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KMID : 1025520200620020276
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Journal of Animal Science and Technology
2020 Volume.62 No. 2 p.276 ~ p.291
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Adaptational changes of behaviors in hens introduced to a multi-tier system
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Cheon Si-Nae
Choi Yang-Ho
Park Kyu-Hyun
Lee Jun-Yeob
Jeon Jung-Hwan
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Abstract
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This study was conducted to investigate behavioral changes in laying hens (Hy-Line Brown) after transfer to a multi-tier system from the floor system and to examine their production performance. The hens were randomly divided into two groups and were allocated to the multi-tier system and the floor system at a commercial farm. Behavior of the laying hens was recorded by CCD (charge-coupled device) cameras and a digital video recorder. The data were scanned every 2 min to obtain an instantaneous behavioral sample or were immediately counted whenever the hens exhibited a designated behavior. Behavior changed dramatically during the first seven days. Egg production was higher in the multi-tier system, while cracked and dirty eggs were more frequent in the floor system (p < 0.05). No differences in mortality rate or egg quality were observed between the groups. In conclusion, the hens needed at least seven days to adapt to the multi-tier system. The multi-tier system was more efficient than the floor system in terms of production performance.
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KEYWORD
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Animal welfare, Behavior, Floor system, Laying hens, Multi-tier system, Production performance
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