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  1. Effects of stocking rate on measures of efficacy and welfare during argon gas euthanasia of weaned pigs

    Contributor(s):: Fiedler, K. J., Parsons, R. L., Sadler, L. J., Millman, S. T.

  2. Behavioural response of pure Ankole and crossbred (Ankole * Holstein) cows to seasonal pasture variations in south-western Uganda

    Contributor(s):: Idibu, J., Kabi, F., Mpairwe, D.

    This study evaluated the effects of season and pasture species on variations in sward composition, pasture quantity (plant-height and biomass) and quality [crude protein (CP), neutral detergent fibre (NDF) and in vitro organic matter digestibility (IVOMD)]. Behavioural responses of a group of 10...

  3. Effects of stocking rate on measures of efficacy and welfare during argon gas euthanasia of weaned pigs

    Contributor(s):: Fiedler, K. J., Parsons, R. L., Sadler, L. J., Millman, S. T.

    The objective of this study was to evaluate the effects of chamber stocking rate on facets of animal welfare and efficacy during euthanasia of weaned pigs ( Sus scrofa domesticus) with argon gas. Two hundred and thirty-three weaned pigs designated for euthanasia at a commercial production farm...

  4. Stakeholder attitudes toward farm animal welfare

    Contributor(s):: Heleski, C. R., Mertig, A. G., Zanella, A. J.

    We developed a survey to measure attitudes toward farm animal welfare, then targeted two US groups considered highly influential in this area: veterinary college faculty members with large animal/food animal emphasis (VCF) and animal science faculty members (ANS). The survey was conducted via...

  5. Influence of stocking density on tonic immobility, lameness, and tibial dyschondroplasia in broilers

    Contributor(s):: Sanotra, G. S., Lawson, L. G., Vestergaard, K. S.

    This study assessed the effect of stocking density on the development of fear reaction (tonic immobility), lameness (gait), and tibial dyschondroplasia in broiler chicks of mixed sex. During 3 experiments, the study used 49 500 broiler chicks (Ross 208). Of these, 432 focal chicks were randomly...

  6. Effects of stocking rate on measures of efficacy and welfare during carbon dioxide gas euthanasia of young pigs

    Contributor(s):: Fiedler, K. J., Parsons, R. L., Sadler, L. J., Millman, S. T.

    The objective of this study was to evaluate the effects of chamber stocking rate on facets of animal welfare and efficacy during gas euthanasia of young pigs ( Sus scrofa domesticus). Crossbred pigs (390 neonatal and 270 weaned) designated for euthanasia at production farms were randomly assigned...

  7. Grazing intensity effects on vegetation, livestock and non-game birds in North Dakota mixed- grass prairie

    Contributor(s):: Eric D. Salo, Kenneth F. Higgins, Bob D. Patton, Kristel K. Bakker, William T. Barker

    We conducted studies in native prairie mixed-grass pastures in south~central North Dakota (U.S.A.) during 1989- 2003 to determine how different grazing intensities affected structural characteristics of vegetation, livestock production and the occurrence and density of grassland birds. Generally,...

  8. A case control study of on-farm risk factors for tail biting in pigs

    Contributor(s):: Moinard, C., Mendl, M., Nicol, C. J., Green, L. E.

  9. Agonistic behaviour and feather pecking in single-sexed and mixed groups of laying hens

    Contributor(s):: Oden, K., Vestergaard, K. S., Algers, B.

    The effects of the presence of males on female aggressiveness and feather pecking in groups of about 500 laying hens housed in an aviary system were studied. In all, 10 groups of ISA Brown laying hens were observed at 21, 35, 45 and 55 weeks of age on 2 farms, during 2 years. In the second year,...

  10. Assessing the effects of a chronic stressor, stocking density, on welfare indicators of juvenile African catfish, Clarias gariepinus Burchell

    | Contributor(s):: Nieuwegiessen, P. G. van de, Boerlage, A. S., Verreth, J. A. J., Schrama, J. W.

    Fish welfare is an area of increasing interest and stocking densities used in commercial aquaculture have been highlighted as a subject of specific welfare concern. The present study assessed how stocking density affects growth performance (final body weight, SGR, FCR), physiological (plasma...

  11. Behavioural variation in cultivated juvenile Atlantic cod (Gadus morhua L.) in relation to stocking density and size disparity

    | Contributor(s):: Uglem, I., Kjorsvik, E., Gruven, K., Lamberg, A.

    The aim of this study was to examine the behaviour and activity of Atlantic cod (Gadus morhua) juveniles (~65-120 mm total length) in relation to varying stocking density (~500-2000 fish per m3) and size disparity under both experimental and commercial hatchery conditions. This was done by...

  12. Diet preference for grass and legumes in free-ranging domestic sheep and cattle: current theory and future application

    | Contributor(s):: Rutter, S. M.

    This paper reviews the current theory and potential practical applications of research on the diet preference for grass and legumes in grazing domestic sheep and cattle. Although much of this work has focussed on grass and clover as a model system, it has wider theoretical implications and...

  13. Differential effects of increased stocking density, mediated by increased flock size, on feather pecking and aggression in laying hens

    | Contributor(s):: Nicol, C. J., Gregory, N. G., Knowles, T. G., Parkman, I. D., Wilkins, L. J.

    Six flocks of laying hens were housed in percheries at 4 stocking densities (6, 14, 22 or 30 birds m-2) from 14 to 30 weeks of age. Stocking density was manipulated by changes in flock size (72, 168, 264 or 368 birds) in percheries with the same floor and height dimensions. The pecking behaviour...

  14. Effect of cage height on the welfare of growing rabbits

    | Contributor(s):: Princz, Z., Radnai, I., Biro-Nemeth, E., Matics, Z., Gerencser, Z., Nagy, I., Szendro, Z.

    The objective of this study was to analyse the preference of rabbits for cages of various heights, their production and occurrence of ear lesions. Experiments were conducted at the University of Kaposvar with Pannon White rabbits. In experiments 1 and 2 (preference test) growing rabbits (n=112) -...

  15. Effects of density on perching behavior of broiler chickens

    | Contributor(s):: Pettit-Riley, R., Estevez, I.

    Exercise through perching has been suggested as a way to reduce the impact of leg problems in broiler chickens. It is possible that higher stocking densities may motivate birds to perch more, and perhaps reduce some of the detrimental effects to broiler health seen with high stocking densities....

  16. Effects of space allowance on the grazing behaviour and spacing of sheep

    | Contributor(s):: Sibbald, A. M., Shellard, L. J. F., Smart, T. S.

    In each of two experiments, four groups of 10 female Scottish Blackface sheep grazed for 2 weeks at each of four space allowances, according to a Greco-Latin Square design. Space allowances were 80, 100, 133 or 200 m2 per head in experiment 1 and 50, 67, 100 or 200 m2 per head in experiment 2....

  17. Interdependence of welfare outcome measures and potential confounding factors on finishing pig farms

    | Contributor(s):: Mullan, S., Edwards, S. A., Butterworth, A., Whay, H. R., Main, D. C. J.

    The factors influencing the observed prevalence of some welfare outcome measures were investigated as part of a larger project examining the feasibility and benefits of incorporating on-farm welfare outcome assessments into UK Pig Farm Assurance Schemes. All finishing pigs (>40 kg) on six farms...

  18. Synthetic lying mats may improve lying comfort of gestating sows

    | Contributor(s):: Tuyttens, F. A. M., Wouters, F., Struelens, S., Sonck, B., Duchateau, L.

    A prototype lying mat as an alternative to straw bedding for improving sow lying comfort was evaluated using a dynamic group of 47 gestating sows housed in a pen with 5 communal lying areas. Mats were installed in 3 lying areas while the concrete floors of the remaining lying areas remained...

  19. Dynamics of aggression in the domestic fowl

    | Contributor(s):: Estevez, I., Newberry, R. C., Keeling, L. J.

    We conducted three experiments designed to investigate the effect of group size (GS) on the frequencies of different types of aggressive acts performed by 11- to 21-week-old White Leghorn pullets. In these experiments, we systematically controlled for bird density, pen size, and previous social...

  20. Effect of stocking density on the short-term behavioural responses of dairy cows

    | Contributor(s):: Hill, C. T., Krawczel, P. D., Dann, H. M., Ballard, C. S., Hovey, R. C., Falls, W. A., Grant, R. J.

    The objective of this research was to measure the effects of increased stocking density of stalls and headlocks on the short-term behavioural responses of lactating Holstein cows. Multiparous (n=92) and primiparous (n=44) cows were assigned to four pens of 34 cows each and stocking densities...