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  1. Genetic component of cannibalism in Asian seabass Lates Calcarifer

    Contributor(s):: Pham, Van Khang, Truong, Ha Phuong, Nguyen, Dat Khac, Nguyen, Nguyen Hong

    Cannibalism in the early phase of growth development has been a major concern for marine finfish, including Asian seabass Lates calcarifer, as it is one of the key factors determining economic return of commercial hatcheries. This study thus explored genetic variation in cannibalism through...

  2. 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...

  3. Crib-biting and its heritability in Finnhorses

    Contributor(s):: Hemmann, Karin, Raekallio, Marja, Vainio, Outi, Juga, Jarmo

    Crib-biting in horses is a stereotypical oral behaviour with a prevalence of 2.8–15%, varying between breeds. A genetic basis for crib-biting has been suggested by many researchers, but due to incomplete information on families or the lack of a sufficient number of verified crib-biters,...

  4. Estimation of genetic parameters for behavior based on results of German Shepherd Dogs in Switzerland

    Contributor(s):: Meyer, Franziska, Schawalder, Peter, Gaillard, Claude, Dolf, Gaudenz

    The objective of this study was to estimate heritabilities and correlations of seven behavioral traits in German Shepherd Dogs in Switzerland as well as breeding values for this population. Data from 4855 animals having taken the standardized behavior test of the German Shepherd Dog Club of...

  5. Breeding against harmful social behaviours in pigs and chickens: State of the art and the way forward

    Contributor(s):: Turner, Simon P.

    Harmful social behaviours are prevalent in commercial farming environments and their reduction through economically feasible husbandry changes is challenging. Selective breeding may offer a complementary approach to reduce the expression of these traits. This article explores the progress made in...

  6. 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...

  7. Genetic study of stress assessed with infrared thermography during dressage competitions in the Pura Raza Espanol horse

    | Contributor(s):: Sánchez, María José, Bartolomé, Ester, Valera, Mercedes

    Despite the fact that physiological parameters in dressage are important because of their close connection to human-horse accidents, performance and welfare, these parameters are only rarely included in horse breeding programs. In Spain, the Pura Raza Espanol horse (PRE) Breeding Program focuses...

  8. Heritability of behavioural traits in domestic dogs: a meta-analysis

    | Contributor(s):: Hradecka, L., Bartos, L., Svobodova, I., Sales, J.

    Reviews summarizing the literature on heritability of behavioural traits in dogs have been published repeatedly over the last four decades. The conclusions of these reviews vary to some extent. We applied meta-analysis and re-evaluated the literature available collecting 48 references dealing...

  9. The backtest in pigs revisited - an analysis of intra-situational behaviour

    | Contributor(s):: Zebunke, M., Repsilber, D., Nurnberg, G., Wittenburg, D., Puppe, B.

    The occurrence of different behavioural phenotypes in animals (regarding temperament and personality) has increasingly attracted the attention of scientists dealing with farm animal breeding, management and welfare. As part of the adaptation repertoire, coping behaviour describes how animals deal...

  10. Human‐directed social behaviour in dogs shows significant heritability

    | Contributor(s):: Persson, M. E., Roth, L. S. V., Johnsson, M., Wright, D., Jensen, P.

  11. Can the law help us to tackle genetic diseases that affect the welfare of dogs?

    | Contributor(s):: Boissevain, I.

  12. A behaviour test on German Shepherd dogs: heritability of seven different traits

    | Contributor(s):: Ruefenacht, S., Gebhardt-Henrich, S., Miyake, T., Gaillard, C.

    In this study, genetic and non-genetic effects on behavioural traits were estimated, based on records of the field behaviour test of the Swiss German Shepherd Dog breeding club. This standardized test has been applied since 1949 and comprised the following seven traits: self-confidence, nerve...

  13. Divergent selection on feather pecking behaviour in laying hens ( Gallus gallus domesticus )

    | Contributor(s):: Kjaer, J. B., Sorensen, P., Su, G.

    A selection experiment was initiated in 1996 in which selection for (HP line) and against (LP line) feather pecking was performed. The foundation stock was a White Leghorn layer strain established in 1970 and maintained since then as a random bred control line at the Institute. Six hatches were...

  14. Selection for more confident foxes in Finland and Norway: heritability and selection response for confident behaviour in blue foxes ( Alopex lagopus )

    | Contributor(s):: Kenttamies, H., Nordrum, N. V., Brenoe, U. T., Smeds, K., Johannessen, K. R., Bakken, M.

    As a part of a Nordic project, 'Selection for more confident foxes', selection experiments with blue foxes lasting 4 years (1995-98) were arranged in Finland and Norway. In Finland, the study was carried out on a private farm with closed selection and production lines. In Norway, the experiment...

  15. 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....

  16. 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...

  17. A note on genetic parameters of gilt responses to humans

    | Contributor(s):: Hellbrugge, B., Tolle, K. H., Presuhn, U., Krieter, J.

    In this study, a response test towards a stockperson was evaluated for improved maternal behaviour and increased piglet survival. Records were available from 638 German Landrace gilts with 860 observations tested for the response to an observer in the familiar environment of the mating centre....

  18. Estimates of genetic parameters for hunting performance traits in three breeds of gun hunting dogs in Norway

    | Contributor(s):: Brenoe, U. T., Larsgard, A. G., Johannessen, K. R., Uldal, S. H.

    Breeding of gun dogs in Norway is partially based on field hunting tests. Dogs are tested individually and performances of seven traits are judged by scores from 1 to 6. The traits are hunting eagerness, speed, style, independence, seeking width, ability to work in the field and cooperation. In...

  19. Estimating genetic variability in temperamental traits in German Angus and Simmental cattle

    | Contributor(s):: Gauly, M., Mathiak, H., Hoffmann, K., Kraus, M., Erhardt, G.

    Behavioural traits related to temperament were studied, and the genetic variability estimated in German Angus (Aberdeen Angus x German dual purpose breeds) and Simmental cattle. Temperament was defined as the behavioural response of the animal to handling. Five progeny groups of both breeds...

  20. Maternal protective behaviour of German Angus and Simmental beef cattle after parturition and its relation to production traits

    | Contributor(s):: Hoppe, S., Brandt, H. R., Erhardt, G., Gauly, M.

    A total of 390 German Angus (Aberdeen Angus x German dual-purpose breeds) and Simmental cows were tested in seven consecutive years (2000-2006) for maternal protective behaviour which was assessed by categorizing behavioural response of the dams during earmarking their calves. The test was...