep: Sheep and artificial insemination stations should be established in villages and villages with a large number of herds. The fertilization station should establish a file system, including male and female sheep cards, ewe breeding registration forms, lamb registration forms and determination of offspring. Record table and so on. With this archive, the kinship is clear, and it is possible to plan selection of breeding options to avoid inbreeding.
Vitamins are a type of trace organic substances that humans and animals must obtain from food in order to maintain normal physiological functions. In terms of physiological functions, vitamins are neither a raw material for tissues nor a substance for supplying energy, but they are an indispensable substance for the body. It has many types and different chemical structures. Most of them are the components of the coenzyme (or prosthetic group) of certain enzymes. They are the indispensable compounds for maintaining the normal growth (growth, health, reproduction and production function) of the body. It plays a catalytic role in the body to promote the synthesis and degradation of major nutrients (proteins, fats, carbohydrates, etc.), thereby controlling metabolism. Vitamins are essentially low-molecular organic compounds. They cannot be synthesized in the body, or the amount synthesized is difficult to meet the needs of the body, so they must be supplied from the outside. The daily requirement of vitamins is very small (usually measured in milligrams or micrograms). They are neither a raw material for body tissues nor a substance for energy supply in the body. However, they do not regulate material metabolism, promote growth and development, and maintain physiological functions.
Vitamin K2 MK-7, Vitamin C, Vitamin E, Vitamin K2, Vitamin H, Vitamin D3
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