The effects of weaning at 7, 14 and 28 days on piglet behaviour
Contributor(s):: Worobec, E. K., Duncan, I. J. H., Widowski, T. M.
The effects of very early weaning on piglet behaviour were investigated. In order to determine the effects of weaning age on piglet behaviour, litters of piglets were randomly assigned to be weaned at 7, 14 and 28 days of age. In each of 3 trials, piglets from 3 litters were mixed into 2 pens of...
An evaluation of response to novelty as a predictor of pecking tendency in laying hens
Contributor(s):: Albentosa, M. J., Glen, E., Leeb, C., Whittaker, X., Nicol, C. J.
Selective breeding against feather pecking in laying hens depends on identification of individual birds with the lowest feather pecking activity. If certain behavioural traits are phenotypically and genetically associated with, or predictive of, feather pecking activity then tests for these...
Feeding motivation and stereotypies in pregnant sows fed increasing levels of fibre and/or food
Contributor(s):: Bergeron, R., Bolduc, J., Ramonet, Y., Meunier-Salaun, M. C., Robert, S.
Twenty-one multiparous sows were used in a Latin square design, from days 7 to 90 of gestation, to test the effect of fibre and feed levels on feeding motivation and feeding-related stereotypies. Treatments were: VHF (very high-fibre, 29% ADF, 50% NDF, 4.5 kg/day); HF (high-fibre, 23% ADF, 43%...
Behavioural and physiological responses to an acute stressor in crib-biting and control horses
Contributor(s):: Bachmann, I., Bernasconi, P., Herrmann, R., Weishaupt, M. A., Stauffacher, M.
The responses of eleven pairs of crib-biting and non-crib-biting horses (controls) to an arousal-inducing stimulus were studied. Video-observation of the horses revealed that crib-biting horses spent between 10.4 and 64.7% of their stabling time performing the stereotypy. During the first 2 days...
Buller steer syndrome review
Contributor(s):: Blackshaw, J. K., Blackshaw, A. W., McGlone, J. J.
The effect of a fixed or free toy on the growth rate and aggressive behaviour of weaned pigs and the influence of hierarchy on initial investigation of the toys
Contributor(s):: Blackshaw, J. K., Thomas, F. J., Lee, J.
Thirty two groups (12 pigs per group; 14 groups all female, 16 groups all male, 2 groups mixed) of 4- to 5-week old Large WhitexLandracexDuroc weaners were randomly assigned to 1 of 4 treatments (eight groups per treatment): (1) control group with no toys; (2) fixed toy only, hanging from the...
Factors affecting pica in the domestic cat
Contributor(s):: Bradshaw, J. W. S., Neville, P. F., Sawyer, D.
A postal survey was conducted of the owners of 152 cats, mainly of oriental breeds, which exhibited pica (defined broadly, as chewing, sucking or ingesting non-nutritive materials). The most common material was wool (93% of cases), followed by cotton, man-made fabrics, rubber/plastic and...
Dietary tryptophan supplementation in privately owned mildly anxious dogs
Contributor(s):: Bosch, G., Beerda, B., Beynen, A. C., van der Borg, J. A. M., van der Poel, A. F. B., Hendriks, W. H.
Food composition has been reported to influence mood and behaviour in humans and animals and it could help to reduce unwanted behaviour in dogs. Anxiety-related behaviour is associated with the functioning of the central serotonergic system and here it was investigated if dietary supplementation...
Canine dominance-associated aggression: concepts, incidence, and treatment in a private behavior practice
Contributor(s):: Cameron, D. B.
A review of 35 dominance-associated aggression (DA) cases presented to a small, private, behaviour-only veterinary practice revealed that attention addiction was the most commonly associated (66
A behavioural comparison of New Zealand White rabbits ( Oryctolagus cuniculus ) housed individually or in pairs in conventional laboratory cages
Contributor(s):: Chu, L. R., Garner, J. P., Mench, J. A.
Despite their gregarious nature, rabbits used for research are often housed individually due to concerns about aggression and disease transmission. However, conventional laboratory cages restrict movement, and rabbits housed singly in these cages often perform abnormal behaviours, an indication...
Measuring aggressiveness in growing pigs in a resident-intruder situation
Contributor(s):: Erhard, H. W., Mendl, M.
218 pigs of both sexes from 23 litters aged 7 or 11 weeks were used to examine aggressiveness in growing pigs. Individual pigs were isolated in one half of their home pen and an intruder pig was introduced. This pig was 2 to 3 weeks younger than the resident pig. The time from the first contact...
A note on aggression and cannibalism in laying hens following re-housing and re-grouping
Contributor(s):: Cloutier, S., Newberry, R. C.
The effects of being moved and mixed with strangers on the incidence of aggression and cannibalism in caged White Leghorn hens with intact beaks were examined. It was predicted that mixing of strangers would increase rates of aggression and cannibalism. Hens were reared in 16 stable groups of...
The effect of increasing visual horizons on stereotypic weaving: implications for the social housing of stabled horses
Contributor(s):: Cooper, J. J., McDonald, L., Mills, D. S.
Stabled horses commonly perform stereotypic patterns of weaving, where the horse shifts its weight from side to side often swinging its head. Ten warm-blood types, of which five were known to reliably weave, were housed in similar 12 x 12 ft wooden loose boxes in a single stable block surrounding...
Oral/nasal/facial and other behaviors of sows kept individually outdoors on pasture, soil or indoors in gestation crates
Contributor(s):: Dailey, J. W., McGlone, J. J.
PIC Camborough-15 sows were housed either on pasture (n=8), on soil (n=8) or in gestation crates (n=16). All were fed 2.0 kg of fortified sorghum-soybean diet each day in pellet form, except half of the crated sows which were fed meal. The occurrences of standing, lying, sitting, feeding,...
Urine spraying in cats: presence of concurrent disease and effects of a pheromone treatment
Contributor(s):: Frank, D. F., Erb, H. N., Houpt, K. A.
34 spraying cats, belonging to 24 households, had a complete physical examination, complete blood count (CBC), blood biochemistry panel, urinalysis, urine culture, urine cortisol:creatinine analysis and abdominal radiographs. Diagnostic procedures revealed some abnormalities and/or crystalluria...
Behavior of picketed circus elephants
Contributor(s):: Friend, T. H.
The behaviour of 14 female Asian (Elephas maximus) and 3 female African (Loxodonta africana) elephants who performed 2 shows each day with a circus that travelled to a new location (40 to 250 km from the previous day's lot) daily, was studied. When not performing or working, the elephants were...
The role of gonadal hormones in the occurrence of objectionable behaviours in dogs and cats
Contributor(s):: Hart, B. L., Eckstein, R. A.
This paper reviews laboratory studies and surveys of pet owners whose pets were castrated or spayed. The role of the placebo effect in the latter source of information is unknown. The information indicates that: (1) it is the sexually dimorphic behavioural patterns that are reduced or eliminated...
A behavioural study of scrapie-affected sheep
Contributor(s):: Healy, A. M., Hanlon, A. J., Weavers, E., Collins, J. D., Doherty, M. L.
The behaviour of 12 sheep, suspected of having scrapie, and 12 clinically normal animals from the Irish Republic was observed over a 6-day period [date not given]. Confirmation of the true disease status of the animals was made at postmortem using both histopathological and immunocytochemical...
Comparison of dogs' reactions to four different head collars
Contributor(s):: Haug, L. I., Beaver, B. V., Longnecker, M. T.
Head collars are widely used in canine behaviour modification programmes. Owner compliance is crucial for success and depends in part on the dog's acceptance of the product. The responses of 12 dogs to 4 different head collars were compared in a crossover design over four 10 min sessions each...
Housing conditions and behavioural problems of indoor cats as assessed by their owners
Contributor(s):: Heidenberger, E.
Housing conditions and behavioural problems of a sample of 1177 cats were described by their 550 owners. Indications for inadequate housing in the light of species-specific needs were analysed. 65.1% of the cats were Domestic European Shorthairs and 78.7% were castrated animals. 87% of the...