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  1. Agonistic and mating behavior of adult chickens modified by social and physical environments

    Contributor(s):: Craig, J. V., Bhagwat, A. L.

    Agonistic and mating behaviour in 48 flocks of adult White Leghorn fowls was observed for 8 wk. A factorial experimental design allowed evaluation of behaviour as affected by genetic strain, presence or absence of males , age group (initial ages of 32 or 48 wk), and less crowded floor pens...

  2. Effects of male presence on agonistic behavior and productivity of White Leghorn hens

    Contributor(s):: Bhagwat, A. L., Craig, J. V.

    Three experiments were performed, involving 18, 16 and 48 flocks with 9-16 females and 0-4 males per flock. The White Leghorn strains used had been selected either for egg mass or age at sexual maturity, or were unselected. Age at 50% egg production, rate of lay, survival rate, egg weight, egg...

  3. The effect of two post-weaning management systems on the social and sexual behaviour of zebu bulls

    Contributor(s):: Macfarlane, J. S.

    Over a 4-yr period, 200 Boran X Sahiwal bulls were reared on an unrestricted system (in a ranch herd of 400 head, comprising mature stud bulls) and 100 on a restricted system (in paddocks and in groups of 4-5 bulls, both remaining unchanged throughout). At about 3 yr of age and 450 kg live...

  4. The effect on social organization and milk production of minor group alteratlons in dairy cattle

    Contributor(s):: Collis, K. A., Kay, S. J., Grant, A. J., Quick, A. J.

    2 groups of 15 and 12 cows resp. were maintained under identical conditions of management. The 2 most dominant cows from the 1st group were transferred to the 2nd group then returned 2 wk later. After a further 4 wk, the 2 most subordinate cows from the 1st group were transferred to the 2nd group...

  5. Behavior problems of companion birds

    Contributor(s):: Reisner, I. R.

  6. Detection of oestrus in gilts housed adjacent or opposite boars or exposed to exogenous boar stimuli

    Contributor(s):: Tilbrook, A. J., Hemsworth, P. H.

    24 twelve-month-old gilts, housed in groups of 6, were studied in a 4 x 4 Latin square experiment. Gilts were housed opposite to boars, separated by a corridor 1 m wide ('opposite' group); adjacent to boars, separated by a wire mesh wall ('adjacent' group), isolated from boars and exposed to boar...

  7. Development of a methodology for studying feeding station behaviour of grazing ewes

    Contributor(s):: Roguet, C., Prache, S., Petit, M.

    A test apparatus was developed to study feeding station (FS) use and abandonment by sheep, by controlling FS number, characteristics and distance between FS. It consisted of a rectangular pen with openings in one of the long sides through which the sheep could extend its head to graze. FS...

  8. Effect of social conditions during rearing on mating behaviour of gilts

    Contributor(s):: Soede, N. M., Schouten, W. G. P.

    28 gilts were studied from an av. age of 137 days. Ten gilts were housed individually, having neither tactile nor visual contact with other pigs. The remaining 18 gilts were housed in pairs and had additional contact with gilts in adjacent pens and daily boar contact from 180 days of age. At the...

  9. Genetic selection for extensive conditions

    Contributor(s):: Simm, G., Conington, J., Bishop, S. C., Dwyer, C. M., Pattinson, S.

    This review summarises the strategies currently employed in genetic improvement of livestock, and discusses how these might be modified in future, particularly to incorporate objective measures of adaptation to extensive production systems. The approach is illustrated with reference to the...

  10. Importance of behavioural stimuli in ram-induced ovulation in seasonally anovular Corriedale ewes

    Contributor(s):: Rodriguez Inglesias, R. M., Ciccioli, N. H., Irazoqui, H., Rodriguez, B. T.

    Three groups of about 65 seasonally anovular Corriedale ewes were penned and exposed to rams on 4 Nov. A 4th group (n = 64) was maintained in a 3-ha paddock and also exposed to rams on the same date. Sexual behaviour exhibited by rams in contact with penned ewes was recorded during 9 simultaneous...

  11. Selection of mating partners in boars and sows under multi-sire mating

    Contributor(s):: Tanida, H., Miyazaki, N., Tanaka, T., Yoshimoto, T.

    In the 1st of 2 experiments on a commercial farm, 3 sire groups and 9 sow groups were used to study courtship behaviour between boars and sows. The flow diagram of the behaviours, constructed by sequence analysis, revealed that nosing by boars played an important role in inducing sows to stand...

  12. Social dominance in dairy cattle and the influences of housing and management

    Contributor(s):: Wierenga, H. K.

    The results of 4 experiments with dairy cows, together with the relevant literature are used to discuss the influence of housing and management on social dominance. In total, 7 groups of dairy cows kept in cubicle houses were studied. Stable dominance relationships appeared to exist, but in 41.1%...

  13. The effect of a foraging device (a modified 'Edinburgh Foodball') on the behaviour of the stabled horse

    Contributor(s):: Winskill, L. C., Waran, N. K., Young, R. J.

    A foraging device for horses was developed by modifying the 'Edinburgh Foodball' (British Patent Application 9200499.3). The Foodball comprised a cylinder shaped casing with a feed dispensing hole and an internal feed store. Five Standardbred, individually stabled horses were observed in their...

  14. The influence of different social and physical environments on the incidence of lactational oestrus in sows

    Contributor(s):: Stolba, A., Henderson, R., Wechsler, B.

    The behaviour of sows and their litters housed in different environments of increasing social and physical complexity was observed. Lactational oestrus occurred only in the most complex housing system (4 sows grouped, full boar contact, four indoor pens with four connected outside yards). The...

  15. Animal welfare and sustainability of production under extensive conditions: a non-EU perspective

    Contributor(s):: Matthews, L. R.

    Public attitudes to extensive livestock husbandry systems are favourable and welfare is perceived to be good primarily because animals are free to express their normal behaviour patterns. In many cases, such as agroforestry, this conclusion is fully justified. The author makes the following...

  16. Assessing cumulative impacts to elk and mule deer in the Salmon River Basin, Idaho

    Contributor(s):: O'Neil, T. A., Witmer, G. W.

    Elk (Cervus elaphus) and mule deer (Odocoileus hemionus) are managed in the area by resource agencies to ensure long-term annual returns as big game. A method is described for estimating potential cumulative effects of multiple hydroelectric developments proposed for the area. Assessment of five...

  17. Behaviour and weight change of red deer calves during different weaning procedures

    Contributor(s):: Pollard, J. C., Littlejohn, R. P., Suttie, J. M.

    In a preliminary pilot trial, 60 [male] and [female] calves were not weaned, or weaned and then confined to a paddock or indoors for 7 days, with or without the presence of 2 hand-reared hinds during confinement. Activities observed over 5 days, starting on the day after weaning, differed among...

  18. Early exposure to the opposite sex affects mating behaviour in White Leghorn chickens

    Contributor(s):: Leonard, M. L., Zanette, L., Thompson, B. K., Fairfull, R. W.

    White Leghorn fowls were raised from 6 to 18 wk of age with birds of both sexes (mixed-sex) or in single-sex groups (same-sex). Groups of 6 [female][female] and 1 [male] were then assigned to 4 treatments: (1) mixed-sex [female][female] with a mixed-sex [male] (MM), same-sex [female][female] with...

  19. Effects of sexual stimulation on the sexual performance of rams

    Contributor(s):: Price, E. O., Wallach, S. J. R., Dally, M. R.

    In the 1st of 2 experiments, 11 sexually experienced ram lambs (about 9 months of age) and 18 sexually experienced yearling and 2-yr-old rams were individually exposed to 4 unrestrained, hormone-induced oestrous ewes for 60 min. Before exposure to [female][female], the rams had been allowed or...

  20. Growth, response to humans and corticosteroids in male pigs housed individually and subjected to pleasant, unpleasant or minimal handling during rearing

    Contributor(s):: Paterson, A. M., Pearce, G. P.

    The effect of aversive handling during rearing from 36 to 92 kg body weight on growth rate, plasma cortisol concentration and the behavioural and adrenal responses to humans was investigated using 30 Large White X Landrace [male] pigs which were housed and handled as individuals. Ten pigs were...