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Changes of the hindgut microbiota due to high-starch diet can be associated with behavioral stress response in horses
The digestive system of horses is adapted to a high-fiber diet consumed in small amounts over a long time. However, during training, high-starch and low-fiber diets are usually fed which may induce hindgut microbial disturbances and intestinal pain. These diets can be described as alimentary stress. The aim of the present study was to investigate […]
Managing the Cayo Santiago rhesus macaque population: The role of density
Cayo Santiago is the oldest continuously operating free-ranging rhesus monkey colony in the world. Population control of this colony has historically been carried out by periodic live capture and removal of animals. However, the effect of such a strategy on the size, growth rate, age structure, and sex ratio of the population has not been […]
Development and application of a protocol to evaluate herd welfare in Dutch dairy farms
A protocol was developed and applied in a field survey to incorporate evaluation of herd welfare into the existing quality assurance program in Dutch dairy farming. Welfare was derived from the state of the biological needs of cows. Welfare targets and critical control points were selected according to HACCP principles, while restriction was to dairy […]
Maternal stress and plural breeding with communal care affect development of the endocrine stress response in a wild rodent
Maternal stress can significantly affect offspring fitness. In laboratory rodents, chronically stressed mothers provide poor maternal care, resulting in pups with hyperactive stress responses. These hyperactive stress responses are characterized by high glucocorticoid levels in response to stressors plus poor negative feedback, which can ultimately lead to decreased fitness. In degus (Octodon degus) and other […]
Are age and sex differences in brain oxytocin receptors related to maternal and infanticidal behavior in naïve mice?
This article is part of a Special Issue “Parental Care”. There is significant variability in the behavioral responses displayed by naïve young and adult mice when first exposed to pups. This variability has been associated with differences in the expression of oxytocin receptors (OXTRs) in the brain in several species. Experiment I investigated the behavioral […]
On-farm qualitative behaviour assessment in sheep: Repeated measurements across time, and association with physical indicators of flock health and welfare
Qualitative Behavioural Assessment (QBA) is a ‘whole-animal’ methodology that assesses the expressive qualities of animal behaviour using terms such as ‘tense’, ‘relaxed’, ‘anxious’, and ‘content’. The reliability and validity of QBA as an indicator for on-farm welfare assessment in pigs, cattle, poultry and sheep has been examined in a number of ways. However, the use […]
Behavioural, endocrine and cardiac autonomic responses to a model of startle in horses
Startle is a fast response elicited by sudden acoustic, tactile or visual stimuli in a variety of animal species and in humans. The magnitude of startle response can be modulated by external and internal variables and can be a useful tool to study the sensory-motor integration in animals. Different stimuli have been used to induce […]
Comparison of novel mechanical cervical dislocation and a modified captive bolt for on-farm killing of poultry on behavioural reflex responses and anatomical pathology
An alternative emergency method for killing poultry on-farm is required following European legislation changes (EU 1099/2009), which heavily restricts the use of manual cervical dislocation. This study investigated the kill efficacy of two mechanical methods that conform to the new legislation: (i) a novel mechanical cervical dislocation device; and (ii) a modified captive-bolt device (Rabbit […]
Inter-annual patterns of aggression and pair bonding in captive American flamingos (Phoenicopterus ruber)
Because zoos typically house animals for extended periods of time, longitudinal studies can play an important role in evaluating and optimizing animal care and management. For example, information on patterns of aggression and mating behavior across years can be used to monitor well-being, assess response to changes to group composition, and promote successful reproduction. Here, […]
The sucking behaviour and milk intake of one- to three-week-old triplet lambs during natural and competitive suckling situations
Within triplet litters, light-born lambs are at greater risk of dying than heavier lambs in the first week of life. However, the implications of within-litter differences in sucking behaviour for milk intake and growth beyond the first week are unclear. We hypothesized that within litter, triplets born lightest would still be lightest at one to […]