Selection and selection of white raccoon dog
At present, the coat color of the white raccoon dog type in China has been very stable, that is, the part of the white hair is white regardless of the needle hair and the villi are all white, and there is no other miscellaneous color (such as the needle hair is white and the villi is not white or part of the body is not white, etc.). Therefore, the selection of white raccoon dogs should focus on coat color, fur quality and body shape, especially male raccoon dogs.
The selection of white raccoon dogs should be mated with wild-type raccoon dogs, but not among white raccoon dogs. White raccoon dogs generally have the disadvantage of thick and long needle hair, and the selected wild raccoon dogs had better have short and dense needle hair to correct the shortcomings of white raccoon dogs.
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Diagnosis and treatment of ⅰ paramyxovirus infection in American King Pigeon
In recent years, with the change of rural economic structure, American white-feathered king pigeon farming has gradually developed in our city. From January to May 2002, some royal pigeon farms in Youxian District, Fucheng District, Anxian County, Santai County and Shantong County in Mianyang City broke out successively with diseases characterized by green water samples, sparse feces, no food, short course of disease and high mortality, which caused serious economic losses to farmers. Pigeon Ⅰ paramyxovirus infection was diagnosed by on-site comprehensive diagnosis (epidemiology, symptoms, autopsy) and laboratory examination. Use
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Snake bite antidote of the immune system
New research suggests that immune cells called mast cells help protect mice from some poisonous snake bites and bee stings. Although the role of mast cells in helping to produce symptoms of anaphylactic shock, asthma and allergies is most clear, scientists also recognize that these cells play other auxiliary roles in the immune system in dealing with infection. The venom of many insects and reptiles contains chemicals that activate mast cells, so researchers generally believe that the role of mast cells worsen snake bites or insect stings
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