Feed for artificially raised deer can be divided into the following three categories:
1, coarse grains
Straw, by-products, litter and wormwood of all crops are good feed for deer.
Step 2 concentrate feed
Concentrated feed mainly consists of corn, soybean bran, calf feed, salt, additives and ingredients in a certain proportion (50% of Gramineae seeds (such as corn, barley and wheat), 30% of leguminous seeds (beans or soybean meal) and 20% of bran (rice bran or wheat bran)). Add a little salt and bone meal. )。
3. nutrients
In the physiological activities of deer, the indispensable minerals are mainly calcium, phosphorus, potassium, sodium, chlorine, iron, manganese, copper, zinc, magnesium, cobalt and sulfur. Fat-soluble vitamins such as A, D, E and K, and water-soluble vitamins such as B and C are all necessary for deer.
Extended data
Growth and reproduction
Horns are the second characteristic of stags (only reindeer Rangifer tarandus has horns for both sexes) and are also courtship weapons. Its growth and shedding are influenced by pituitary and testosterone.
After the breeding season, the antlers in the north fall off from the Mao Kou below, and come out from the Mao Kou above the frontal bone 1 opposite joint the next year. The newly grown horn is called velvet antler, which has skin and hair and a large number of blood vessels for blood supply. As the horn grows up, the blood supply gradually decreases and the skin dries out.
When 1 ~ 2 years old, the initial angle is almost straight, and the bifurcation of the posterior angle increases year by year until adulthood. Female deer of horned species have no tusks if they have no horns. The male deer is bigger than the female deer. The coat color is deep in winter and shallow in summer. Most young deer have white spots, and some species (such as sika deer and arrow deer) also have spots on their bodies.
The foot has four toes, the third and fourth toes are developed to support the body weight, and the second and fifth toes degenerate and become smaller. The doe has two pairs of nipples. Tropical deer have no fixed breeding season, and they are in estrus many times a year, and their horns do not fall off; Temperate deer mate from late autumn to winter, mostly one male and many females, and each litter gives birth to 1 ~ 2 litters, mostly 3 ~ 4 litters.