A comprehensive introduction to the breeding of colored foxes and raccoons
Hybridization between Foxus and Arctic Foxus
The hybridization between fox and arctic fox has attracted more and more attention in fox skin production. The main reason is that the plush quality of its hybrid offspring is better than that of its parents, which overcomes the shortcomings of silver and black fox needle hair long and thick, and Arctic fox needle hair short, fine, hair easy to tangle and so on. The hybrid fox has rich fluff, flat needle hair and bright color, so it has higher commodity value.
1. Production of hybrid foxes at present, the production of hybrid foxes is mostly carried out by artificial insemination, the main reason is that the time of estrus of foxes is not synchronized with that of arctic foxes. In addition, due to the differences in temperament and somatotype between the two foxes, this intercourse is also difficult. The production of hybrid foxes generally uses red foxes, silver-black foxes or colored foxes of red foxes as male parents, and colored foxes of arctic foxes or arctic foxes as female parents for artificial insemination. If backcross, the litter size is low (Table 4). Because the hybrid fox is an intergeneric cross, it has no ability to reproduce and can only obtain commercial skin.
2. Coat color separation of hybrid fox.
(1) Red fox × blue arctic fox → 100% hybrid blue fox.
(2) Red fox × shadow fox → 50% shadow fox; 50% hybrid blue fox.
(3) Red fox × white arctic fox → 100% Golden Island fox.
(4) Golden fox × blue arctic fox → 50% hybrid blue fox; 50% blue and silver fox.
(5) Golden fox × shadow fox → 25% shadow fox, 25% silver shadow fox, 25% hybrid blue fox, 25% blue and silver fox.
(6) Golden Cross Fox x White Arctic Fox + 50% Golden Island Fox; 50% Northern White Fox.
(7) Silver black fox × shadow fox → 50% silver shadow fox; 50% silver blue fox.
(8) Silver fox × blue arctic fox → 25% hybrid blue fox; 75% silver fox.
(9) Silver fox × white arctic fox → 100% Golden Island fox.
(10) Alaskan silver fox × white arctic fox → 100% northern white fox.
(11) White gold fox (silver fox variety) x blue arctic fox + 50% white gold blue silver fox; 50% blue silver fox.
(12) Platinum fox x shadow fox → 25% shadow gold fox, 25% white gold blue silver fox, 25% shadow silver fox, 25% blue silver fox.
(13) Platinum fox x white arctic fox → 50% platinum arctic fox, 50% gold island fox or northern white fox.
Inheritance of coat color of colored arctic fox
At present, there are more than 10 types of color foxes of arctic fox varieties, and their genotypes are shown in Table 7.
The coat color separation of colored arctic foxes is as follows:
(1) Blue Arctic fox (DDFFss) x shadow fox (DDFFSs) → 50% shadow fox; 50% blue Arctic fox.
(2) Blue arctic fox (DD) × white arctic fox (dd) → 100% blue arctic fox.
(3) Blue Arctic fox (DDFF) × sapphire fox (DDff) → 100% blue Arctic fox.
(4) Blue Arctic fox (DD) × blue Arctic fox (DD) → 100% blue Arctic fox.
(5) White Arctic fox (dd) × white Arctic fox (dd) → 100% white Arctic fox.
(6) White Arctic fox (ddss) x shadow fox (DDSs) → 50% shadow fox; 50% blue arctic fox.
(7) White Arctic fox (ddFF) × sapphire fox (DDff) → 100% blue Arctic fox.
(8) White Arctic fox (ddFF) × Arctic white sapphire fox (ddff) → 100% white Arctic fox.
(9) White Arctic fox (ssFFdd) x shadow fox sapphire fox (SsffDD) → 50% blue Arctic fox; 50% shadow white fox.
Sapphire fox (ssff) × shadow fox sapphire fox (Ssff) → 50% sapphire fox; 50% shadow fox sapphire fox.
(11) Sapphire fox (ffss) x shadow fox (SsFF) → 50% shadow fox; 50% blue arctic fox.
(12) shadow fox (Ss) × shadow fox (Ss) → 67% shadow fox; 33% blue arctic fox.
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The best temperature in the snake farm? What should be the humidity?
Snakes are variable temperature animals, and the change of temperature has a great impact on their growth and activity. Therefore, to control the temperature and humidity in the snake farm within the range suitable for the growth and activities of snakes is another key subject of artificial snake breeding. In general, a temperature of 20 to 30 ℃ is most suitable for the growth and reproduction of snakes. Snakes curl up at less than 10-13 ℃ and die in large numbers when exposed to more than 40 ℃ or less than 0 ℃. Therefore, in the process of raising snakes in captivity, we should pay special attention to the outside world.
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The birth process of a mother dog
In the first step of giving birth, the mother will have labor pains and uneasy expressions due to the contraction of the uterus. From the beginning of labor pains to the time when the baby is born and leaves the mother, it only takes about an hour for each baby to be born. if it is more than an hour, you should contact the veterinarian immediately. When each baby dog is born, it will be wrapped in a thin placental membrane, when the dog mother will bite the baby's umbilical cord and lick the film with her mouth so that the baby can take a big breath, and then put the lovely dog treasure
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