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Tags: Genetics

All Categories (141-160 of 191)

  1. Aggression in canine females

    Contributor(s):: Scott, John Paul

  2. Canine mental genetics

    Contributor(s):: Whitney, L. F.

    Certain behaviour patterns of the wolf are briefly examined and are likened to similar modified patterns in the domestic dog, thus implying acceptance of the theory that the dog's ancestor was the wolf. The author's earlier findings on characteristics peculiar to different breeds of sporting dog...

  3. Molecular investigation of relatedness of Campylobacter coli isolated from child with campylobacteriosis and healthy, household dog

    Contributor(s):: Wardak, S., Duda, U., Wojsa, B.

    Thermotolerant species of Campylobacter (mainly C. jejuni and C. coli) are among the most frequently isolated bacterial agents of gastroenteritis in many developed countries. C. coli is less prevalent than C. jejuni. The main reservoir of C. coli is swine, however this pathogen may also be found...

  4. Genetic control of dairy cattle behavior

    Contributor(s):: Schutz, M. M., Pajor, E. A.

    Past efforts to understand the genetics of behaviour in cattle, and livestock in general, have emphasized changes related to the domestication process. Especially in intensive systems, domestic cattle may not express the full range of innate behaviour when they are provided with food, shelter,...

  5. Genetics and animal domestication: new windows on an elusive process

    Contributor(s):: Dobney, K., Larson, G.

    Domesticated animals are universally familiar. How, when, where and why they became domesticated is less well understood. The genetic revolution of the past few decades has facilitated novel insights into a field that previously was principally the domain of archaeozoologists. Although some of...

  6. The effect of early separation from the mother on pups in bonding to humans and pup health

    Contributor(s):: Slabbert, J. M., Rasa, O. A. E.

    The separation of young dogs from their dams (n = 20) one litter from each bitch (n=55) at the age of 6 weeks had a negative effect on the physical condition and weight gain of separated pups compared with that of pups with maternal contact till 12 (n=40) weeks. Disease susceptibility and...

  7. Animal trait ontology: the importance and usefulness of a unified trait vocabulary for animal species

    Contributor(s):: Hughes, L. M., Bao, J., Hu, Z. L., Honavar, V., Reecy, J. M.

    Ontologies help to identify and formally define the entities and relationships in specific domains of interest. Bio-ontologies, in particular, play a central role in the annotation, integration, analysis, and interpretation of biological data. Missing from the number of bio-ontologies is one that...

  8. Science and society in dialogue about marker assisted selection

    Contributor(s):: Benard, M., Vriend, H. de, Haperen, P. van, Beekman, V.

    Analysis of a European Union funded biotechnology project on plant genomics and marker assisted selection in Solanaceous crops shows that the organization of a dialogue between science and society to accompany technological innovations in plant breeding faces practical challenges. Semi-structured...

  9. Uncertainties of nutrigenomics and their ethical meaning

    Contributor(s):: Korthals, M., Komduur, R.

    Again and again utopian hopes are connected with the life sciences (no hunger, health for everyone; life without diseases, longevity), but simultaneously serious research shows uncertain, incoherent, and ambivalent results. It is unrealistic to expect that these uncertainties will disappear. We...

  10. Crowing and mating behaviors in lines of chickens selected for mating frequency

    Contributor(s):: Benoff, F. H., Siegel, P. B.

  11. Sexual responses of pullets to selection for mating behavior in male chickens

    Contributor(s):: Siegel, P. B., Cook, W. T.

    Bidirectional selection for number of completed matings in cockerels resulted in lines differing in male sexual behaviour. No correlated responses, however, were observed in the sexual behaviour of S12, S13 and S14 generation pullets. The sexual behaviour of females was measured as courtings...

  12. Some observations on the role of behavior in cattle production and future research needs

    Contributor(s):: Arave, C. W., Hurnik, J. F., Friend, T. H.

    This review includes consideration of the genetics of behaviour.

  13. The effects of maternal influences on sheep: breed differences in grazing, resting and courtship behaviour

    Contributor(s):: Key, C., Maciver, R. M.

    Clun Forest and Welsh Mountain sheep were lambed over the same period in a lowland area and half the lambs were cross-fostered by the other breed. 2 wk after lambing was over, half the female lambs with their dams were transferred to fenced upland pastures, the breeds being kept separate, until...

  14. The value of choice tests in assessing welfare of domestic animals

    Contributor(s):: Rooijen, J. van

  15. Behaviour test for eight-week old puppies - heritabilities of tested behaviour traits and its correspondence to later behaviour

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

    Play and exploratory behaviour, and behaviour when isolated (total of 10 tests) was tested in 630 German Shepherd puppies at 8 weeks of age. All dogs were also tested at 450-600 days of age using to regimen for selection of service dogs. Significant sex differences were found in 4 of the 10 puppy...

  16. Feather pecking in laying hens: new insights and directions for research?

    Contributor(s):: Rodenburg, T. B., Hierden, Y. M. van, Buitenhuis, A. J., Riedstra, B., Koene, P., Korte, S. M., Poel, J. J. van der, Groothuis, T. G. G., Blokhuis, H. J.

    The aim of this paper is to present new insights and promising directions for future research on feather pecking in laying hens. Our starting point was a multidisciplinary research program on feather pecking in The Netherlands, in which ethological, physiological, ontogenetic and genetic...

  17. Genetic selection for extensive conditions

    Contributor(s):: Simm, G., Conington, J., Bishop, S. C., Dwyer, C. M., Pattinson, S.

    This review summarises the strategies currently employed in genetic improvement of livestock, and discusses how these might be modified in future, particularly to incorporate objective measures of adaptation to extensive production systems. The approach is illustrated with reference to the...

  18. A review of some factors affecting the expression of libido in beef cattle, and individual bull and herd fertility

    Contributor(s):: Petherick, J. C.

    This paper examines some of the factors that affect the expression of libido in beef cattle, focusing on the male and the free-ranging situation. The ways in which bull libido is assessed and the relationship between libido test results and fertility are discussed. Genetics play a role in...

  19. Canine behavioural genetics - a review

    Contributor(s):: Mackenzie, S. A., Oltenacu, E. A. B., Houpt, K. A.

  20. Genetic analysis of hunting behaviour in Swedish Flatcoated Retrievers

    Contributor(s):: Lindberg, S., Strandberg, E., Swenson, L.

    The aim of this study was to estimate genetic parameters for traits observed in a hunting behaviour test carried out by the Swedish Flatcoated Retriever club, as well as to investigate the existence of broader personality traits. During the test, the dog is exposed to various standardised hunting...