Breeding techniques of colored foxes

Fox is a member of the canine family, which is divided into two genera. There are silver foxes (silver and black foxes), red foxes and colored foxes, while arctic foxes have blue foxes and colored arctic foxes. Color fox and color sample polar fox are mutants from coat color variation, because the coat color variation of foxes is carried out under natural conditions, and the general mutation rate is only 1/100000 or 1/1000000. Scarcity is precious, and a piece of high-quality colored fox skin costs as much as thousands of dollars. Foreign countries have studied and raised colored foxes for more than 50 years, and now there are more than 30 kinds of colored foxes. In order to develop the breeding industry of color foxes in China as soon as possible, in addition to making full use of the limited population of color foxes, strengthening the breeding management, increasing the reproduction rate and expanding the population of color foxes, it is suggested that the following measures should be taken: 1. To improve the utilization rate of public color foxes by mating with female foxes and silver foxes. For example, when platinum foxes mate with red foxes, 50% golden foxes and 50% standard cross foxes appear in the offspring; platinum foxes mate with silver foxes to produce 50% platinum foxes and 50% silver foxes. A male fox can be matched with 4 or 6 females under natural conditions. If artificial insemination is used, a male fox can be matched with about 50 females. Therefore, breeders should introduce more public color foxes, do not kill animals and take skins easily, and make full use of the fecundity of public color foxes. 2. The mutant colored fox was obtained by mating silver fox or red fox with different genes. Chinese farms have begun to raise silver foxes since 1988, and new consanguinity has been introduced in recent years, so that the original population contains many genotypes, and colored foxes such as pearl, amber and chocolate have appeared in the young foxes.