The influence of line and laying period on the relationship between different eggshell and membrane strength parameters
The influence of line and laying period on the relationship between different eggshell and membrane strength parameters
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DOI：
10.1093/ps/85.7.1309
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发表时间：
2006-07-01
期刊：
影响因子：
4.4
通讯作者：
De Baerdemaeker, J. G.
中科院分区：
文献类型：
--
作者：
Kemps, B. J.;Govaerts, T.;De Baerdemaeker, J. G.
我们研究了不同蛋壳和膜强度参数之间的相关性及其随时间的变化。从第33周到第78周，测量了2个不同系的产蛋鸡Hisex Brown和Bovans Brown的蛋壳和膜特性。研究了几个参数：2个关于蛋壳总强度（静态和动态刚度）的参数，1个结构参数（即，蛋壳厚度）、2个描述壳的材料特性的参数[动态杨氏模量（EM）和氮含量]和3个测量膜特性的参数（附着力、断裂强度和氮含量）。结果表明，在产蛋过程中，各参数间的相关性是变化的，各品系间的相关性也是变化的。在产蛋期间，海塞克斯品系蛋壳的EM增加。在Bovans线的情况下未观察到差异。一般来说，蛋壳厚度和EM之间呈负相关。静刚度和动刚度之间的相关性在铺设过程中增加。最后，在铺设期间，膜的附着力和断裂强度下降。
We investigated the correlations between different eggshell and membrane strength parameters and their changes over time. Eggshell and membrane characteristics were measured for 2 different lines of laying hens, Hisex Brown and Bovans Brown, from wk 33 up to wk 78. Several parameters were investigated: 2 parameters concerning total eggshell strength ( static and dynamic stiffness), 1 structural parameter (i.e., eggshell thickness), 2 parameters describing the material characteristics of the shell [ dynamic Young's modulus ( EM) and nitrogen content], and 3 parameters to measure the membrane characteristics ( attachment force breaking strength and nitrogen content). This study shows that the correlations among parameters change during the laying period and among lines. The EM of the eggshell increased during the laying period for the Hisex line. No difference was observed in case of the Bovans line. In general, a negative correlation was obtained between eggshell thickness and the EM. The correlation between static and dynamic stiffness increased during lay. Finally, the attachment force and breaking strength of the membranes declined during the laying period.