The "naked back disease" of laying hens is caused by repeated copulation of cocks and frequent sharp grasping of claws in one day. It occurs mostly at the end of winter and early spring. At this time, the temperature is still low and there is no feather covering on the back. Not conducive to chicken body warm, and often suffer from fear of chicken back pain, cock a contact that is to escape, flee, the nerves are often in tension, resulting in the production of eggs affected.
Preventive measures: In the late winter and early spring, all claws of all cocks are cut off and flattened so that they will be caught without injury. For cockerels that are to be reserved for species use, they will be severed at 6 to 9 years of age, and the remaining claws will remain. The parts are burned so that they never regenerate. The naked back of the hen is generally not used for any treatment. As long as the cock has no claws, it can slowly grow back.
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