Department of Poultry Science, University of Arkansas, Fayetteville, AR 72701.
Butterball LLC, Garner, NC 27529.
Poult Sci. 2020 Jan;99(1):546-554. doi: 10.3382/ps/pez485. Epub 2019 Dec 30.
There is limited information on the effects of stress and/or physiological manipulation on either plasma concentrations of corticosterone (CORT) and/or heterophil: lymphocyte (H : L) ratios in turkeys. The present studies examine the effects of catching/transportation/lairage in a holding shed and shackling on plasma concentrations of CORT and H : L ratios in male market weight turkeys. Plasma concentrations of CORT were increased after transportation and lairage but not further elevated by shackling, irrespective of its duration up to 240 s. In one study, there were increased H : L ratios following catching/placing birds into transportation cages/transportation/lairage. In one study, H : L ratios declined following shackling. It is concluded that while moving turkeys from the farm to immediately before the shackling line is stressful, shackling for up to 4 min was not perceived as more stressful in turkeys. There were also differences between farms/houses for both plasma concentrations of CORT and H : L ratios.
关于应激和/或生理操作对火鸡血浆皮质酮（CORT）浓度和/或嗜中性粒细胞：淋巴细胞（H：L）比值的影响，信息有限。本研究探讨了在畜舍中捕捉/运输/圈养以及束缚对雄性商品重火鸡血浆 CORT 浓度和 H：L 比值的影响。无论束缚持续时间长达 240 秒，运输和圈养后 CORT 浓度都会增加，但束缚不会进一步升高。在一项研究中，在将鸟类捕捉/放入运输笼/运输/圈养后，H：L 比值增加。在一项研究中，束缚后 H：L 比值下降。结论是，将火鸡从农场运送到束缚线前是有压力的，但束缚长达 4 分钟并不被认为对火鸡更具压力。在 CORT 血浆浓度和 H：L 比值方面，不同农场/房屋之间也存在差异。
