Animal category: Equines

Douleurs animales. 1. Les mécanismes

Paulmier V., Faure M., Durand D., Boissy A., Cognié J., Eschalier A., Terlouw C.

Published in 2015

This article aims to bring together in a single document the knowledge acquired over recent years on the mechanisms of the appearance and modulation of pain in animals. The review is divided into three parts. The first describes the different stages of development, transmission and integration of the nociceptive messages involved in the onset of pain (sensory and emotional components). The second describes the different types of modulation that can activate or inhibit the transmission of nociceptive messages. The third describes the different neurophysiological processes that accompany pain and can modulate it (inflammation, activation of the autonomic nervous system and the neuroendocrine system).

Document Types: Scientific review

Animal categories: Bovines, Caprines, Equines, Mammals, Monogastrics, Ovines, Fish, Porcines, Rodents, Ruminants, Poultry

Keywords: Adaptation of the animal to the environment, Adaptation of the environment to the animal, Animal-based measurements, Pain, Experimentation, Welfare indicators, Brain integration, Mutilation, Cognitive processes, Stress

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Emotional regulation in livestock: focus on neurobiological actors

Menant O., Destrez A., Deiss V., Boissy A., Delagrange P., Calandreau L., Chaillou E.

Published in 2016

In order to achieve the objective evaluation of emotions in farm animals, the Agri-Bien-Être Animal network (an interdisciplinary group created by INRA in 1998, www6.inra.fr/agri_bien_etre_animal) has proposed experimental strategies based on cognitive evaluation theory in human psychology (Boissy et al 2007, Box 1). According to this conceptual framework, emotions are generated by the cognitive evaluation of a situation confronting the animal. Although the characterisation of these situations is complex (Forkman et al 2007), it is suggested that the animal would evaluate them using basic criteria for relevance (suddenness, novelty, etc) and involvement (predictability, etc), the degree to which they correspond to  expectations, and according to its own adaptive capacities (controllability of the situation). At the end of this evaluation phase, the emotion felt by the animal is translated into emotional expression. It is the latter that can be assessed by the objective measurement of behavioural and physiological emotional responses (Box 2). By applying this conceptual framework to research in the neurobiology of emotions, the representation of the neural circuit of emotions can be built around those structures involved in the perception of the environment, information processing and the expression of emotional responses (Figure 1). From an experimental point of view, this theoretical framework requires the characterisation and standardisation of situations likely to serve as a trigger and the characterisation of the emotional responses expressed by individual animals in relation to the neurobiological actors studied.

Document Types: Scientific review

Animal categories: Bovines, Caprines, Equines, Monogastrics, Ovines, Porcines, Ruminants, Poultry

Keywords: Anxiety, Experimentation, Brain integration, Memory, Neurogenesis, Fear, Stress

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A critical review of fear tests used on cattle, pigs, sheep, poultry and horses

Forkman B., Boissy A., Meunier-Salaün M-C., Canali E., Jones R.B.

Published in 2007

Fear is probably the most-studied emotion in pets. In this overview, we attempt to establish the levels of repeatability and validity for fear tests carried out on cattle, pigs, sheep and goats, poultry and horses. We focus our review on the three most common types of fear tests: the arena test (open field), the novel object test and the stress test. For some tests, e.g. tonic immobility in poultry, there is a good body of literature on the factors affecting test results, test validity and age dependency. However, there are relatively few such well-defined and validated tests, and the element that is particularly lacking for most tests is information on robustness, i.e. what aspects can be modified without affecting the validity of the tests. The relative lack of standardised tests is an obstacle to the development of applied ethology as a science.

Document Types: Scientific review

Animal categories: Bovines, Caprines, Equines, Monogastrics, Ovines, Porcines, Ruminants, Poultry

Keywords: Adaptation of the animal to the environment, Animal-based measurements, Anxiety, Experimentation, Welfare indicators, Memory, Fear, Cognitive processes, Stress, Vocalisation

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La Conscience des Animaux

Pierre Le Neindre, Muriel Dunier, Alain Boissy, Emilie Bernard, Xavier Boivin, Ludovic Calandreau, Nicolas Delon, Bertrand Deputte, Sonia Desmoulin-Canselier, Nathan Faivre, Martin Giurfa, Jean-Luc Guichet, Léa Lansade, Raphaël Larrère, Pierre Mormède, Patrick Prunet, Benoist Schaal, Jacques Servière, Claudia Terlouw

Published in 2018

Are animals conscious beings?  How do they perceive their own worlds? These questions are being debated in the scientific community for both academic and practical reasons. Accordingly, on 7 July 2012, a group of leading scientists in England headed by Philip Low felt it necessary to publish The Cambridge Declaration on Consciousness. This manifesto states that "a convergence of evidence indicates that non-human animals have the neuro-anatomical, neurochemical and neurophysiological substrates of conscious states as well as the ability to express intentional behaviour...". It calls for further research to learn more about this capacity in animals. In 2015, INRA carried out a multidisciplinary scientific expertise in order to provide a critical review of the literature on animal consciousness. This work was executed at the request of the European Food Safety Authority (request EFSA-Q-2015-00390, contract no. EFSA/Inra/2015/01).

This study is an overview based on the report from INRA's collective scientific expertise (Le Neindre et al., 2017). It is divided into six chapters:
––the social, ethical and legal context for the expertise (chapter 1)
––consciousness in the animal kingdom: historical perspectives, epistemology and definitions (chap. 2)
––overview of current knowledge on human consciousness, with a discussion of the main current innovative concepts given their usefulness for our understanding of the available data on animals (Chapter 3)
––behavioural and neurobiological components in animals that allow us to talk about more or less elaborate content of consciousness. This chapter constitutes the core of the expertise (chap. 4).
––the positive consequences of taking consciousness into account on our understanding of welfare, suffering and pain (chap. 5)
––the importance of consciousness in the adaptive capacities of animals, especially in their phylogenetic components (Chapter 6)
The book concludes with proposals for future avenues of research resulting from the deliberations of various scientific bodies.

Document Types: Scientific work

Animal categories: Bovines, Canines, Caprines, Equines, Mammals, Monogastrics, Birds (except poultry), Ovines, Fish, Porcines, Primates, Reptiles, Rodents, Ruminants, Poultry

Keywords: Adaptation of the animal to the environment, Anxiety, Learning, Training, Consciousness, Pain, Societal issues, Enrichment, Brain integration, Metacognition, Cognitive processes, Evolutionary processes, Stress

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Douleurs Animales en Elevage

P. Le Neindre, D. Baldin, S. Desmoulin, R. Guattéo, D. Guéméné, JL. Guichet, R. Larrère, K. Latouche, C. Leterrier, O. Levionnois, P. Mormede, L. Mounier, J. Porcher, P. Prunet, A. Prunier, A. Serrie, J. Servière, C. Terlouw, PL. Toutain, N. Vialles

Published in 2013

There is growing public sensitivity to animal pain across a variety of human activities: animal experimentation, pet cruelty, live performances such as in circuses, and the rearing of animals for human consumption. This situation gives rise to a sometimes difficult dialogue between animal rights campaigners who refuse to accept any exploitation of animals, those who advocate improvements to the living conditions of animals, and businesses who point out the financial constraints within their sectors. The contents of this expertise are intended to inform public decision-making and, beyond this, to provide a robust reference framework to argue positions and decisions in the public debate, and to identify the needs of research in this field in order to better respond to the questions raised.

Document Types: Scientific work

Animal categories: Bovines, Caprines, Equines, Mammals, Monogastrics, Ovines, Fish, Porcines, Ruminants, Poultry

Keywords: Adaptation of the animal to the environment,  Adaptation of the environment to the animal, Animal-based measurements, Pain, Precision farming, Experimentation, Force-feeding, Welfare indicators, Brain integration, Mutilation, Cognitive processes, Stress

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