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  1. Genetic analysis of reactivity to humans in Goettingen minipigs

    Contributor(s):: Kohn, F., Sharifi, A. R., Simianer, H.

    Goettingen minipigs are laboratory animals with an increasing demand over the last few years. At the moment, Goettingen minipigs are not selected for a low reactivity to humans and this trait is not included in the breeding programme. However, it is obvious that there is a need for genetically...

  2. Increased reproductive output in stereotypic captive Rhabdomys females: potential implications for captive breeding

    Contributor(s):: Jones, M. A., Lierop, M. van, Mason, G., Pillay, N.

    Captive animal populations can diverge considerably from populations in the wild, despite the animals not being deliberately domesticated. If the phenotypes which are of benefit in captivity are heritable, the genotypes of captive-stock can diverge swiftly and substantially from wild-stock. Using...

  3. Indication of a genetic basis of stereotypies in laboratory-bred bank voles ( Clethrionomys glareolus )

    Contributor(s):: Schoenecker, B., Heller, K. E.

    The development of stereotypies was studied in 2 successive laboratory-bred generations of bank voles representing F1 (n=248) and F2 (n=270) of an originally wild caught stock. It was shown that the propensity to develop stereotypies under barren housing conditions strongly relates to the same...

  4. Influence of maternal experience on fear reactions in ewes

    Contributor(s):: Vierin, M., Bouissou, M. F.

    The effects of maternal experience on fearfulness were assessed in ewes by comparing fear reactions of nulliparous (21 months old; N=19), primiparous (21 months old, one lamb reared; N=27) and multiparous (mean age: 4.5+or-1.2 years; one to four litters reared; N=17) Ile-de-France ewes. All ewes...

  5. Influence of mothering on emotional and social reactivity of domestic pullets

    Contributor(s):: Perre, Y., Wauters, A. M., Richard-Yris, M. A.

    The aim of this study was to determine whether different early mothering experiences influenced emotional and social reactivity of sub-adults and adults in domestic fowl. We compared two types of individuals: brooded and non-brooded pullets. Brooded pullets were reared by a maternal hen during...

  6. Investigations on genetic disease resistance in swine - a contribution to the reduction of pain, suffering and damage in farm animals. (Special Issue: Animal suffering and welfare.)

    Contributor(s):: Reiner, G.

    This review deals with genetic disease resistance in pigs as a prospective opportunity to reduce pain, suffering and damage in swine production. Even under favourable terms of housing and management, infectious diseases are wide-spread, and have to be ranked among the major sources for suffering...

  7. Mother-offspring bonding in farmed red deer: accuracy of visual observation verified by DNA analysis

    Contributor(s):: Vankova, D., Bartos, L., Cizova-Schroffelova, D., Nespor, F., Jandurova, O.

    The accuracy of a maternity assessment based on visual observation was tested during the post parturient phase in farmed red deer in Czech Republic [date not given]. The mother of the calf was determined using visual observation of the hind's peri-parturient and early maternal behaviour during...

  8. Stereotypic behaviour is genetically transmitted in the African striped mouse Rhabdomys pumilio

    Contributor(s):: Schwaibold, U., Pillay, N.

    The development of stereotypic behaviour was studied in captive striped mice, Rhabdomys pumilio. Based on the findings of previous studies, it was hypothesized that there is a genetic basis of stereotypy in striped mice. Breeding and cross-fostering experiments were used to test this hypothesis....

  9. T-maze behaviour in broiler chicks is not sensitive to right-left preferences, test order or time-of-day

    Contributor(s):: Marin, R. H., Jones, R. B.

    240 newly hatched, mixed-sex broiler chicks were randomly allocated to 12 groups of 20. At 2 days of age, a group of 20 chicks was placed in the brood area of each of 2 T-mazes at 08:30 h; the brood areas were positioned on either side of maze. After acclimatization, one chick from each group was...

  10. The influence of rearing on personality ratings of captive chimpanzees ( Pan troglodytes ). (Special issue: Primates in zoos)

    Contributor(s):: Martin, J. E.

    Personality traits of 43 captive chimpanzees (Pan troglodytes) at five zoos in the United Kingdom were assessed. Chimpanzees were categorized into one of three rearing conditions: mother-group-reared (MGR), reared with others but separated from mother (RO), and reared alone for a period of time...

  11. The presence of the dam during handling prevents the socialization of young calves to humans

    Contributor(s):: Krohn, C. C., Boivin, X., Jago, J. G.

    The effect of handling and hand-feeding of calves with or without their dams present on the calves' subsequent response to humans was investigated using 5 groups of 10 Danish Friesian calves, each of which received a different treatment. The treatments were: calf separated from its dam...

  12. The use of a behaviour test for selection of dogs for service and breeding. II. Heritability for tested parameters and effect of selection based on service dog characteristics

    Contributor(s):: Wilsson, E., Sundgren, P. E.

    1002 German shepherds and 467 Labrador retrievers, bred by the Swedish Dog Training Centre (SDTC) during 1983-91, and 308 German shepherds and 330 Labrador retrievers, from private breeders, were subjectively scored on behavioural traits. The score for each trait were pooled to give an index...

  13. Breed and maternal effects on the intake of tannin-rich browse by juvenile domestic goats ( Capra hircus )

    Contributor(s):: Glasser, T. A., Ungar, E. D., Landau, S. Y., Perevolotsky, A., Muklada, H., Walker, J. W.

    Goat breeds differ in their consumption of tannin-rich browse, but the relative contributions of genetics and learning to these differences is unclear. The objective of this study was to differentiate between the effects of breed (nature) and rearing environment (nurture) on consumption of a...

  14. Breed differences in canine aggression

    Contributor(s):: Duffy, D. L., Hsu, Y. Y., Serpell, J. A.

    Canine aggression poses serious public health and animal welfare concerns. Most of what is understood about breed differences in aggression comes from reports based on bite statistics, behaviour clinic caseloads, and experts' opinions. Information on breed-specific aggressiveness derived from...

  15. Domestication - from behaviour to genes and back again

    Contributor(s):: Jensen, P.

    During domestication, animals have adapted with respect to behaviour and an array of other traits. This tends to give rise to a specific domestication phenotype, involving similar changes in colour, size, physiology and behaviour among different species. Hence, domestication offers a model for...

  16. Domestication effects on foraging strategies in pigs ( Sus scrofa )

    Contributor(s):: Gustafsson, M., Jensen, P., Jonge, F. H. de, Schuurman, T.

    Eight domestic pigs and 8 crossbred pigs (Holland Landrace x wild boar) were allowed to forage alone in a maze for 30 min on 4 successive days. The maze contained 6 gradually depleting food patches and corridors between them. Pigs obtained the food by manipulating the bucket with the snouts. On...

  17. Effects of origin, experiences early in life, and genetics on bitterweed Hymenoxys odorata consumption by sheep

    Contributor(s):: Frost, R. A., Scott, C. B., Walker, J. W., Hartmann, F. S.

    Bitterweed is one of the most detrimental poisonous plants to sheep production in west central Texas. Sheep typically avoid the plant unless alternative forage is limited. When consumption does occur, some flocks and individuals are able to consume bitterweed and avoid toxicosis. Our objective...

  18. Genetics and genomics of animal behaviour and welfare - challenges and possibilities. (Special Issue: Farm animal welfare since the Brambell report.)

    Contributor(s):: Jensen, P., Buitenhuis, B., Kjaer, J., Zanella, A., Mormede, P., Pizzari, T.

    Traditionally, the contribution of applied ethology to animal welfare science has concentrated on understanding the reactions of animals to their housing conditions. Domestication has had small effects on fundamental aspects of animal behaviour, and therefore, the needs of present day...

  19. The behavioural, physiological and immunological responses of lambs from two rearing systems and two genotypes to exposure to humans

    Contributor(s):: Goddard, P. J., Fawcett, A. R., Macdonald, A. J., Reid, H. W.

    96 lambs of 2 genotypes (Scottish Blackface: BF and Texel x (Blue-faced Leicester x Scottish Blackface): T) were studied. From birth to weaning 1 of 2 management regimes was applied: extensive (E), whereby animals were handled as little as possible or semi-intensive (I), in which lambs...

  20. An approach to canine behavioural genetics employing guide dogs for the blind

    Contributor(s):: Takeuchi, Y., Hashizume, C., Arata, S., Inoue-Murayama, M., Maki, T., Hart, B. L., Mori, Y.

    The purpose of this study was to attempt to find related variables of the canine genome with behavioural traits of dogs maintained and tested in a guide dog facility which provided a relatively uniform environment. The study involved 81 Labrador Retrievers that were being trained as guide dogs....