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  1. A case study of primiparous maternal and infant gorilla ( Gorilla gorilla gorilla ) behavior

    Contributor(s):: Crosby, J. Y., Lukas, K. E.

    A primiparous mother and her infant were subjects of a longitudinal behavioral study at Lincoln Park Zoo in Chicago, Illinois. From November 1998 to November 1999, we collected a total of 100 hr of focal nonhuman animal instantaneous point sampling and all occurrence data on the mother and her...

  2. A comparison of the role of vision and hearing in ewes finding their own lambs

    Contributor(s):: Walser, E. E. S.

  3. A conceptual model of the human-animal relationships dynamics during newborn handling on cow-calf operation farms

    Contributor(s):: Costa, F. de O., Valente, T. S., Toledo, L. M. de, Ambrosio, L. A., Campo, M. del, Costa, M. J. R. P. da

  4. A developmental approach to dog's sociality

    Contributor(s):: Mogi, K., Nagasawa, M., Kikusui, T.

    A special relationship between human and dog is considered to be established by dog's characteristic social skill and cognitive ability, based on adequate emotional and affiliative behavior. It has been emphasized that puppy's experience in its developing period is prerequisite for dog's...

  5. A developmental approach to dog's sociality.

    Full-text: Available

    | Contributor(s):: Mogi, K., Nagasawa, M., Kikusui, T.

    A special relationship between human and dog is considered to be established by dog's characteristic social skill and cognitive ability, based on adequate emotional and affiliative behavior. It has been emphasized that puppy's experience in its developing period is prerequisite for...

  6. A general review and survey of maternal behaviour in the rabbit

    | Contributor(s):: Verga, M., Dell'Orto, V., Carenzi, C.

    The literature on maternal behaviour of rabbits is reviewed with special emphasis on socialization, mating, nest building and parturition. Results of a survey of mating and maternal behaviour in rabbits are reported.

  7. A note on chick adoption: a complementary strategy for rearing rheas

    | Contributor(s):: Labaque, M. C., Navarro, J. L., Martella, M. B.

    Adoption of greater rhea (Rhea americana) chicks by males and the comparative survival of adopted vs. male's own chicks in a semi-captive population was investigated. Groups of marked chicks (one to 11 individuals) hatched in incubators were released at intervals near males with their own broods....

  8. A note on differences in nursing behaviour on pig farms employing individual and group housing of lactating sows

    | Contributor(s):: Silerova, J., Spinka, M., Sarova, R., Slamova, K., Algers, B.

    The sow nursing behaviour may be affected by housing environment. So far, studies have focused on within-farm experimental comparisons, but data comparing nursing behaviour in a sample of commercial farms using different housing systems are lacking. This study had the following goals: (I) To...

  9. 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....

  10. A note on separation from one or more lamb(s) in Merino lines divergently selected for ewe multiple rearing ability

    | Contributor(s):: Cloete, S. W. P., Scholtz, A. J., Hoope, J. M. T.

    During 1993-95, post parturient behaviour was studied in 370 Merino ewes, 2-6 years of age, from 2 lines divergently selected for multiple rearing ability kept at the Elsenburg Development Institute. Since 1986, high line ram and ewe replacements had been selected from dams that reared >1 lamb...

  11. A note on sheltering behaviour by ewes before and after lambing

    | Contributor(s):: Pollard, J. C., Shaw, K. J., Littlejohn, R. P.

    The effects of lambing and lamb rearing on sheltering behaviour was investigated in multiparous Romney x Perendale crossbred ewes with either 9 (5 ewes) or 3 months (5) of wool growth during daylight hours for 6 weeks over the lambing period, in a pasture with little vegetative shelter but with a...

  12. A novel environment inhibits milk ejection in the pig but not through HPA activity

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

    Six sows (3-14 days postpartum) were placed with their piglets in a different farrowing pen (novel environment) for 2 h or were driven into the new pen then immediately returned to their own pen (control). All sows were subject to both treatments over 2 consecutive days. Nursings were recorded as...

  13. A quantitative ethogram of behavior of yearling ewes during two hours post-parturition

    | Contributor(s):: McGlone, J. J., Stobart, R. H.

    A total of 2130 behaviours representing 24 behavioural categories were observed during the period from parturition to lamb nursing for seven ewe-lamb pairs. Both individual behaviours and behavioural sequences were counted. Ewes showed a high frequency of licking, especially directed at the head...

  14. A review of the behavioral and neurochemical consequences of early weaning in rodents. (Special Issue: Early Weaning.)

    | Contributor(s):: Kikusui, T., Nakamura, K., Mori, Y.

    In mammals, mother-infant bonding is based on the dependence of the infant on the mother for sustenance, i.e., the infant suckles milk, but also involving a need for physical contact. Weaning is one of the most important events that occur in developing animals and the timing of natural weaning is...

  15. A review of the behavioural and physiological adaptations of hill and lowland breeds of sheep that favour lamb survival

    | Contributor(s):: Dwyer, C. M., Lawrence, A. B.

    Extensively managed animals, often living in harsh and unfavourable environments, need specific adaptations that promote survivability. This is particularly important at parturition and during the neonatal period, when ewe and lamb mortality is highest. To understand the survival adaptations of...

  16. A review of the behavioural mechanism of milk ejection of the domestic pig

    | Contributor(s):: Fraser, D.

    The sow has complex nursing and suckling behaviour, consisting of several distinct phases of sucking by the piglets and a characteristic pattern of grunting by the sow. A review of observations and experimental findings suggests cause-and-effect relationships between the different elements of sow...

  17. A survey of foal rejecting mares

    | Contributor(s):: Houpt, K., Lieb, S.

  18. A test of sows' willingness to nurse

    | Contributor(s):: Thodberg, K., Jensen, K. H.

    The aim of the study was to validate a test for willingness of sows to nurse to find a test situation in which maximum variation in the nursing motivation of sows was displayed. The factors considered were the interval since last successful nursing, level of hunger of the sow and activity of the...

  19. Achieving optimum performance in a loose-housed farrowing system for sows: the effects of space and temperature

    | Contributor(s):: Baxter, E. M., Adeleye, O. O., Jack, M. C., Farish, M., Ison, S. H., Edwards, S. A.

    Piglet survival relies on interactive influences of the sow, her piglets and their environment. There are a number of design challenges in a loose-housed farrowing and lactation system to optimise this dynamic, including achieving farrowing in the desired location (i.e. a protected nest area) and...

  20. Activity patterns and companion preferences of domestic goat kids

    | Contributor(s):: Lickliter, R. E.

    Domestic goat kids' companion preferences and daily activity patterns were investigated. Kids were more often associated with similarly aged animals (siblings and non-siblings) than with their mother or other adult females during their first 15 weeks following parturition. By the end of their...