Commercial broilers （CB） have been generally reared in Korea; however, Korean native chicken （KNC） is also bred for meat production. This study was performed to evaluate the behavioral characteristics of Korean na...Commercial broilers （CB） have been generally reared in Korea; however, Korean native chicken （KNC） is also bred for meat production. This study was performed to evaluate the behavioral characteristics of Korean native chickens （Han-hyup） and commercial broilers （Ross 308）. In the study, KNC and CB were separately housed in 4 pens （30 birds/pen）, so there were two replicates for each treatment. Chickens were observed by video recording throughout the 8 weeks growth period for 12 hours each day. The time spent （standing, sitting, and walking） and frequencies （drinking, feeding, preening, dust-bathing, flapping, aggressive pecking, and ground pecking） of chicken＇s behavior were evaluated. Behavior was compared between the earlier period （1 to 4 weeks） and the later one （5 to 8 weeks） to know the changes in each behavior as they matured. Results showed that more time was spent on standing by KNC than CB. On the contrary, time spent for sitting behavior was less in KNC. The frequencies of most behaviors in KNC were higher than CB in the earlier period except feeding and dust-bathing. The greatest decreasing behavior as they matured was walking in both treatments, and a large number of commercial broilers did not walk, but instead rested as days passed. Feeding behavior of CB was more frequent in the earlier stage, but gradually reversed in the later period. The active behaviors such as fe, eding, preening, pecking, flapping and aggressive pecking in the KNC group were higher than the CB group, declining as time passed in both treatments; except dust-bathing that showed opposite pattern. These results were showed that KNC are much more active compared to CB, especially for walking, preening and pecking behavior. This may conclude that they may have fewer tendencies to develop potential health problems like dermatitis or even disease like sudden death syndrome.展开更多
文摘Commercial broilers （CB） have been generally reared in Korea; however, Korean native chicken （KNC） is also bred for meat production. This study was performed to evaluate the behavioral characteristics of Korean native chickens （Han-hyup） and commercial broilers （Ross 308）. In the study, KNC and CB were separately housed in 4 pens （30 birds/pen）, so there were two replicates for each treatment. Chickens were observed by video recording throughout the 8 weeks growth period for 12 hours each day. The time spent （standing, sitting, and walking） and frequencies （drinking, feeding, preening, dust-bathing, flapping, aggressive pecking, and ground pecking） of chicken＇s behavior were evaluated. Behavior was compared between the earlier period （1 to 4 weeks） and the later one （5 to 8 weeks） to know the changes in each behavior as they matured. Results showed that more time was spent on standing by KNC than CB. On the contrary, time spent for sitting behavior was less in KNC. The frequencies of most behaviors in KNC were higher than CB in the earlier period except feeding and dust-bathing. The greatest decreasing behavior as they matured was walking in both treatments, and a large number of commercial broilers did not walk, but instead rested as days passed. Feeding behavior of CB was more frequent in the earlier stage, but gradually reversed in the later period. The active behaviors such as fe, eding, preening, pecking, flapping and aggressive pecking in the KNC group were higher than the CB group, declining as time passed in both treatments; except dust-bathing that showed opposite pattern. These results were showed that KNC are much more active compared to CB, especially for walking, preening and pecking behavior. This may conclude that they may have fewer tendencies to develop potential health problems like dermatitis or even disease like sudden death syndrome.
