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Tags: Genetics + Animal genetics

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  1. Identification and development of measures suitable as potential breeding traits regarding dairy cows' reactivity towards humans

    Full-text: Available

    | Contributor(s):: Ebinghaus, A., Ivemeyer, S., Rupp, J., Knierim, U.

    Behavioural indicators of the human-animal relationship (HAR) are predominantly used in animal welfare science. However, the reactivity of dairy cows - as part of the HAR - is also of interest in the context of dairy breeding, due to its estimated moderate heritability. The avoidance distance...

  2. Domesticating animals in Africa : implications of genetic and archaeological findings

    | Contributor(s):: Gifford-Gonzalez, Diane

  3. Are farmed salmon more prone to risk than wild salmon? Susceptibility of juvenile farm, hybrid and wild Atlantic salmon Salmo salar L. to an artificial predator

    | Contributor(s):: Solberg, M. F., Zhang, ZhiWei, Glover, K. A.

    Offspring of farmed Atlantic salmon have been documented to display lower survival than the offspring of wild salmon in the wild. It has been suggested that reduced survival of farmed salmon offspring in the wild could, in part, be explained by increased susceptibility to predation through...

  4. Fresh wood reduces tail and ear biting and increases exploratory behaviour in finishing pigs

    | Contributor(s):: Telkanranta, H., Bracke, M. B. M., Valros, A.

    Chewing and rooting are high behavioural priorities in pigs. Lack of suitable materials can lead to abnormal behaviours such as tail and ear biting. In commercial farming, slatted floors limit the use of straw, and various point-source objects have therefore been developed. The crucial challenge...

  5. Genetic analysis of the individual pig behaviour in backtests and human approach tests

    | Contributor(s):: Scheffler, K., Stamer, E., Traulsen, I., Krieter, J.

    The most recent development in pig production has focused increasingly on the well-being of the individual pig and animal-friendly housing conditions, i.e. the launch of the group housing of sows in the EU. In this regard, however, standard procedures which may be stressful to the animals and...

  6. The major welfare problems of dairy cows in French commercial farms: an epidemiological approach

    | Contributor(s):: Roches, A. de B. des, Veissier, I., Coignard, M., Bareille, N., Guatteo, R., Capdeville, J., Gilot-Fromont, E., Mounier, L.

    Animal welfare enhancement requires that problems are reliably identified and ranked in order to prioritise corrective actions. Welfare problems vary with the conditions in which animals are maintained. The objectives were to highlight major welfare problems for dairy cows on farms in France, and...

  7. Comparison of adoption agency breed identification and DNA breed identification of dogs

    | Contributor(s):: Voith, V. L., Ingram, E., Mitsouras, K., Irizarry, K.

    Governmental and other agencies may require dog caregivers (owners) to provide breed identification of their dogs. This study compares breed identification by adoption agencies with identification by DNA analysis in 20 dogs of unknown parentage. Of the 20 dogs who had been adopted from 17...

  8. Genetically modified laboratory animals - what welfare problems do they face?

    | Contributor(s):: Buehr, M., Hjorth, P. J., Hansen, A. K., Sandoe, P.

    In this article, we respond to public concern expressed about the welfare of genetically modified (GM) non-human animals. As a contribution to the debate on this subject, we attempt in this article to determine in what situations the practice of genetic modification in rodents may generate...

  9. A review of the effects of prostaglandins on sexual behavior in boars

    | Contributor(s):: Estienne, M. J.

    Artificial insemination (AI) is the primary method of breeding sows in many countries worldwide. In general, semen for AI is collected using the gloved hand technique from boars trained to mount an artificial sow, although automated collection systems have been developed and are in use on some...

  10. Behaviour epigenetics - the connection between environment, stress and welfare

    | Contributor(s):: Jensen, P.

    Epigenetics refers to chemical modifications of DNA, which do not change the base-pair sequence. This involves, for example, methylation of cytosine and different alterations in histone chemistry. Such modifications affect how genes are expressed and can occur as a response to stress, mediated by...

  11. Critical care and survival of fragile animals: the case of Prrxl1 knockout mice

    | Contributor(s):: Monteiro, C., Dourado, M., Matos, M., Duarte, I., Lamas, S., Galhardo, V., Lima, D.

    The generation of genetically modified animal models in which a given gene is permanently deleted or overexpressed, sometimes results in fragile phenotypes characterized by high morbidity and premature death. This undesired outcome creates important welfare difficulties and poses a huge...

  12. Dairy calves' adaptation to group housing with automated feeders

    | Contributor(s):: Fujiwara, M., Rushen, J., Passille, A. M. de

    Group housing of dairy calves with automated milk feeders has likely welfare and labour saving advantages but delays in the calves adapting to the feeding system may reduce these advantages. We examined factors that influence calves' adaptation to the feeders. In Exp. 1, 77 Holstein calves were...

  13. Purebred dogs and canine wellbeing

    | Contributor(s):: Jeppsson, S.

    Breeders of purebred dogs usually have several goals they want to accomplish, of which canine wellbeing is one. The purpose of this article is to investigate what we ought to do given this goal. Breeders typically think that they fulfil their wellbeing-related duties by doing the best they can...

  14. Reliability and validity of a questionnaire survey in canine anxiety research

    | Contributor(s):: Tiira, K., Lohi, H.

    Canine behavior can be assessed through behavioral testing or questionnaire surveys. Behavioral tests, often observed by independent experts, can provide objective data, but capture only a short behavioral sequence in a defined situation and are practical only for small study cohorts....

  15. The role of genes, epigenetics and ontogeny in behavioural development

    | Contributor(s):: Rodenburg, T. B.

    This review focuses on the role of genes, epigenetics and ontogeny in behavioural development of animals. The behavioural characteristics of an individual are determined by its genes and by its physical and social environment. Not only the individual's early life and current environment are of...

  16. Relationships between young stallions' temperament and their behavioral reactions during standardized veterinary examinations

    | Contributor(s):: Peeters, M., Verwilghen, D., Serteyn, D., Vandenheede, M.

    Horse handling and veterinary examination can induce hazardous stress reactions. Such reactions occur especially in young and less-trained horses, particularly stallions, and make their handling a risk for breeders, grooms, and medical staff. Moreover, these stressful situations will affect the...

  17. 'Bling with bite' - the rise of status and weapon dogs

    | Contributor(s):: Harding, S.

  18. Genetic differences for behaviour in juveniles from two strains of brown trout suggest an effect of domestication history

    | Contributor(s):: Benhaim, D., Guyomard, R., Chatain, B., Quillet, E., Begout, M. L.

  19. Icelandic horses with the Silver coat colour show altered behaviour in a fear reaction test

    | Contributor(s):: Brunberg, E., Gille, S., Mikko, S., Lindgren, G., Keeling, L. J.

  20. Influence of gentle touching applied few weeks before slaughter on avoidance distance and slaughter stress in finishing cattle

    | Contributor(s):: Probst, J. K., Hillmann, E., Leiber, F., Kreuzer, M., Neff, A. S.