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  1. The Epistemic Irresponsibility of the Subjects-of-a-Life Account

    Contributor(s):: Tanner, Julia

  2. Mother-young behaviours at lambing in grazing ewes: effects of lamb sex and food restriction in pregnancy

    Contributor(s):: Freitas-De-Melo, A., Ungerfeld, R., Hotzel, M. J., Abud, M. J., Alvarez-Oxiley, A., Orihuela, A., Damian, J. P., Perez-Clariget, R.

    This study investigated whether the level of pasture allowance from before conception until late pregnancy affects ewe-lamb behaviours at birth, and if those behaviours differ according to the sex of the lambs. We performed two experiments, in which 96 ewes were assigned to one of two nutritional...

  3. Pregnant cattle associations and links to maternal reciprocity

    Contributor(s):: Swain, D. L., Patison, K. P., Heath, B. M., Bishop-Hurley, G. J., Finger, A.

    Cattle are a highly gregarious species that form strong social connections. Social support following calving serves to increase offspring survival and conception rates for the following breeding season. It has been shown that cattle change their association preferences following calving, but the...

  4. Stereotypic behaviours and mating success in domestic mares

    Contributor(s):: Benhajali, H., Ezzaouia, M., Lunel, C., Charfi, F., Hausberger, M.

    Stereotypies are often associated with suboptimal environments. However, their adaptive significance remains under debate. The aim of this study was to relate the occurrence of stereotypies in breeding mares to their mating success. The overall, first and second cycle conception rates,...

  5. Effects of sex, litter size and periconceptional ewe nutrition on the ewe-lamb bond

    Contributor(s):: Hernandez, C. E., Matthews, L. R., Oliver, M. H., Bloomfield, F. H., Harding, J. E.

    Undernutrition restricted to the time around conception in sheep alters endocrine and metabolic responses in the offspring. Studies in rats suggest that such an early insult can also alter the behaviour of the offspring. We studied the effects of mild maternal periconceptional undernutrition...

  6. Social dominance of female goats affects their response to the male effect

    Contributor(s):: Alvarez, L., Martin, G. B., Galindo, F., Zarco, L. A.

    The aim of this study was to assess the influence of social rank of anestrous goats on their interval to ovulation after exposure to males. Forty-five adult females were observed before and after the introduction of males to their pen. Behavioural sampling was used in both periods to record...

  7. Relationships between human-animal interactions and productivity of commercial dairy cows

    Contributor(s):: Hemsworth, P. H., Coleman, G. J., Barnett, J. L., Borg, S.

    This study examined the relationships between a number of stockperson and cow variables at 66 commercial dairy farms in Victoria, Australia over a 2-year period (1995-1997). Variables such as the attitudes and behaviour of stockpeople toward their cows and the behavioural response to humans and...

  8. Mating competency of rams and flock fertility

    Contributor(s):: Winfield, C. G., Cahill, L. P.

    The mating performance of 4 Corriedale rams with low mating competency (ratio of mounts to services approx. 12:1) were compared with those of 4 rams with high mating competency (ratio approx. 2:1) when they were mated for 8 days in single-sire flocks at a ram:ewe ratio of 1:90. The 2 groups of...

  9. The accuracy of several aids in detecting oestrus in dairy cattle

    Contributor(s):: Fulkerson, W. J., Sawyer, G. J., Crothers, I.

    The accuracy and efficiency of oestrus detection using behavioural observations, hormone-treated steers or tail paint, or behavioural observations in combination with hormone-treated steers or tail paint was assessed using 120 Friesian cows. The oestrus detection rate for cows in these 5 groups...

  10. Selection for tonic immobility duration does not affect the response to novelty in quail

    Contributor(s):: Saint-Dizier, H., Leterrier, C., Levy, F., Richard, S.

    Genetic selection on a single fear test, the tonic immobility test, seems to result in selection on fearfulness, i.e. the propensity to exhibit fear responses, whatever the fear tests used. However, the conception of fear as a single variable has been challenged by the recognition that fear is...

  11. Social dominance of female dairy goats and response to oestrous synchronisation and superovulatory treatments

    Contributor(s):: Ungerfeld, R., Gonzalez-Pensado, S., Dago, A. L., Vilarino, M., Menchaca, A.

    Two experiments were performed to determine if there is a relation between the goat's hierarchical position, and (1) the conception rate and litter size obtained with hormonal oestrous synchronisation treatments and fixed timed artificial insemination, and (2) the number of corpus luteum (CL) and...

  12. High-ranking mares of captive plains zebra Equus burchelli have greater reproductive success than low-ranking mares

    Contributor(s):: Pluhacek, J., Bartos, L., Culik, L.

    Plains zebra live in harems that include one to six adult mares. Between these mares is a strong order of social hierarchy. The social rank of an equid mare is typically correlated with her age. Further, high-ranking captive plains zebra mares produce more surviving offspring than low-ranking...

  13. The influence of the human-animal relationship on the productivity and welfare of the pig

    Contributor(s):: Hemsworth, P. H., Barnett, J. L., Cronin, G. M.

    The effects of "unpleasant", control (minimal contact with humans), and "pleasant" handling of boars and gilts from 11 wk of age were studied. Boars in the pleasant handling group attained a fully coordinated mating response at an earlier age and had larger testes at 160 days of age than those in...