Wyers M, Cherel Y, Plassiart G, Chabeauti E, Mariau V, Fernandez B, Guéreaud C, Guigand L
Ecole nationale vétérinaire, laboratoire d'anatomie pathologique, Unité associée INRA, Nantes, France.
Reprod Nutr Dev. 1993;33(6):511-30.
The comparative cortical growth of the tibiotarsus was studied in 2 turkey strains, one light, one heavy, between 3 and 12 weeks of age, using histological and histomorphometrical methods. The growth in thickness started earlier and was much faster and larger in the heavier turkey strain. The early ovoid shape of the cortex of the heavier strain and the difference between the thickness of the narrow and the thick cortical faces seemed to be related to the action of strong mechanical strains. Nevertheless the diaphyseal cortical ratio remained not significantly different in the 2 strains from the age of 3 weeks. The light strain exhibited during all the studied periods indicated a more variable mineral apposition rate and earlier and more extensive bone remodelling phenomena. Most of the growth in thickness parameters were significantly higher in the heavier strain when turkeys of the 2 strains were compared at an equivalent weight.
采用组织学和组织形态计量学方法，对2个火鸡品系（1个轻型品系、1个重型品系）3至12周龄期间胫跗骨的皮质生长情况进行了研究。重型火鸡品系皮质厚度的增长开始得更早，速度更快，幅度更大。重型品系皮质早期呈卵形，狭窄面与宽厚面皮质厚度的差异似乎与强大机械应力的作用有关。然而，从3周龄起，两品系骨干皮质比率并无显著差异。在整个研究期间，轻型品系显示出矿物质沉积率变化更大，且骨重塑现象出现得更早、范围更广。当比较两品系体重相当的火鸡时，重型品系的大多数厚度生长参数显著更高。
