Comparative study on stress-induced hyperthermia, level of fear and behaviour of two genetically selected strains of domestic chicks to playback calls

Iyasere, Oluwaseun S.; Oyeniran, Victor J.; Durosaro, Samuel O.; Fafiolu, A. O.; Ojelade, Oluwaseun C.; Ajayi, Oreoluwa D.

doi:10.1016/j.applanim.2021.105465

Cited by 1 publication

(2 citation statements)

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“…Besides the established knowledge on chicken calls presented in the beginning of this section, discrepancies are also observed on more recent work: few behavioral and physiological differences were observed when comparing individuals' reactions to neutral/positive (food call or trills of pleasure) and negative (alarm or distress calls) vocalizations, which suggests that domestic chickens may not be able to discriminate them [33][34][35]. These discrepancies may be related to the birds' breed origin.…”

Section: Introductionmentioning

confidence: 85%

“…To prevent differences in the intensity of the response of the bird, all calls were broadcast with the same intensity. Following previous studies [16,33,34], calls were played at ~70 dB (A) (measured using a Tadeto SL720 sound level meter, at the bird level). Birds were kept in the testing pen for 2 min following the broadcast of the playback stimulus, and then brought back to their cages.…”

Section: Habituation Period and Playback Experimentsmentioning

confidence: 99%

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Effects of domestication on responses of chickens and red junglefowl to conspecific calls: A pilot study

et al. 2022

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Beyond physical and zootechnical characteristics, the process of animal domestication has also altered how domesticated individuals, compared to their wild counterparts, perceive, process, and interact with their environment. Little is known, however, on whether and how domestication altered the perception of conspecific calls on both domesticated and wild breeds. In the present work, we compared the vigilance behavior of domestic and captive-born wild fowl following the playback of chicken alarm calls and contentment calls (control). The playback tests were performed on four different breeds/lines. We first compared the behavioral reaction of domesticated White Leghorn (WL, a breed selected for egg production) and Red Junglefowl (RJF) hens (ancestor of domestic chickens). We also compared the behavior of Red Junglefowl hens selected for high or low fear of humans (RJF HF and RJF LF, respectively), a proxy to investigate early effects of domestication. Contrary to our expectations, no breed/line reacted accordingly to the calls, as the increase in vigilance behavior after the playback calls was similar for both alarm and contentment calls. Although no call discrimination differences were found, breeds did differ on how they reacted/habituated to the calls. Overall, WL were more vigilant than RJF, and birds from the RJF LF line decreased their vigilance over testing days, while this was not the case for the RJF HF line. These results suggest that birds under commercial-like conditions are unable to discriminate between alarm and contentment calls. Interestingly, domestication and selection for low fear of humans may have altered how birds react to vocal stimuli. It is important to consider that farmed animals may interpret and be affected by the vocalizations of their conspecifics in unexpected ways, which warrants further investigation.

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Section: Introductionmentioning

confidence: 85%

Section: Habituation Period and Playback Experimentsmentioning

confidence: 99%