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Resources (61-80 of 546)

  1. Reducing mother-young separation distress by inducing ewes into oestrus at the day of weaning

    Contributor(s):: Perez-Leon, I., Orihuela, A., Lidfors, L., Aguirre, V.

  2. Feeding Chromonaela odorata during pregnancy to goat dams affects acceptance of this feedstuff by their offspring

    Contributor(s):: Phan Vu, Hai, Everts, H., Dam Van, Tien, Schonewille, J. T., Hendriks, W. H.

  3. A review of the welfare consequences of surgical castration in piglets and the evaluation of non-surgical methods

    Contributor(s):: Prunier, A., Bonneau, M., Borell, E. H. von, Cinotti, S., Gunn, M., Fredriksen, B., Giersing, M., Morton, D. B., Tuyttens, F. A. M., Velarde, A.

  4. Attitudes of Canadian beef producers toward animal welfare

    Contributor(s):: Spooner, J. M., Schuppli, C. A., Fraser, D.

  5. Lying patterns of high producing healthy dairy cows after calving in commercial herds as affected by age, environmental conditions and production

    Contributor(s):: Steensels, M., Bahr, C., Berckmans, D., Halachmi, I., Antler, A., Maltz, E.

  6. Ratings of animal personality as a tool for improving the breeding, management and welfare of zoo mammals

    Contributor(s):: Tetley, C. L., O'Hara, S. J.

  7. Assessing the welfare of dairy calves: outcome-based measures of calf health versus input-based measures of the use of risky management practices

    Contributor(s):: Vasseur, E., Pellerin, D., Passille, A. M. de, Winckler, C., Lensink, B. J., Knierim, U., Rushen, J.

  8. The future of teaching and research in companion animal biology in departments of animal sciences

    Contributor(s):: McNamara, J. P.

  9. Human-animal interaction, stress, and embryo production in Bos indicus embryo donors under tropical conditions

    Contributor(s):: Macedo, G. G., Zuccari Neto, C. E. S., Abreu, U. G. P. de, Negrao, J. A., Costa e Silva, E. V. da

    This study investigated the effect of human-animal interaction (HAI) and the stress response on the quality of embryo production in superovulated Nelore (Bos indicus) cattle, under tropical conditions. Thirty-two females underwent a superovulation protocol for 5 days. Cortisol concentrations were...

  10. A role for strain differences in waveforms of ultrasonic vocalizations during male

    Contributor(s):: Sugimoto, Hiroki, Okabe, Shota, Kato, Masahiro, Koshida, Nobuyoshi, Shiroishi, Toshihiko, Mogi, Kazutaka, Kikusui, Takefumi, Koide, Tsuyoshi

  11. Taking ethics into account in farm animal breeding: what can the breeding companies achieve? (Animals and their welfare)

    Contributor(s):: Olsson, I. A. S., Gamborg, C., Sandoe, P.

    Animal welfare and the ethical issues it raises have been discussed intensively for a couple of decades. The emphasis has been on the direct effects of housing and husbandry, but more attention is now being given to problems originating in selective breeding. European attempts to adjust animal...

  12. New Zealand farmer narratives of the benefits of reduced human intervention during lambing in extensive farming systems

    Contributor(s):: Fisher, M.

    Easy-care or natural lambing pertains to those sheep able to successfully lamb and rear at least one lamb without human assistance in a difficult environment. Such sheep may have a higher survival rate, lower lamb mortality, and require less shepherding at lambing than other sheep breeds or...

  13. Transgenesis in animal agriculture: addressing animal health and welfare concerns

    Contributor(s):: Greger, M.

    The US Food and Drug Administration's final Guidance for Industry on the regulation of transgenesis in animal agriculture has paved the way for the commercialization of genetically engineered (GE) farm animals. The production-related diseases associated with extant breeding technologies are...

  14. Estrous and related behaviour in postpartum Holstein cows

    Contributor(s):: Hurnik, J. F., King, G. J., Robertson, H. A.

    Over a period of 1 yr, 3 consecutive groups, each consisting of 12 postpartum Holstein-Friesian cows aged from 3 to 9 yr, were observed continually for 80 days. The distribution of mounting behaviour showed evidence of circadian rhythm with the highest frequency occurring during the nocturnal...

  15. Synchronized egg laying in flocks of domestic geese ( Anser anser )

    Contributor(s):: Kent, J. P., Murphy, K. J.

    Egg production of eight flocks of domestic geese, housed separately, though sharing a common grazing area, show a synchronized laying pattern. Housed egg production of each flock was recorded over 83 consecutive days of the laying season. Using time-series statistical procedures it was found that...

  16. Social status and physical condition of mother and sex ratio of offspring in cervids

    Contributor(s):: Kojola, I.

    The degree of polygyny and litter size varies between deer species and may affect the relationship between maternal condition and offspring sex ratio. The hypothesis that females in good condition produce more male offspring than females in poorer condition was investigated by analysing data from...

  17. Further evaluation of the developmental asynchrony hypothesis of sex ratio variation

    Contributor(s):: Krackow, S.

    A discussion of differences in the speed of development of male and female blastocysts up to the stage of uterine implantation compared with the developmental stage of the uterus may cause sex ratio biases in response to environmental, physiological and psychological cues. It may also cause sub...

  18. Effect of the presence of a dominant bull on performance of two age group bulls in libido tests

    Contributor(s):: Lopez, H., Orihuela, A., Silva, E.

    In 2 trials, twelve 15-month-old and ten 27-month-old sexually naive Simmental bulls were libido tested in the presence or absence of a dominant mature bull. In the 1st trial, individual sexual performance tests were conducted. On alternate tests days, a mature bull was present in an adjacent pen...

  19. Developmental instability and light regime in chickens ( Gallus gallus )

    Contributor(s):: Moller, A. P., Sanotra, G. S., Vestergaard, K. S.

    Fluctuating asymmetry, a measure of developmental instability, was measured in 3 skeletal characters in chickens raised under 3 different lighting regimes: (A) a 16:8 light-dark cycle, (B) a changing light regime, and (C) permanent light. Chickens reared under permanent light developed 40% larger...

  20. The effect of different pen partition configurations on the behaviour of sheep

    Contributor(s):: Jorgensen, G. H. M., Andersen, I. L., Boe, K. E.

    The aim of our experiment was to test if different configurations of additional walls would increase total resting time and synchrony of resting behaviour while decreasing displacements from the resting area in small groups of sheep. A total of 24 adult pregnant ewes of the Nor-X breed were...