Introduction to the Culture Technology of Blue Fox

This year, Song Qingjun, a professional blue fox farmer in the tenth resident group of the fifth management area of Heshan Farm, bought 14 blue foxes last year, and this year it has grown to more than 150. The average litter size is more than 10, which is more than 40% higher than that of local female foxes. According to the investigation, his breeding has been maximized in terms of mating rate, pregnancy rate, litter rate, survival rate and economic benefits. Because the breed of blue fox he raised is pure and of high quality, the foxes and furs sell well. He has found out the following main experiences in practice and is now passing them on to fox farmers for reference. -Editor

The introduction of fine varieties of male and female foxes he raised were all bought by friends from the fur animal experimental breeding base of the Special products Research Institute of the Chinese Academy of Agricultural Sciences in Jilin Zuojia, which is an American blue fox with large size, long fur, good adaptation, high litter size, fast growth and strong disease resistance; he is willing to invest in breeding improved varieties. At the end of the year, a careful selection of male and female foxes will be carried out to eliminate inferior varieties, select good ones and leave no close relatives, so as to ensure good purity and high quality of good varieties.

At the right time, the breeding period of foxes is only once a year, the time is relatively strong, the technical requirements are higher, and the time is empty. In view of these characteristics, grasp the main estrus mating period of blue fox from early March to late April every year, strictly grasp the oestrus ovulation period of female foxes, and breed female foxes timely and accurately. Adopt the method of combining natural mating with forced mating, use single mating, double mating and multiple mating to increase the number of multiple mating, mating 4 or 5 times until the female fox refuses to mate. The mating time is controlled at 6: 8 and 17: 20. Pay attention to strengthen the breeding of male foxes, feed nutritious animal feed during the breeding period, add 1 cooked egg and 3 million cooked chickens every day, and ensure that the breeding male foxes have good exercise and rest. At the same time, we should do all the preparatory work before mating, establish mating files, and strictly prevent inbreeding.

According to the different growth periods of female foxes, such as estrus, mating, pregnancy and giving birth, feeding animal feed such as fresh miscellaneous fish and fresh pigs and chickens, hairy chickens and eggs accounted for 50% and 60% respectively. Feeding plant feed such as corn flour, wheat bran, peanut cake or soybean cake accounted for 40% and 60% (corn flour accounted for 75%, wheat bran 10%, cakes 15%). Add vitamins 5% 10%, fresh fruits and vegetables 5% 10%. In order to make the milk of the female fox sufficient, the female foxes were fed with 1 egg, 2 hairy chickens, 80 grams of fresh goat milk and 100 grams of fresh chicken liver every day during the breeding period. The female foxes were fed 3 or 4 times a day during the breeding period. After 50 days of weaning, young foxes are fed mainly with digestible, nutritious, fresh meat and eggs, and properly fed with fresh chicken liver, fresh fish and fresh vegetables, and make sure to drink enough water at the same time.

Pay attention to epidemic prevention in line with the policy of prevention over treatment, combination of prevention and control, and giving priority to prevention, for infectious diseases with fast infectivity and high mortality, such as canine distemper, viral enteritis, viral encephalitis and other infectious diseases, vaccinate male and female foxes every January and July according to the requirements of epidemic prevention. The common diseases such as bloating belly, enteritis and pneumonia of male and female foxes and young foxes can be observed, discovered and treated in time. After dividing the nests, the young foxes were injected with an anti-epidemic vaccine to drive away the worms, at the same time, pay attention to the cleanliness and hygiene of the fox houses, clean up the feces on the fox cages and clean the floor in time, and pay attention to the heat prevention and cooling of foxes and foxes.