Experimental rabbit breed selection
The rabbit is an animal with many species. According to animal taxonomy, rabbits can belong to the following order elements, namely:
1. Animal world (Ani, nal), Chordata (Chordata),
2. Mammalia (Mammalia), Lagomorpha (Lag0, n0rpha),
3. Family immunity (Pzkas eight mitg), hare family (Hurcs fami19).
There are nine species and 53 species of hares in the world. Domestic rabbits are trained from wild burrowing rabbits (rock rabbits). After selection and breeding from generation to generation, more than 60 varieties and about 200 strains have been produced and formed. As an experimental animal, Kun International has recognized that rabbits have 6 inbred strains. Experimental rabbit is a kind of laboratory animal (Laboratoryani, nals), it must meet the specifications and requirements of laboratory animals. The so-called experimental animals are directionalally cultivated according to the requirements of scientific research, and the objects and materials for scientific experiments; it must have clear biological characteristics and a clear genetic background, and be subject to microbial control and training under specific environmental conditions Cultivated animals. The role of laboratory animals in life sciences, such as the precision instruments and high-purity chemical reagents required in physical chemistry experiments, should have the characteristics of higher sensitivity, better reproducibility and consistency of reaction. Therefore, only through training and training can we obtain stable and homozygous laboratory animals; we can discover and retain varieties and strains with different biological characteristics, discover and retain mutant animals, and breed various animal diseases Models, only under the control of microorganisms and the environment, the cultivation of sterile (germfree), non-specific pathogens (speceficpathogcn-? Free animals), or clean animals (clean aninds), can provide standardized activities that meet the experimental requirements Kunwu.
The rabbit was one of the earliest animals used for experiments. In the eighteenth century, the successful study of the rabies vaccine in Kunming used rabbits and black dogs as experimental animals. Since the last century, rabbits have been widely used as experimental animals and have played a unique role in the field of medical scientific research. Experimental animal sciences in developed countries such as Europe and the United States started early and developed rapidly, with complete scientific research and management institutions, a large professional team and strong scientific and technological strength, and rapid progress in experimental animal standardization. They also include new varieties of experimental animals including experimental rabbits. The research and cultivation of new strains, aseptic animals, non-specific pathogen animals, and sage animals have developed rapidly, and the supply and commercialization of supplies have been realized. This not only makes a huge contribution to scientific research, but also occupies a fairly high economic status. China's laboratory animal work began in the early twentieth century. In the 1930s, individual experimental animal species were imported from abroad, but the scale was extremely small, the scope of use was also quite narrow, and the development was extremely slow. After the founding of the People's Republic of China, the scale of experimental animals including experimental rabbits began to develop, and some production and research institutions for biological products were established, which began to develop as a laboratory animal science. In the past ten years, the government has paid more attention to the development of laboratory animal science, successively formulated many relevant policies, policies and measures, gradually established and perfected many corresponding institutions and academic groups, strengthened the corresponding teaching and scientific research in Kunming, and gradually established and perfected experiments The animal quality monitoring system has strengthened the scientific research on the nutrition and rearing of laboratory animals, carried out international exchanges, etc., which has made great progress in China's laboratory animal science. The quality of laboratory animals including the Kun experiment rabbit has greatly improved, and standardization work has also made great progress. This not only contributed to the research of life science and biomedical science in China, but also produced considerable economic benefits. In particular, experimental rabbits are easier to breed, have a wide range of uses, and standardize the work of individual economic value, strengthen quality monitoring, and gradually improve and expand the commercialization and socialization of laboratory animal supplies. This must enable the rapid development of China's laboratory animal science and laboratory animal economy.
In conducting various experiments, it is extremely important for the selection of experimental rabbit breeds. There are dozens of experimental rabbit breeds in the world. . There are currently 4 commonly used varieties in China (closed group).
(1) Japanese big ear white
Japanese big-eared white rabbit is a kind of rabbit with both skin and meat selected and bred on the basis of Chinese white rabbit. Mao Xuebai, red eyes, medium size. The adult weighs 4 to 8 kilograms, has strong limbs, and has raised ears. Fast growth and development, strong fertility, and more litters, about 8 per litter. Because of its large ears and clear blood vessels, it is easy to collect blood and inject. It is an experimental rabbit that Li Kun thinks of.
(2) New Zealand white rabbit Breed from California, USA. The hair is pure white, the skin is shiny, the body is healthy, the ears are thick and erected, and the fertility is strong. 7 to 8 per fetus. The growth is fast. The adult body weight can reach 4 to 5 kg and the temperament is mild. Has been bred into stable inbred lines. It is widely used in skin tests, pyrogen tests, induced tests, toxicity tests, insulin testing, pregnancy diagnosis and artificial pregnancy.
(3) Blue-violet rabbits bred from France, divided into standard and large strains. Each hair has three colors, namely black, gray and gray on the top, middle and bottom. The ears hang down. Fast growth and development, large-scale strains can reach an adult weight of 4-6 thousand kunk, strong reproductive capacity, 7 to 8 litters per litter. For excellent skin and meat and experimental rabbit.
(4) Chinese white rabbit is a kind of rabbit that is commonly used in China. It is small in size and compact in structure, with an adult weight of 1.5 to 2.5 kg. The hair is pure white, the ears are short and upright, strong disease resistance, rough feeding resistance, strong reproductive capacity, 8 to 10 litters per litter.
In addition, there are Himalayan albino rabbits, Belgian rabbits, Lux rabbits and so on.
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