ZDGR.htm

NR ZDGR

AU Jones,R.B.

TI The nature of handling immediately prior to test affects tonic immobility fear reactions in laying hens and broilers

QU Applied Animal Behaviour Science 1992; 34: 247-254

PT journal article

AB The manual harvesting of poultry prior to transportation is a potentially traumatic process but there is some confusion concerning the relative stressful properties of gentle versus rough handling. The tonic immobility fear reactions of aged laying hens and of 6-week-old broilers (meat-type chickens) were therefore measured immediately after their exposure to one of three brief handling treatments. These were: (1) standard (bird carried upright with the wings held close to its body); (2) upright / stroking (standard procedure plus held upright for a further 30 s and stroked); (2) rough (standard treatment plus held by the legs and inverted for 30 s). Rough handling prolonged the latency until the first alert head movement and the duration of tonic immobility in both strains. It also increased susceptibility to tonic immobility in the broiler chickens. These findings are consistent with the suggestion that rough handling elicited greater fear in laying hens and broilers than did the other handling treatments.

SP englisch

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