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  1. Feeding behaviour of sheep on shrubs in response to contrasting herbaceous cover in rangelands dominated by Cytisus scoparius L

    Contributor(s):: Pontes, L. da S., Agreil, C., Magda, D., Gleizes, B., Fritz, H.

    The foraging responses of ewes faced with a diversity of feed items and their effects on broom (Cytisus scoparius L.) consumption were examined. The experiment was conducted on a farm in the autumn with ewes (n=33) grazing three small paddocks (0.44 ha on average, for at least 10 days each)...

  2. Feeding enrichment in an opportunistic carnivore: the red fox

    Contributor(s):: Kistler, C., Hegglin, D., Wurbel, H., Konig, B.

    In captive carnivores, species-specific behaviour is often restricted by inadequate feeding regimens. Feeding live prey is not feasible in most places and food delivery is often highly predictable in space and time which is considerably different from the situation in the wild. As a result,...

  3. Feeding motivation in pregnant sows: effects of fibrous diets in an operant conditioning procedure

    Contributor(s):: Ramonet, Y., Bolduc, J., Bergeron, R., Robert, S., Meunier-Salaun, M. C.

    The effect of fibrous diets fed to pregnant sows on their feeding motivation was studied by an operant conditioning procedure. Fifteen multiparous pregnant sows were assigned to three dietary treatments, which differed in the nature of the fibrous components, according to a 3 x 3 Latin square...

  4. Feeding, resting and social behaviour in ewes housed in two different group sizes

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

    The aim of this experiment was to investigate the effects of increased group size on eating- and resting behaviour, aggression and feed intake in housed ewes. During an initial period of 14 days 36 adult (2-6 years old) ewes of the domestic Norwegian Dala breed were divided into four groups of 9....

  5. Frustration of goal-directed behaviour in swine

    Contributor(s):: Lewis, N. J.

    Eighteen grower pigs were starved for 1, 2 or 3 h each morning by removing the feeders. On training days, Monday and Tuesday of each week, full feeders were returned to the pigs. On test days, Wednesday to Friday of each week, nonfunctional feeders were placed in the pens. Pigs were videotaped...

  6. Grazing and browsing times of goats with three levels of herbage allowance

    Contributor(s):: Orihuela, A., Solano, J. J.

    Three adjacent mixed irrigated pastures of grass (Cenchrus ciliaris) and shrub (Leucaena leucocephala) were used. Grass height was maintained at 27, 14 and 7 cm for treatments I, II and III, respectively, while the height of bushes (6666 plants/ha) were all kept at 150 cm. DM availability was...

  7. Importance of alternative foods on the persistence of flavor aversions: implications for applied flavor avoidance learning

    Contributor(s):: Kimball, B. A., Provenza, F. D., Burritt, E. A.

    We added a novel flavour, citric acid (CA), to a familiar test diet and conditioned an aversion in lambs to the flavored diet using lithium chloride. In 1 h feeding trials, we examined the roles of a novel flavour cue, choice and nutritional quality of alternatives on the persistence of an...

  8. Individual differences in responses of piglets to weaning at different ages

    Contributor(s):: Mason, S. P., Jarvis, S., Lawrence, A. B.

    Several studies indicate each piglet within a litter is affected differently by weaning and that these individual responses may be altered by the age of the litter at weaning. In the present study, eight litters of individually marked piglets (n=79) were randomly assigned to be weaned at 21 or 35...

  9. Influence of sward height on diet selection by horses

    Contributor(s):: Naujeck, A., Hill, J., Gibb, M. J.

    Foraging herbivores are often faced with spatial and temporal heterogeneity within the vegetation they have available to graze and therefore have to make decisions where and when to graze. The study reported in this paper investigated the influence of sward height on diet selection by horses...

  10. Intake rate during meals and meal duration for sheep in different hunger states, grazing grass or white clover swards

    Contributor(s):: Orr, R. J., Penning, P. D., Rutter, S. M., Champion, R. A., Harvey, A., Rook, A. J.

    Meal patterns and rates of feed intake by grazing herbivores may be markedly different from those found in housed ruminants and monogastrics. Cumulative intakes over the evening meal (satiety curves) were measured using groups of sheep (Ovis aries) grazing monocultures of white clover (Trifolium...

  11. Intersucking in dairy cattle - review and questionnaire. (Special Issue: Behaviour and welfare of cattle)

    Contributor(s):: Lidfors, L., Isberg, L.

    Intersucking is an abnormal behaviour in dairy heifers and cows, and it is defined by one animal sucking the teat of another animal with the intention of sucking milk. The aim of this paper is to review earlier studies on intersucking in dairy cattle and to present results from a questionnaire...

  12. Lambs fed protein or energy imbalanced diets forage in locations and on foods that rectify imbalances

    Contributor(s):: Scott, L. L., Provenza, F. D.

    Ruminants eat a variety of foods from different locations in the environment. While water, cover, social interactions, and predators are all likely to influence choice of foraging location, differences in macronutrient content among forages may also cause ruminants to forage in different...

  13. Laterality of lying behaviour in dairy cattle

    Contributor(s):: Tucker, C. B., Cox, N. R., Weary, D. M., Spinka, M.

    Dairy cattle spend, on average, between 8 and 15 h/d lying down. Our objective was to describe the laterality of lying behaviour and assess several internal and external factors that may affect laterality. Internal factors included time spent and time since eating or lying before choosing to lie...

  14. Lithium residue in milk from doses used to condition taste aversions and effects on nursing calves

    Contributor(s):: Ralphs, M. H.

    In the 1st trial, 3 lactating Hereford cows with calves 4-7 months of age were gavaged with lithium chloride at 100, 150 and 200 mg/kg liveweight. Milk yield and lithium concentration in blood serum and milk were measured at intervals up to 96 h after treatment. Milk yield decreased by 20% the...

  15. Motivational and physiological analysis of the causes and consequences of non-nutritive sucking by calves

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

    Non-nutritive sucking by calves of an artificial, dry teat was examined. Most non-nutritive sucking occurred directly after a meal and was elicited by the taste of milk. Increasing the volume of milk drunk did not reduce the amount of non-nutritive sucking, suggesting that the consumption of milk...

  16. On the interpretation of feeding behaviour measures and the use of feeding rate as an indicator of social constraint

    Contributor(s):: Nielsen, B. L.

    Several issues associated with the use and interpretation of feeding behaviour measures are highlighted using examples from the literature on rats, cows and pigs. The inter-relatedness of 6 feeding behaviour variables is illustrated. Different meal patterns adopted to achieve similar intakes are...

  17. Overcoming food neophobia in domestic ruminants through addition of a familiar flavor and repeated exposure to novel foods

    Contributor(s):: Launchbaugh, K. L., Provenza, F. D., Werkmeister, M. J.

    Food neophobia, observed as a decreased intake of novel foods, can cause significant livestock production losses. In the transition from rangeland to feedlot, livestock are usually offered novel diets that they sample cautiously, gradually increasing intake. This familiarization period can slow...

  18. Postingestive feedback from starch influences the ingestive behaviour of sheep consuming wheat straw

    Contributor(s):: Villalba, J. J., Provenza, F. D.

    Plant species present a complex array of biochemicals to herbivores that in conjunction with a plant's physical structure influence intake. The role of postingestive feedback from macronutrients on the ingestion of a low-quality forage by sheep was investigated. The ingestive behaviour of 2...

  19. 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...

  20. Reduction in cross-sucking in calves by the use of a modified automatic teat feeder. (Special issue: Suckling)

    Contributor(s):: Weber, R., Wechsler, B.

    Cross-sucking may be a problem in group-housed calves fed by automatic teat feeders. In the present study, the behaviour of calves fed by a conventional feeder with an open feeding stall (n=15 calves) was compared with the behaviour of calves fed by a modified feeder, which closes in the rear...