GROWTH OF LONG BONES IN CHICKEN - RATES OF GROWTH IN LENGTH + DIAMETER OF HUMERUS TIBIA + METATARSUS
GROWTH OF LONG BONES IN CHICKEN - RATES OF GROWTH IN LENGTH + DIAMETER OF HUMERUS TIBIA + METATARSUS
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DOI：
10.1002/aja.1001140310
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发表时间：
1964-01-01
影响因子：
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通讯作者：
JOHNSON, LC
中科院分区：
文献类型：
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作者：
CHURCH, LE;JOHNSON, LC
对孵化3日龄至60wk的680只不同日龄雏鸡进行了每日X射线连续测量和解剖骨骼的直接测量，以确定长骨的生长速度。在孵化之后。大多数长骨不含次级骨化中心。距骨近端和胫骨近端和远端是例外。计算从形成到吸收的时间长度，分别为骨骺生长板和中干皮质。生长板的总寿命为1.75~7.0d，皮质在生长期内的寿命为0.5d~5d。第一周时填满干骺端的未钙化的大圆锥形软骨。一旦卵黄囊完全吸收，就会迅速消失。卵黄囊代谢可能是钙化失败和软骨吸收延迟的原因。
The growth rate of long bones was determined by daily serial measurements from X-rays and direct measurement of dissected bones of 680 chickens of various ages from three days'' incubation to 60 wks. after hatching. Most long bones contain no secondary centers of ossification. The proximal end of the metatarsus and the proximal and distal ends of the tibia were exceptions. The length of time between formation and resorption was calculated for the epiphyseal growth plate and midshaft cortex. The total life span of the growth plates ranged between 1.75 and 7.0 days, and the life span of the cortex ranged between 0.5 and 5 days during growing period. The large cone of uncalcified cartilage that filled the metaphysis during the first wk. disappeared rapidly as soon as the yolk sac was completely resorbed. Yolk sac metabolism may account for the failure of calcification and delay in cartilage resorption.