Subject: Cognition

Exploration of skin redness and immunoglobulin A as markers of the affective states of hens

Delphine Soulet, Anissa Jahoui, Rodrigo Guabiraba, Léa Lansade, Marie-Claire Blache, Benoît Piégu, Gaëlle Lefort, Vanaique Guillory, Pascale Quéré, Karine Germain, Frédéric Lévy, Scott A. Love, Aline Bertin, Cécile Arnould

Published in 2024

Scientific article reporting that hens display increased redness of the facial skin in situations eliciting positive or negative affective states, with high-intensity negative situations resulting in the highest degree of redness. Meanwhile, situations could produce minor changes in immunoglobulin A concentrations. The authors conclude that changes in facial skin redness do indeed reflect variations in the hens' affective states and can be used as a marker when assessing the quality of the human-hen relationship.

Document Types: Scientific paper

Animal categories: Poultry

Keywords:Animal-based measurements, Fear, Human-animal relationships, Welfare indicators

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Catcalls: exotic cats discriminate the voices of familiar caregivers

Crews T, Vonk J, McGuire M.

Published in 2024

Scientific study on whether undomesticated Felidae species recognize familiar human voices by exposing them to audio playbacks of familiar and unfamiliar humans using the cats' names and measuring the latency, intensity and duration of the cats' responses. The results suggest that close human contact rather than domestication is associated with the ability to distinguish between human voices, and that less social species may have socio-cognitive abilities similar to those of more gregarious species.

Document Types: Scientific paper

Animal categories: Felines

Keywords:Animal-based measurements, Human-animal relationships, Socialization, Vocalisation

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Fowl language: AI is learning to analyze chicken communications to help us understand what all the clucking's about

Suresh Neethirajan

Published in 2024

Popular science article on the benefits of an AI tool to interpret the complex vocal linguistic system used by chickens. Combined with an analysis of non-vocal cues, the tool would make it possible to understand the birds' emotional states. This interpretation of different chicken vocalizations could lead to improved farming practices and a change in how we view our relationship with animals.

Document Types: Scientific paper

Animal categories: Poultry

Keywords:Animal-based measurements, Precision farming, Human-animal relationships, Vocalisation

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Air bubble curtain improves the welfare of captive rainbow trout fry and fingerlings

Océane Amichaud, Thomas Lafond, Georgina Lea Fazekas, Aude Kleiber, Thierry Kerneis, Axel Batard, Lionel Goardon, Laurent Labbé, Sophie Lambert, Sylvain Milla, Violaine Colson

Published in 2024

Scientific article showing that the repeated diffusion of bubbles in a tank improved the welfare of rainbow trout. The short-term (~7 weeks) and long-term (~21 weeks) enrichment effects were similar to those observed with more conventional environmental enrichment (provision of plants and shelter). The fish were less aggressive, less fearful and showed enhanced learning abilities.

Document Types: Scientific paper

Animal categories: Fish

Keywords: Animal-based measurements, Adaptation of the environment to the animal, Learning, training, Enrichment, Wefare indicators, Housing, Living environment, Behavioural disorders, Stress

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Training of transport drivers improves their handling of pigs during loading for transport to slaughter

S. Wilhelmsson, P.H. Hemsworth, M. Andersson, J. Yngvesson, L. Hemsworth, J. Hultgren

Published in 2024

Scientific article showing the positive impact of cognitive-behavioral training on the behavior and beliefs of lorry drivers working in livestock transport (pigs).

Document Types: Scientific paper

Animal categories: Porcines

Keywords:Animal trade, Education, Human-animal relationships, Transport

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The links between positive human interaction and maternal behaviour and welfare of commercial breeding dams (Canis familiaris)

Uri Baqueiro-Espinosa, Paul Donnelly, Victoria McEvoy, Gareth Arnott

Published in 2024

Scientific article showing the positive effect of social enrichment (positive human-animal interactions) during gestation on a bitch's maternal behavior and on stress as measured by capillary cortisol levels.

Document Types: Scientific paper

Animal categories:Canine

Keywords:Adaptation of the animal to the environment, Enrichment, Lactation, Maternity, Prenatal issues, Human-animal relationships, Socialization, Stress

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Providing elevated structures in the pullet rearing environment affects behavior during initial acclimation to a layer aviary

Allison N. Pullin, Christina B. Rufener, Suzanne T. Millman, John F. Tarlton, Michael J. Toscan

Published in 2024

Scientific article reporting that hens with access to elevated platforms during the rearing phase make better use of the space in laying aviaries when they are first transferred there than those reared on the ground. The latter acclimatize within 1-2 weeks, but continue to make little use of the highest level of the aviary.

Document Types: Scientific paper

Animal categories: Poultry

Keywords:Adaptation of the environment to the animal, Enrichment, Housing, Livestock buildings

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Cognitive tasks as measures of pig welfare: a systematic review

Thomas Ede, Thomas D. Parsons

Published in 2023

Systematic review of the literature to assess the frequency of use and variety in cognitive approaches to the assessment of pig welfare. To this end, it quantifies the different cognitive tasks used and welfare interventions studied in the selected articles, and assesses the frequency with which cognitive task results are in line with treatment effects.

Document Types: Scientific review

Animal categories: Porcines

Keywords:Animal-based measurements, Human-animal relationships, Welfare indicators

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What are farm animals thinking?

David Grimm

Published in 2023

Article summarizing recent research on the mental faculties of cattle, sheep, goats and pigs, describing the importance of this work   in better addressing the needs of the above species, and explaining why it had not previously been  arried out.

Document Types: Scientific paper

Category of animals: Bovines, Caprines, Ovines, Porcines

Keywords:Consciousness, Memory, Metacognition, Personality, Cognitive processes, Human-animal relationships

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Comment les volailles perçoivent et interprètent leur environnement : recherche scientifique et exemples d’application

Rachel Degrande, Vitor Hugo Bessa Ferreira, Vanessa Guesdon, Ludovic Calandreau

Published in 2023

Scientific review emphasising that poultry have varied and well-developed senses, that they interact with each other, that they are capable of learning, and that they have  a much wider repertoire of cognitive skills than is often assumed.

Document Types: Scientific review

Animal categories: Poultry

Keywords:Adaptation of the animal to the environment, Animal-based measurements, Learning, training, Enrichment, Memory, Living environment, Cognitive processes

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