Publications

Non-invasive assessment of mild stress-induced hyperthermia by infrared thermography in laboratory mice

Stress-induced hyperthermia (SIH) is a physiological response to acute stressors in mammals, shown as an increase in core body temperature, with redirection of blood flow from the periphery to vital organs. Typical temperature assessment methods for rodents are invasive and...

Year Published: 2022Topics: Biological Sampling & Physiological MeasurementAnimal Type: Mouse, Rodent

Citation: Blenkuš, U., Gerós, A. F., Carpinteiro, C. et al. 2022. Non-invasive assessment of mild stress-induced hyperthermia by infrared thermography in laboratory mice. Animals 12(2), 177.

Use of blood lactate in assessment of manual capture techniques of zoo-housed crocodilians

Species-specific welfare indicators are important in promoting positive welfare for zoo animals. Reptiles are a notoriously understudied group in regards to behavior, welfare needs, and husbandry requirements. Using opportunistically obtained samples, we evaluated how blood lactate is affected by variation...

Year Published: 2022Topics: Handling, RestraintAnimal Type: Crocodile & Alligator, Reptile

Citation: Molinaro, H. G., Anderson, G. S., Gruny, L. et al. 2022. Use of blood lactate in assessment of manual capture techniques of zoo-housed crocodilians. Animals 12(3), 397.

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.

Environmental complexity: Additional human visual contact reduced meat chickens’ fear of humans and physical items altered pecking behavior

Increased environmental complexity can improve animal welfare, depending on the resources provided and use by the animal. We provided chickens either with physical items that posed no biosecurity risk and were inexpensive (balls, chains, perches and rope) (P; n =...

Year Published: 2022Topics: Environmental Enrichment, Human-Animal InteractionAnimal Type: Bird, Chicken

Citation: Taylor, P. S., Hemsworth, P. H., Rault, J.-L. 2022. Environmental complexity: Additional human visual contact reduced meat chickens' fear of humans and physical items altered pecking behavior. Animals 12(3), 310.

Rehabilitation of marine turtles and welfare improvement by application of environmental enrichment strategies

Sea turtles perform various ecological services in several marine environments and are considered architects of the marine landscape. At present, they are endangered species due to anthropogenic threats, pollution and degradation of marine habitats. These impacts make it urgent to...

Year Published: 2022Topics: Environmental EnrichmentAnimal Type: Reptile, Turtle & Tortoise

Citation: Escobedo-Bonilla, C. M., Quiros-Rojas, N. M., Rudín-Salazar, E. 2022. Rehabilitation of marine turtles and welfare improvement by application of environmental enrichment strategies. Animals 12(3), 282.

Impacts of rearing enrichments on pullets’ and free-range hens’ positive behaviors across the flock cycle

Enrichment during the indoor rearing of pullets destined for free-range systems may optimize pullet development including increasing motivated natural behaviors (termed ‘positive behaviors') including foraging, dust bathing and chick play. Hy-Line Brown® chicks (n = 1700) were floor-reared indoors across...

Year Published: 2022Topics: Environmental EnrichmentAnimal Type: Bird, Chicken

Citation: Campbell, D. L. M., Belson, S., Dyall, T. R. et al. 2022. Impacts of rearing enrichments on pullets' and free-range hens' positive behaviors across the flock cycle. Animals 12(3), 280.

Out of sight, out of mind or just something in the way? Visual barriers do not reduce intraspecific agonism in an all-male group of Nile crocodiles (Crocodylus niloticus)

Here, we evaluated if visual barriers could reduce intraspecific agonism in an all-male group of Nile crocodiles (Crocodylus niloticus) living in a zoo. Crocodiles were monitored for nearly 100 h, and four “hotspots” of aggression within their exhibit were identified....

Year Published: 2022Topics: Housing, Social Housing & CompanionshipAnimal Type: Crocodile & Alligator, Reptile

Citation: Leeds, A., Riley, A., Terry, M. et al. 2022. Out of sight, out of mind or just something in the way? Visual barriers do not reduce intraspecific agonism in an all-male group of Nile crocodiles (Crocodylus niloticus). Animals 12(3), 269.

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.

The effect of environmental enrichment on laboratory rare minnows (Gobiocypris rarus): Growth, physiology, and behavior

Environmental enrichment is a method to increase environmental heterogeneity, which may reduce stress and improve animal welfare. Previous studies have shown that environmental enrichment can increase the growth rate, decrease aggressive and anxiety-like behaviors, improve learning ability and agility, and...

Year Published: 2022Topics: Environmental EnrichmentAnimal Type: Fish, Other Fish

Citation: Xu, C., Hou, M., Su, L. et al. 2022. The effect of environmental enrichment on laboratory rare minnows (Gobiocypris rarus): Growth, physiology, and behavior. Animals 12(4), 514.

The animal-human interface in farm animal production: Animal fear, stress, reproduction and welfare

A negative human-animal relationship (HAR) from the perspective of the animal is a limiting factor affecting farm animal welfare, as well as farm animal productivity. Research in farm animals has elucidated sequential relationships between stockperson attitudes, stockperson behaviour, farm animal...

Year Published: 2022Topics: Human-Animal InteractionAnimal Type: Cattle, Chicken, Equine, Fowl, Goat, Pig, Sheep

Citation: Acharya, R. Y., Hemsworth, P. H., Coleman, G. J. et al. 2022. The animal-human interface in farm animal production: Animal fear, stress, reproduction and welfare. Animals 12(4), 487.