Sözcü Arda, İpek Aydın, Oğuz Züleyha, Gunnarsson Stefan, Riber Anja B
Department of Animal Science, Faculty of Agriculture, Bursa Uludağ University, Bursa 16059, Turkey.
Poultry Research Institute, Republic of Turkey Ministry of Agriculture and Forestry, Ankara 06560, Turkey.
Animals (Basel). 2021 Dec 27;12(1):46. doi: 10.3390/ani12010046.
Free-range systems are considered to improve bird health and welfare, thereby satisfying consumer demands. Behavioral time budget, fear level and clinical welfare indicators were compared for two Turkish laying hen genotypes, Atak-S (brown) and Atabey (white), reared in a free-range system. A total of 420 laying hens (210 Atak-S, 210 Atabey) were studied between 19 and 72 weeks of age. Higher percentages of eating and drinking behavior, feather pecking, and explorative pecking were observed for Atak-S hens, whereas Atabey hens were preening, walking-standing, and resting more. The duration of tonic immobility was longer, and the number of inductions was lower in Atabey compared with Atak-S hens. Atabey hens had less keel bone damages and better plumage conditions on the breast, wing, and tail at 56 and 72 weeks of age than Atak-S hens. Footpad dermatitis was more common in Atabey hens at 40 weeks, whereas Atak-S hens had a higher prevalence of footpad dermatitis with moderate lesions at 72 weeks of age. These findings indicate that free-range Atak-S hens may be more prone to keel bone damage and development of feather pecking, but they showed less foot lesions and were less fearful.
放养系统被认为可以改善家禽健康和福利，从而满足消费者需求。对在放养系统中饲养的两种土耳其蛋鸡品种Atak-S（棕色）和Atabey（白色）的行为时间分配、恐惧水平和临床福利指标进行了比较。总共420只蛋鸡（210只Atak-S，210只Atabey）在19至72周龄期间接受了研究。观察到Atak-S母鸡的采食和饮水行为、啄羽和探索性啄食的比例更高，而Atabey母鸡梳理羽毛、行走站立和休息的时间更多。与Atak-S母鸡相比，Atabey母鸡的强直静止持续时间更长，诱导次数更少。在56周和72周龄时，Atabey母鸡的龙骨损伤更少，胸部、翅膀和尾部的羽毛状况更好。在40周龄时，脚垫皮炎在Atabey母鸡中更为常见，而在72周龄时，Atak-S母鸡中脚垫中度损伤的患病率更高。这些发现表明，放养的Atak-S母鸡可能更容易出现龙骨损伤和啄羽行为，但它们的足部病变较少，恐惧程度较低。
