Antler cyclic growth and development


1 . Exfoliation or detachment (or exfoliation) is the process in which the horn and remaining corners or horns come off during the germination of new larvae in the following year. Eight to ten months after birth, the deer begins to develop projections on the wrinkled skin at the forehead, and forms keratin bases. On this basis, the first antler is produced. The first hornless hornless horn has a relatively high degree of ossification, and the velvet hair is long and thick, with no separation. Due to individual differences, the germination and growth rate of the first antler differed greatly. In the early days of the early summer, the first corner fell off naturally before and after the summer, and then the antler (head saw antler) that conforms to the specifications of the commodity was gradually released as the age increased. The morning and evening of the stripping and the deer's climate, body condition, etc. Factors related. Under normal circumstances, the 3-year-old plum deer shed more in June, the 4-5 year-old deer concentrated in May and the 6-7 year old deer retired in early April and early May. It was about 25 days earlier than the deer and gradually advanced from the north to the south.
2 . The process of disc removal: before the disc falls off, the osteoclasts and polynuclear cells at the junction of the keratin base and the disc are active and gradually erode. The reabsorption of Harvard's thin plate occurs at the inner and outer periphery of the kerma. Absorb sinuses, these sinuses extend rapidly, and finally merge into each other to form a separation layer, which, together with the role of mechanical force, causes the horns to come off. The reason why the corner disc falls off is still debated, but it is generally believed that the level of testosterone in the deer falls to a certain extent.

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