Tickle P G, Codd J R
Faculty of Life Sciences, University of Manchester, Manchester, UK.
Poult Sci. 2009 Jan;88(1):179-84. doi: 10.3382/ps.2008-00349.
Uncinate processes extend off the vertebral ribs in most species of bird. The processes are a crucial component of ventilatory mechanics, being involved in inspiration and expiration. Here we examine the pattern of ossification of the uncinate processes using histochemistry and biomechanical testing in developing domestic turkeys (Meleagris gallopavo). Ossification begins just before hatching, and the processes are fully ossified in the adult bird. We suggest that the development of these processes is linked to the onset of air breathing and the increase in sternal mass that occurs after hatching.
在大多数鸟类物种中，钩突从椎肋延伸出来。这些突起是呼吸力学的关键组成部分，参与吸气和呼气过程。在这里，我们使用组织化学和生物力学测试，研究了发育中的家火鸡（吐绶鸡）钩突的骨化模式。骨化在孵化前就开始了，并且在成年鸟类中这些突起完全骨化。我们认为这些突起的发育与空气呼吸的开始以及孵化后胸骨质量的增加有关。
