Recognition and Assessment of Pain-Related Behaviors in Avian Species: An Integrative Review

Mikoni, Nicole A.; Guzmán, David Sánchez-Migallón; Fausak, Erik Davis; Paul-Murphy, Joanne R

doi:10.1647/21-00008

Cited by 3 publications

(7 citation statements)

References 124 publications

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“…Pain behavior in general is influenced by a variety factors specific to the stimulus or the affected animal. For example, noxious agents can differ in duration (acute or chronic), source (somatic or visceral) and severity (mild to severe), each of which may provoke a different reaction 9,10,27 . Since behavioral responses vary extensively depending on the species and stimulus, any description is valid only for the specifically described case and cannot be transferred to another species without reevaluation 10 .…”

Section: Discussionmentioning

confidence: 99%

“…For example, noxious agents can differ in duration (acute or chronic), source (somatic or visceral) and severity (mild to severe), each of which may provoke a different reaction 9,10,27 . Since behavioral responses vary extensively depending on the species and stimulus, any description is valid only for the specifically described case and cannot be transferred to another species without reevaluation 10 . In our study, we applied an acute mechanical stimulus to the beak base of chicken embryos.…”

Section: Discussionmentioning

confidence: 99%

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Nociception in chicken embryos, Part III: Analysis of movements before and after application of a noxious stimulus

Suess

Werner

Saller

et al. 2023

Preprint

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Many potentially noxious interventions are performed on chicken embryos in research and in the poultry industry. It is therefore essential and in the interest of animal welfare to be able to precisely define the point at which a chicken embryo is capable of nociception in ovo. The present part III of a comprehensive study examined the movements of developing chicken embryos with the aim of identifying behavioral responses to a noxious stimulus. For this purpose, a noxious mechanical stimulus and a control stimulus were applied in a randomized order. The recorded movements of the embryos were evaluated using the markerless pose estimation software DeepLabCut and manual observations. After the application of the mechanical stimulus, a significant increase in beak movement was identified in 15- to 18-day-old embryos. In younger embryos, no behavioral changes related to the noxious stimulus were observed. The presented results results indicate that noxious mechanical stimuli at the beak base evoke a nocifensive reaction in chicken embryos starting at embryonic day 15.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Nociception in chicken embryos, Part III: Analysis of movements before and after application of a noxious stimulus

Suess

Werner

Saller

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Pain behavior in general is influenced by a variety of factors specific to the stimulus or the affected animal. For example, noxious agents can differ in duration (acute or chronic), source (somatic or visceral) and severity (mild to severe), each of which may provoke a different reaction [9,10,31]. Since behavioral responses vary extensively depending on the species and stimulus, any description is valid only for the specifically described case and cannot be transferred to another species without re-evaluation [10].…”

Section: Discussionmentioning

confidence: 99%

“…Behavioral studies have been conducted in a variety of avian species [10]. Many of these studies used chickens (Gallus gallus domesticus) and evaluated nociceptive responses to procedures that are assumed to be painful or elicit discomfort [10,11]. The typical behavior of chicken embryos has long attracted scientific interest [10,11].…”

Section: Introductionmentioning

confidence: 99%

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Nociception in Chicken Embryos, Part III: Analysis of Movements before and after Application of a Noxious Stimulus

Süß,

Werner,

Saller

et al. 2023

Animals

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Many potentially noxious interventions are performed on chicken embryos in research and in the poultry industry. It is therefore essential and in the interest of animal welfare to be able to precisely define the point at which a chicken embryo is capable of nociception in ovo. The present part III of a comprehensive study examined the movements of developing chicken embryos with the aim of identifying behavioral responses to a noxious stimulus. For this purpose, a noxious mechanical stimulus and a control stimulus were applied in a randomized order. The recorded movements of the embryos were evaluated using the markerless pose estimation software DeepLabCut and manual observations. After the application of the mechanical stimulus, a significant increase in beak movement was identified in 15- to 18-day-old embryos. In younger embryos, no behavioral changes related to the noxious stimulus were observed. The presented results indicate that noxious mechanical stimuli at the beak base evoke a nocifensive reaction in chicken embryos starting at embryonic day 15.

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The Impact of Early-Life Cecal Microbiota Transplantation on Social Stress and Injurious Behaviors in Egg-Laying Chickens

Fu,

Hu,

Zhang

et al. 2024

Microorganisms

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Injurious behaviors (i.e., aggressive pecking, feather pecking, and cannibalism) in laying hens are a critical issue facing the egg industry due to increased social stress and related health and welfare issues as well as economic losses. In humans, stress-induced dysbiosis increases gut permeability, releasing various neuroactive factors, causing neuroinflammation and related neuropsychiatric disorders via the microbiota–gut–brain axis, and consequently increasing the frequency and intensity of aggression and violent behaviors. Restoration of the imbalanced gut microbial composition has become a novel treatment strategy for mental illnesses, such as depression, anxiety, bipolar disorder, schizophrenia, impulsivity, and compulsivity. A similar function of modulating gut microbial composition following stress challenge may be present in egg-laying chickens. The avian cecum, as a multi-purpose organ, has the greatest bacterial biodiversity (bacterial diversity, richness, and species composition) along the gastrointestinal tract, with vitally important functions in maintaining physiological and behavioral homeostasis, especially during the periods of stress. To identify the effects of the gut microbiome on injurious behaviors in egg-laying chickens, we have designed and tested the effects of transferring cecal contents from two divergently selected inbred chicken lines on social stress and stress-related injurious behaviors in recipient chicks of a commercial layer strain. This article reports the outcomes from a multi-year study on the modification of gut microbiota composition to reduce injurious behaviors in egg-laying chickens. An important discovery of this corpus of experiments is that injurious behaviors in chickens can be reduced or inhibited through modifying the gut microbiota composition and brain serotonergic activities via the gut–brain axis, without donor-recipient genetic effects.

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Recognition and Assessment of Pain-Related Behaviors in Avian Species: An Integrative Review

Cited by 3 publications

References 124 publications

Nociception in chicken embryos, Part III: Analysis of movements before and after application of a noxious stimulus

Nociception in chicken embryos, Part III: Analysis of movements before and after application of a noxious stimulus

Nociception in Chicken Embryos, Part III: Analysis of Movements before and after Application of a Noxious Stimulus

The Impact of Early-Life Cecal Microbiota Transplantation on Social Stress and Injurious Behaviors in Egg-Laying Chickens

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