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  1. Effect of natal dispersal on the reproductive strategies of the young Misaki feral stallions

    Contributor(s):: Khalil, A. M., Murakami, N.

    The behaviour of 12 young male Misaki feral horses was observed once a week from January 1988 to March 1997 on Kyushu Island, Japan. The behaviour of young stallions has previously been grouped into 2 categories: (1) a development stage which occurs just after separation from the dam, where the...

  2. Pregnancy in goats does not influence intake of novel or familiar foods with or without toxins

    Contributor(s):: Knubel, B. F. R., Panter, K. E., Provenza, F. D.

    Some hypothesize that mammals decrease intake of foods that contain toxins during pregnancy to protect the fetus. We conducted a longitudinal study of feeding behavior to determine if pregnancy-related changes in food selection and intake occurred in goats. Goats eat modest amounts of toxic...

  3. Genetic analysis of reactivity to humans in Goettingen minipigs

    Contributor(s):: Kohn, F., Sharifi, A. R., Simianer, H.

    Goettingen minipigs are laboratory animals with an increasing demand over the last few years. At the moment, Goettingen minipigs are not selected for a low reactivity to humans and this trait is not included in the breeding programme. However, it is obvious that there is a need for genetically...

  4. Relative value of a nest box, sand floor and extra space during the breeding season in adult blue fox males

    Contributor(s):: Koistinen, T., Jauhiainen, L., Korhonen, H. T.

    We measured how much adult blue fox males value access to a nest box and sand floor enrichments while a platform and activity object are available simultaneously. Ten blue fox males were solitary housed in test apparatuses with permanent access to a platform and wooden block (activity object)...

  5. Sexual performance of twin ram lambs and the effect of number and sex of contemporary siblings

    Contributor(s):: Price, E. O., Bench, C. J., Borgwardt, R. E., Dally, M. R.

    The objectives of this investigation were to determine the degree of correspondence in the sexual performance of twin male sheep and to compare the sexual performance of ram lambs born co-twin to another male (M-M), co-twin to a female (M-F) and as single (S) offspring. Individual ram lambs (n =...

  6. Effects of different suckling systems on milk production, udder health, reproduction, calf growth and some behavioural aspects in high producing dairy cows - a review. (Special issue: Suckling)

    Contributor(s):: Krohn, C. C.

    This article discusses the consequences of different suckling systems in industrial countries on milk production, udder health, reproduction and behaviour of high-producing dairy cows, and the effects on the gain, health and behaviour of the calves. The suckling systems are divided into three...

  7. Pain and discomfort in male piglets during surgical castration with and without local anaesthesia as determined by vocalisation and defence behaviour

    Contributor(s):: Leidig, M. S., Hertrampf, B., Failing, K., Schumann, A., Reiner, G.

    Surgical castration of male piglets without anaesthesia is routine in domestic pig production causing serious distress and impairment of welfare. Thus, the EU is seeking alternatives, with local anaesthesia being one of the possible candidates. The aim of the present study was to compare surgical...

  8. Effect of early fenceline exposure to estrous ewes on the sexual performance of yearling rams

    Contributor(s):: Price, E. O., Borgwardt, R., Dally, M. R.

    A total of 104 rams, 7-8 months of age, were given either no contact (NC), direct contact (DC) or fenceline (FL) exposure to oestrous ewes during a 3-week period in the autumn breeding season. When initially tested for sexual performance at 18-19 months, a higher proportion of NC rams exhibited...

  9. Sow behaviour towards humans during standard management procedures and their relationship to piglet survival

    Contributor(s):: Lensink, B. J., Leruste, H., Bretagne, T. de, Bizeray-Filoche, D.

    Piglet crushing remains a major problem in pig production and is partly related to sow behavioural traits. The sows' responses to the presence of humans around farrowing could partly contribute to piglet crushing through increased reactivity and getting up and lying down behaviour. The aim of the...

  10. A note on the use of odor manipulation to facilitate the adoption of alien lambs by ewes bearing twins

    Contributor(s):: Price, E. O., Dally, M. R., Hernandez, L.

    Adoption of alien lambs by ewes bearing single natural offspring has been facilitated by the use of artificial odorants such as neatsfoot oil to establish a common odour for own and alien young and by the use of cloth stockinette jackets to exchange natural odours between lambs. The objective of...

  11. A refinement and validation of the Monash Canine Personality Questionnaire (MCPQ)

    Contributor(s):: Ley, J. M., Bennett, P. C., Coleman, G. J.

    The investigation of canine personality has failed to find strong agreement between studies as to its structure. The area has been hampered by a reliance on human personality models and by a tendency to limit the types of dogs used as subjects. These problems were recently addressed during the...

  12. Applied animal behaviour science. (Special issue: Suckling)

    Contributor(s):: Lidfors, L., Svennersten-Sjaunja, K., Redbo, I.

    This supplement contains articles that focus on behavioural and physiological aspects of suckling and/or sucking in ruminants. Abnormal sucking behaviour, particularly cross-sucking and non-nutritive sucking, in calves are presented; and the effects of milk flow and milk volume, the presence of a...

  13. Yearling rams initially disinterested in estrous ewes subsequently exhibit subnormal sexual performance

    Contributor(s):: Price, E. O., Orihuela, A., Parthasarathy, V., Borgwardt, R., Dally, M. R.

    Individual 30-min sexual performance (serving capacity) tests were administered to 73 Targhee rams at 18-19 months of age. 41 rams (56

  14. Exposure to a recently mated male increases ram sexual performance

    Contributor(s):: Maina, D., Katz, L. S.

    Previous studies reported that the sexual performance of rams did not improve following observation of heterosexual behaviour, which was in contrast to effects on male cattle, goats, pigs and horses. The purpose of this study was to investigate the possibility that exposure to a recently mated...

  15. Validation of an automatic system to detect position changes in puerperal sows

    Contributor(s):: Mainau, E., Dalmau, A., Ruiz-de-la-Torre, J. L., Manteca, X.

    Piglet crushing by the sow is one of the main causes of piglet mortality during the first 48 h after birth. The frequency of position changes may be partially related to the pain caused by farrowing. The aim of this study was to develop and validate an automatic system to register position...

  16. Periparturient nest building: implications for parturition, kit survival, maternal stress and behaviour in farmed mink ( Mustela vison )

    Contributor(s):: Malmkvist, J., Palme, R.

    Several types of nesting materials with different capacity as substrate for nest building are currently supplied to farmed mink. We investigated whether different nesting resources and possibility of performing periparturient nest-building influenced (a) the parturition, (b) the vitality and...

  17. Selection for contrasting adrenocortical responsiveness in Japanese quail ( Coturnix japonica ) influences sexual behaviour in males

    Contributor(s):: Marin, R. H., Satterlee, D. G.

    Selection of Japanese quail for a reduced (low stress, LS) rather than exaggerated (high stress, HS) adrenocortical response to brief restraint is associated with a non-specific reduction in stress responsiveness, decreased fearfulness, greater sociality, and enhanced male reproductive function,...

  18. A note on the effects of calf stimuli on the response of Zebu cows to Synchro-mate-B

    Contributor(s):: Quesada, Y., Estrada, S., Cubero, M., Garcia, F., Galina, C. S., Molina, R., Orihuela, A.

    The effect of Synchro-mate-B (SMB, ear implant containing 6 mg norgestomet) was measured on the oestrous response and the establishment of cyclicity using different calf stimuli. Multiparous Zebu cows, were divided in three groups. In the first, 32 animals were treated with SMB leaving the calves...

  19. Reproductive and aggressive behavior in male broiler breeders with varying fertility levels

    Contributor(s):: McGary, S., Estevez, I., Russek-Cohen, E.

    Differential male fertility in naturally mated broiler breeders appears to be an inadvertent negative result of genetic selection for growth and high yield. Identifying male behaviors that reliably indicate fertility could improve production while avoiding artificial insemination procedures. We...

  20. Peri-partum posture and behaviour of gilts and the location of their piglets in lines selected for components of efficient lean growth

    Contributor(s):: McPhee, C. P., Kerr, J. C., Cameron, N. D.

    Peri-partum posture and behaviour of gilts from lines selected for different components of efficient lean growth were studied to determine if behavioural changes may have been associated with the observed responses in reproductive performance. The proportions of time that gilts expressed defined...