The problem of adding eggs in Fur Animal Feed

(1) time and quantity of eggs: eggs should be supplied in two periods in the production of fur animals, while in other periods, they can not be given.

The first period: eggs should be added step by step from 2 weeks before mating. In the 10 days before mating, the supply of male minks can be halved by adding one egg for every 4 to 6 male foxes, and the supply of female minks will be halved after 10 female foxes add one egg.

And then gradually increase.

During the period of mating, the supply of male minks should be halved by adding 1 or 2 eggs a day (depending on the size of the animal), while the supply of female minks should be halved by half a day. Note: the raw material change of fur animal feed can not be changed suddenly, but it should be gradually increased or decreased for a week, so as not to affect the animal feed intake because the feed change is too sudden.

After breeding, the task of the male animal has been completed, and the eggs can be gradually discontinued in 7 days; the female, due to conception (carrying a cub), there is a pregnancy effect (- the absorption and utilization of nutrients in feed will be higher than animals without pregnancy), and the use of eggs should also be gradually reduced. During this period, if a large amount of nutrients such as eggs are supplied, it will lead to a large amount of deposition of nutrients, which will affect the development of embryos. For example, a silver-black fox weighs only 1 gram in the first 30 days of pregnancy and only 5 grams at 35 days.

The second period: 30 days after the fur animal is conceived (with a cub), the amount of eggs should be increased gradually. Because, a large number of studies have found that fur animal embryos after 30 days, the growth rate is very fast, every day is different from the individual the day before, therefore, it is necessary to gradually strengthen the supply of nutrients. At first, the supply of eggs was halved by 20 female foxes and minks. The rate of increase should be even slower. By 40 days after conception, the weight of a silver-black fox fetus can reach 10 grams, and by 48 days, the weight will soar to about 65 grams. The addition of eggs should reach half an egg per day for each female fox and one egg for every four female minks. When it comes to delivery, the supply and increase of eggs should be greater.

Until 15 days after giving birth to the mother's feed (pay attention to the use of the "opening material" for fur animals produced by the Beijing Institute of Biotechnology, until 15 days after litter, it gradually increased from 5 grams to 150 grams per day. Breeders before breeding can also be used), the supply of eggs should reach a maximum of one egg per day for each mother. During this period, the amount of milk or goat's milk should also be increased. Then gradually use cheaper animal protein raw materials than eggs (imported fish meal, high-quality meat meal, etc.) to replace.

(2) how to use eggs: it is best not to feed raw eggs to fur animals and not to overcook them. 8 mature sugar eggs (like egg blossoms) are the easiest to absorb and the most efficient to use.

(3) Note: eggs must be gradually increased or reduced, do not be fast, otherwise it is easy to appear anorexia, refuse to eat phenomenon. Because, the taste of fur animals is very developed.