Thorp B H
Institute for Grassland and Animal Production, Poultry Division, Roslin, Midlothian.
Res Vet Sci. 1988 Jul;45(1):83-5.
The thickness of the physeal cartilage (growth plate) was measured and the rate of longitudinal bone growth estimated in the femur, tibiotarsus and tarsometatarsus of different groups of domestic fowl. Birds were either a laying strain or broiler strain fed ad libitum, or a broiler strain on restricted feed. They were killed at different ages from hatching to 10 weeks and the mean thickness of the physeal cartilage and the mean estimated rate of longitudinal bone growth was calculated in the proximal bone extremities. Mean physeal thickness varied from 0.185 to 0.825 mm and longitudinal growth rates between 1.85 and 8.4 mm per week. When growth rates were plotted against physeal thickness the resulting scatter diagram suggested a positive linear relationship between the two. This study provides a range of baseline values for the assessment of proximal physeal thickness in other groups of fowl.
测量了不同组家禽股骨、胫跗骨和跗跖骨的骺软骨（生长板）厚度，并估计了纵向骨生长速率。这些家禽要么是自由采食的产蛋品系或肉鸡品系，要么是限饲的肉鸡品系。它们在从孵化到10周龄的不同年龄被宰杀，并计算近端骨骺的骺软骨平均厚度和纵向骨生长平均估计速率。骺平均厚度在0.185至0.825毫米之间，纵向生长速率在每周1.85至8.4毫米之间。当将生长速率与骺厚度作图时，所得散点图表明两者之间呈正线性关系。本研究提供了一系列基线值，用于评估其他家禽组近端骺厚度。
