Density and breaking strength of bones of mortalities among caged layers
Density and breaking strength of bones of mortalities among caged layers
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DOI：
10.1016/s0034-5288(96)90017-x
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发表时间：
1996-03-01
影响因子：
2.4
通讯作者：
Kilpatrick, DJ
中科院分区：
文献类型：
--
作者：
McCoy, MA;Reilly, GAC;Kilpatrick, DJ
研究了一个产蛋周期内5000只商品蛋鸡笼层骨质疏松症（CLO）死亡率及相关骨强度参数。在9.7%的死亡率中，35%归因于CLO， CLO母鸡的平均死亡年龄（45.5周）明显早于非CLO母鸡的平均死亡年龄（51.6周）。全骨密度与全骨断裂强度呈显著的线性关系，CLO组与非CLO组无显著差异。然而，非CLO母鸡的骨骼密度和断裂强度始终大于CLO母鸡。两组鸟类骨骼的密度和断裂强度都随着年龄的增长而增加。
The incidence of deaths attributable to cage layer osteoporosis (CLO) and the associated parameters of bone strength were studied in a flock of 5000 commercial laying hens over one laying cycle. Of the 9.7 per cent mortality rate, 35 per cent were attributed to CLO, and the mean age of death of the CLO hens (45.5 weeks) was significantly earlier than that of the non-CLO hens (51.6 weeks). There was a significant linear relationship between the density and breaking strength of whole bones with no difference between the CLO and non-CLO hens. However, the density and breaking strength of the bones of the non-CLO hens were consistently greater than those of the CLO hens. The density and breaking strength of the bones of both groups of birds increased with age.