Individuals within a population may vary considerably in the way they exploit available food resources. If the sexes differ in the size of their feeding apparatus, there can be differences in foraging behaviour and habitat use, hence one sex may be more susceptible to competition. We examined relationships between sexual dimorphism in bill size and foraging behaviour, and habitat and microhabit...

There is limited information on Irrawaddy dolphins (Orcaella brevirostris) in the Bay of Brunei, Brunei Darussalam. This research was carried out from 2016 to 2018 determine water surface behaviour bay, relationship between and abiotic factors number individuals displaying behaviour. Behavioural categories, i.e., feeding, socializing, travelling groups or individually, parameters were documente...

Some parasites alter the behaviour of their hosts. The larvae of the parasitic wasp Cotesia congregata develop within the body of the caterpillar Manduca sexta During the initial phase of wasp development, the host's behaviour remains unchanged. However, once the wasps begin to scrape their way out of the caterpillar, the caterpillar host stops feeding and moving spontaneously. We found that th...

Abstract Providing good animal welfare standards is very important for wild animals in captivity, especially zoos. Therefore, the aim of this study was to perform a assessment elephants Skopje Zoo using species-specific protocols. Two specific protocols were used and combined more unified approach. These focused on elephant’s day-time behaviour, including Qualitative Behaviour Assessment (QBA),...

Breeding for behavioural traits may improve pig welfare and breeding high production decrease welfare. Maternal behaviours important piglet includes savaging, crushing nursing. Behaviours of importance pigs slaughter feeding behaviour, tail biting aggressive behaviour. These are complex large amounts data needed accurate genetic evaluation selection.

The topography of the neurons in the retinal ganglion cell layer of juvenile black bream Acanthopagrus butcheri changes during development. The region of high cell density the area centralis (AC), relocates from a temporal (central) to a dorsal (peripheral) position within the dorso-temporal retinal quadrant. To ascertain whether the differences in the position of the AC during development are ...

The nuclear receptor REV-ERBα is part of the molecular clock mechanism and is considered to be involved in a variety of biological processes within metabolically active peripheral tissues as well. To investigate whether Rev-erbα (also known as Nr1d1) in the brain plays a role in the daily variations of energy metabolism, feeding behaviour and the sleep-wake cycle, we studied mice with global (G...

The neuropeptide relaxin-3 and its cognate G-protein-coupled receptor, RXFP3, have been implicated in the control of feeding behaviour in rats. For example, relaxin-3-positive projections and RXFP3 are present within hypothalamic feeding circuits, and icv injection of human relaxin-3 (-0.2 to 1.0 nmol) robustly increases feeding behaviour in satiated rats. To explore whether this action is cons...

1. The aim was to test whether provision of foraging material and food form influence feather pecking and feather damage in laying hens. 2. From week 19 of age, 16 groups of 11 hens (white Lohman Selected Leghorn hybrids) were kept in pens with or without access to long-cut straw as foraging material and fed on either mash or pellets. 3. Foraging behaviour was increased in hens with access to s...

Cribbing is an oral stereotypy, tends to develop in captive animals as a means to cope with stress, and may be indicative of reduced welfare. Highly energetic diets ingested in a short time are one of the most relevant risk factors for the development of cribbing. The aim of this study was to verify whether feeding cribbing horses through a dispenser that delivers small quantities of concentrat...