Keel fracture changed the behavior and reduced the welfare, production performance, and egg quality in laying hens housed individually in furnished cages.
Keel fracture changed the behavior and reduced the welfare, production performance, and egg quality in laying hens housed individually in furnished cages.
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龙骨断裂改变了单独饲养在配有家具的笼中的蛋鸡的行为并降低了其福利、生产性能和鸡蛋质量
DOI：
10.1016/j.psj.2020.04.001
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发表时间：
2020-07
期刊：
影响因子：
4.4
通讯作者：
Bao J
中科院分区：
文献类型：
--
作者：
Wei H;Bi Y;Xin H;Pan L;Liu R;Li X;Li J;Zhang R;Bao J
龙骨断裂对蛋鸡的福利、行为、健康、生产性能和蛋品质均有不利影响。为此，本研究选用90只17周龄、龙骨正常的健康罗曼白蛋鸡（WOA），分别饲养在带家具的笼子里。根据5个时间点（22、27、32、37和42 WOA）触诊的龙骨状态，分别标记为骨折（FK）或正常（NK）。触诊后，在每个时间点连续观察2天，分别在27-32 WOA、32-37 WOA和37-42 WOA记录FK和NK蛋鸡的产蛋总数、脏蛋数、破蛋数和采食量。每次行为观察结束后，随机选取10只新鲜FK母鸡和10只NK母鸡，测定福利和蛋品质。结果表明，蛋鸡龙骨骨折的发生率随蛋鸡年龄的增长而增加。与NK母鸡相比，FK母鸡的坐、站行为显著增加（P < 0.05），采食、行走、栖、跳行为显著降低（P < 0.05）。NK和FK蛋鸡在饮水、梳理、安慰、啄笼和筑巢行为方面无显著差异（P < 0.05）。试验期间，与NK蛋鸡相比，FK蛋鸡产蛋率、体重、日采食量、蛋壳强度、厚度和重量降低（P < 0.05），补动不动时间延长（P < 0.05）。27 ~ 32 WOA时，蛋鸡破蛋率显著提高（P < 0.05）。脏蛋率、蛋形指数、蛋白质高度、哈夫单位、羽盖评分、趾足健康评分差异均不显著（P < 0.05）。因此，蛋鸡龙骨骨折导致蛋鸡行为改变，降低了蛋鸡的福利、生产性能、采食量和蛋壳品质。
Keel fracture has adverse effects on welfare, behavior, health, production performance, and egg quality of laying hens. To investigate this, 90 healthy Lohmann white laying hens with normal keel bones at 17 wk of age (WOA) were used in this study and housed individually in furnished cages. All hens were marked with fractured keel (FK) or normal keel (NK) based on the keel bone status through palpation at 5 time-points (22, 27, 32, 37, and 42 WOA). After the palpation, the behavior was observed for 2 consecutive days at each time-point, and the total number of eggs produced, dirty eggs, broken eggs, and feed intake of FK and NK laying hens were recorded at 27–32, 32–37, and 37–42 WOA, respectively. After each behavioral observation, 10 fresh FK hens and 10 NK hens were randomly selected to determinate the welfare and egg quality. The results showed that the incidences of keel fracture increased with the age of laying hens. Compared with NK hens, the sitting and standing behaviors significantly increased (P < 0.05) while feeding, walking, perching, and jumping behaviors significantly decreased (P < 0.05) in FK hens. There were no significant changes in drinking, preening, comforting, cage pecking, and nesting behaviors between NK and FK hens (P > 0.05). During the experiment period, the egg production rate, body weight, daily feed intake, and eggshell strength, thickness, and weight decreased (P < 0.05) and duration of tonic immobility increased (P < 0.05) in FK hens compared with those in NK hens. At 27–32 WOA, FK hens had significantly elevated broken egg rate (P < 0.05). There were no significant differences in the dirty egg rate, egg shape index, protein height, Haugh unit, feather cover score, and toe and foot pad health score (P > 0.05). Therefore, keel fracture in laying hens caused changes in behavior and reduced the welfare, production performance, feed intake, and eggshell quality.
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影响因子：
4.4
作者：
Heerkens, J. L. T.;Delezie, E.;Tuyttens, F. A. M.
通讯作者：
Tuyttens, F. A. M.
影响因子：
3.6
作者：
Jung, L.;Niebuhr, K.;Knierim, U.
通讯作者：
Knierim, U.
DOI：
10.3390/ani5040406
发表时间：
2015-11-27
期刊：
Animals : an open access journal from MDPI
影响因子：
--
作者：
Gebhardt-Henrich SG;Fröhlich EK
通讯作者：
Fröhlich EK
影响因子：
4.4
作者：
Lay, D. C., Jr.;Fulton, R. M.;Porter, R. E.
通讯作者：
Porter, R. E.
影响因子：
16.4
作者：
Barlow, DH
通讯作者：
Barlow, DH