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  1. A Data-Driven Simulation of the Trophallactic Network and Intranidal Food Flow Dissemination in Ants

    Contributor(s):: Bles, Olivier, Deneubourg, Jean-Louis, Sueur, Cédric, Nicolis, Stamatios C.

    Food sharing can occur in both social and non-social species, but it is crucial in eusocial species, in which only some group members collect food. This food collection and the intranidal (i.e., inside the nest) food distribution through trophallactic (i.e., mouth-to-mouth) exchanges are...

  2. Are Underweight Shelter Dogs More Likely to Display Food Aggression toward Humans?

    Full-text: Available

    | Contributor(s):: Katherine A. Miller, Emily D. Dolan, Victoria A. Cussen, Pamela J. Reid

    It is commonly believed that underweight or emaciated dogs are predisposed to food aggression toward humans. Each year, the American Society for the Prevention of Cruelty to Animals (ASPCA) receives hundreds of dogs from criminal cruelty cases. The dogs range from emaciated to overweight. We...

  3. Interdisciplinary research to advance animal welfare science: an introduction

    | Contributor(s):: Camerlink, I.

  4. Morbidity and mortality of invertebrates, amphibians, reptiles, and mammals at a major exotic companion animal wholesaler

    | Contributor(s):: Ashley, S., Brown, S., Ledford, J., Martin, J., Nash, A. E., Terry, A., Tristan, T., Warwick, C.

    The authors formally investigated a major international wildlife wholesaler and subsequently confiscated more than 26,400 nonhuman animals of 171 species and types. Approximately 80% of the nonhuman animals were identified as grossly sick, injured, or dead, with the remaining in suspected...

  5. The welfare implications of large litter size in the domestic pig I: biological factors

    | Contributor(s):: Rutherford, K. M. D., Baxter, E. M., D'Eath, R. B., Turner, S. P., Arnott, G., Roehe, R., Ask, B., Sandoe, P., Moustsen, V. A., Thorup, F., Edwards, S. A., Berg, P., Lawrence, A. B.

  6. Captive bears in human-animal welfare conflict: a case study of bile extraction on Asia's bear farms

    | Contributor(s):: Kikuchi, R.

  7. Effects of food structure and nutritional quality and animal nutritional state on intake behaviour and food preferences of sheep

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

    There is evidence of the independent effects of plant physical and chemical characteristics on foraging, but little has been done to determine how these traits interact to affect food selection. The effect of the nutritional state of lambs on intake behaviour and preference for feeds with...

  8. An ethicist's commentary on the case of the anorexic client who does not feed her dog

    | Contributor(s):: Rollin, B. E.

  9. Immediate and subsequent effects of a short fast on the behavior of laying hens

    | Contributor(s):: Webster, A. B.

    360 Hyline W77 (W77) and 360 Hyline Brown (Brown) 19-week-old hens were housed in pairs. At 63 and 64 weeks of age, feed was withdrawn for 96 h from half of the W77 and Brown hens, respectively. Behaviour was monitored on the day of starvation and 1, 3, 5 and 9 weeks after the fast. In W77 hens,...

  10. Light exposure during incubation affects competitive behaviour in domestic chicks

    | Contributor(s):: Rogers, L. J., Workman, L.

    Domestic chickens reared from eggs kept in darkness during the last 3 days of incubation developed a more flexible group structure than those which have received light exposure during this period. Position in the social hierarchy was scored in terms of competition for access to a food source on...

  11. A push-door for measuring motivation

    | Contributor(s):: Petherick, J. C., Rutter, S. M., Duncan, I. J. H.

  12. Quantifying motivation using a computer-controlled push-door

    | Contributor(s):: Petherick, J. C., Rutter, S. M.

    A computer-controlled push-door system was designed and tested as a method for measuring motivation. Eleven domestic hens were trained to use the push-door to gain access to food. They were deprived of food for 12 h or 43 h on 12 occasions and the push-door was used to measure the amount of...

  13. An indoor method for studying the preferences of sheep and cattle at pasture

    | Contributor(s):: Dumont, B., Petit, M.

    The choices of heifers and ewes between a poor quality hay (Festuca arundinacea) offered ad libitum, and a good quality hay (main species; Festuca rubra, Dactylis glomerata, Lolium perenne and Poa trivialis) offered in limited quantities were measured in 2 trials. The experiments were designed to...

  14. Choice of sheep and cattle between vegetative and reproductive cocksfoot patches

    | Contributor(s):: Dumont, B., Petit, M., D'Hour, P.

    Unexploited reproductive areas appear in pastures when grazing pressure is low. Influence of sward height and starvation on the ability of sheep and cattle to feed on areas of low-quality highly available forage was studied. Preference and rate of biting of 1-year-old ewes and 18-month-old...

  15. Effects of a 15h journey followed by either 12h starvation or ad libitum hay on the behaviour and blood chemistry of sheep

    | Contributor(s):: Cockram, M. S., Kent, J. E., Waran, N. K., McGilp, I. M., Jackson, R. E., Amory, J. R., Southall, E. L., O'Riordan, T., McConnell, T. I., Wilkins, B. S.

    In a 2x2 factorial design, 6 sheep were either transported by road for 15 h or kept in their home pens, and then either starved for 12 h with access to water or offered hay ad libitum with access to water. All groups were offered hay and water 12 h after transport. Behavioural observations and...

  16. Methods for measuring feeding motivation in sheep

    | Contributor(s):: Jackson, R. E., Waran, N. K., Cockram, M. S.

    An operant crate and a push-door were used to measure feeding motivation in Suffolk sheep (2-4 years of age) after 0, 6, 12, 18 and 24 h without feed. In experiment 1 (n=12), sheep had to push a panel with their noses to obtain a feed reward. In experiment 2 (n=14), sheep had to run a race and...

  17. Stress hormone responses of sheep to food and water deprivation at high and low ambient temperatures

    | Contributor(s):: Parrott, R. F., Lloyd, D. M., Goode, J. A.

    Eight Clun Forest wethers were used to study the effects of feed and/or water deprivation at different ambient temperatures (7 or 35 degrees C) on stress hormone release. Blood samples were taken from catheterized animals at the start and at 6 h intervals during 48 h tests in an environmental...

  18. The value of environmental resources to domestic hens: a comparison of the work-rate for food and for nests as a function of time

    | Contributor(s):: Cooper, J. J., Appleby, M. C.

    This study was conducted to investigate feeding motivation and perching motivation in laying hens. The importance of a nest box during the prelaying period was compared with the importance of food following a period of deprivation. 12 Isa Brown hens (Gallus gallus domesticus) were trained to open...

  19. Welfare of badgers ( Meles meles ) subjected to culling: development and evaluation of a closed season

    | Contributor(s):: Woodroffe, R., Bourne, F. J., Cheeseman, C. L., Cox, D. R., Donnelly, C. A., Gettinby, G., McInerney, J. P., Morrison, W. I.

    For the past 25 years, European badgers (Meles meles) have been subject to culling in Britain in attempts to limit the spread of tuberculosis (TB) to cattle. As part of a far-reaching evaluation of the effectiveness and acceptability of badger culling as a TB control measure, this paper assesses...