Welfare Assessment

Investigating welfare metrics for snakes at the Saint Louis zoo

Modern herpetoculture has seen a rise in welfare-related habitat modifications, although ethologically-informed enclosure design and evidence-based husbandry are lacking. The diversity that exists within snakes complicates standardizing snake welfare assessment tools and evaluation techniques. Utilizing behavioral indicators in conjunction with...

Year Published: 2022Topics: Welfare AssessmentAnimal Type: Reptile, Snake

Citation: Augustine, L., Baskir, E., Kozlowski, C. P. 2022. Investigating welfare metrics for snakes at the Saint Louis zoo. Animals 12(3), 373.

Computer vision for detection of body posture and behavior of red foxes

The behavior of animals is related to their health and welfare status. The latter plays a particular role in animal experiments, where continuous monitoring is essential for animal welfare. In this study, we focus on red foxes in an experimental...

Year Published: 2022Topics: Welfare AssessmentAnimal Type: Other Animal

Citation: Schütz, A. K., Krause, E. T., Fischer, M. et al. 2022. Computer vision for detection of body posture and behavior of red foxes. Animals 12(3), 233.

Pain assessment in horses using automatic facial expression recognition through deep learning-based modeling

The aim of this study was to develop and evaluate a machine vision algorithm to assess the pain level in horses, using an automatic computational classifier based on the Horse Grimace Scale (HGS) and trained by machine learning method. The...

Year Published: 2021Topics: Welfare AssessmentAnimal Type: Equine

Citation: Lencioni, G. C., de Sousa, R. V., de Souza Sardinha, E. J. et al. 2021. Pain assessment in horses using automatic facial expression recognition through deep learning-based modeling. PLOS ONE 16(10), e0258672.

Vocal correlates of arousal in bottlenose dolphins (Tursiops spp

Human-controlled regimes can entrain behavioural responses and may impact animal welfare. Therefore, understanding the influence of schedules on animal behaviour can be a valuable tool to improve welfare, however information on behaviour overnight and in the absence of husbandry staff...

Year Published: 2021Topics: Vocalization, Welfare AssessmentAnimal Type: Marine Mammal

Citation: Probert, R., Bastian, A., Elwen, S. H. et al. 2021. Vocal correlates of arousal in bottlenose dolphins (Tursiops spp.) in human care. PLOS ONE 16(9), e0250913.

Welfare assessment of adult laboratory zebrafish: A practical guide

Teleost fish such as Danio rerio (zebrafish) have been successfully used in biomedical research since decades. Genetically altered fish lines obtained by state-of-the-art genetic technologies are serving as well-known model organisms. In Europe, following Directive 2010/63/EU, generation, breeding, and husbandry...

Year Published: 2021Topics: Welfare AssessmentAnimal Type: Fish, Zebrafish

Citation: Sabrautzki, S., Miller, M., Kague, E. et al. 2021. Welfare assessment of adult laboratory zebrafish: A practical guide. Zebrafish 18(4), 282-292.

Assessing animal welfare: A triangulation of preference, judgement bias and other candidate welfare indicators

To assess the welfare of captive animals, validated measures, so-called ‘welfare indicators', are required. We used a triangulation approach to investigate the extent to which different measures converged to provide corroborating evidence of welfare. Laying hens were exposed to living...

Year Published: 2022Topics: Welfare AssessmentAnimal Type: Bird, Chicken

Citation: Paul, E. S., Browne, W., Mendl, M. T. et al. 2022. Assessing animal welfare: A triangulation of preference, judgement bias and other candidate welfare indicators. Animal Behaviour 186, 151-177.

Evaluation of an easy-to-use protocol for assessing behaviors of dogs retiring from commercial breeding kennels

Objective, reliable behavioral tests are needed to refine on-site welfare assessments of dogs housed at commercial breeding (CB) kennels and provide a basis to inform predictions of their behavior when retired from such kennels. This study tested the reliability, construct...

Year Published: 2021Topics: Relocation & Transport, Welfare AssessmentAnimal Type: Dog

Citation: Barnard, S., Flint, H., Shreyer, T. et al. 2021. Evaluation of an easy-to-use protocol for assessing behaviors of dogs retiring from commercial breeding kennels. PLOS ONE 16(8), e0255883.

Behavioral diversity as a potential positive indicator of animal welfare in bottlenose dolphins

Accredited zoological facilities are committed to fully understanding the behavioral, mental, and physical needs of each species to continuously improve the welfare of the animals under their professional care and detect when welfare has diminished. In order to accomplish this...

Year Published: 2021Topics: Natural Behavior, Welfare AssessmentAnimal Type: Marine Mammal

Citation: Miller, L. J., Lauderdale, L. K., Bryant, J. L. et al. 2021. Behavioral diversity as a potential positive indicator of animal welfare in bottlenose dolphins. PLOS ONE 16(8), e0253113.

Changes in tail posture detected by a 3D machine vision system are associated with injury from damaging behaviours and ill health on commercial pig farms

To establish whether pig tail posture is affected by injuries and ill health, a machine vision system using 3D cameras to measure tail angle was used. Camera data from 1692 pigs in 41 production batches of 42.4 (±16.6) days in...

Year Published: 2021Topics: Abnormal/Problematic Behavior, Welfare AssessmentAnimal Type: Pig

Citation: D'Eath, R. B., Foister, S., Jack, M. et al. 2021. Changes in tail posture detected by a 3D machine vision system are associated with injury from damaging behaviours and ill health on commercial pig farms. PLOS ONE 16(10), e0258895.

The use of artificial intelligence in assessing affective states in livestock

In order to promote the welfare of farm animals, there is a need to be able to recognize, register and monitor their affective states. Numerous studies show that just like humans, non-human animals are able to feel pain, fear and...

Year Published: 2021Topics: Emotion, Pain, & Sentience, Welfare AssessmentAnimal Type: Equine

Citation: Neethirajan, S. 2021. The use of artificial intelligence in assessing affective states in livestock. Frontiers in Veterinary Science 8, 715261.