The effect of space allowance on performance, aggression and immune competence of growing pigs housed on straw deep-litter at different group sizes

Barnett, 1992, Effects of pen size, partial stalls and method of feeding on welfare-related behavioural and physiological responses of group-housed pigs, Appl. Anim. Behav. Sci., 34, 207, 10.1016/S0168-1591(05)80116-9 Baxter, 1985, Social space requirements of pigs, 116 1984, 216 von Borell, 1994, Neuroendocrine integration of stress and significance of stress for the performance of farm animals, 23 Brumm, 1996, Effect of space allowance on barrow performance to 136 kilograms body weight (NCR-89 Committee on Management of Swine), J. Anim. Sci., 74, 745, 10.2527/1996.744745x Bryant, 1972, Some effects of stocking rate and group size upon agonistic behaviour in groups of growing pigs, Br. Vet. J., 128, 64, 10.1016/S0007-1935(17)37133-6 Bryant, 1974, Effects of stocking rate upon the performance, general activity and ingestive behaviour of groups of growing pigs, Br. Vet. J., 130, 139, 10.1016/S0007-1935(17)35936-5 Edwards, S.A., Turner, S.P., 2000. Housing and management of pigs in large social groups. Pig J. (in press). Edwards, 1988, Effects of floor area allowance on performance of growing pigs kept on fully slatted floors, Anim. Prod., 46, 453, 10.1017/S0003356100019061 Kornegay, 1984, Effects of floor space and number of pigs per pen on performance, Pig News Inform., 5, 23 Krider, 1975, Magnesium supplementation, space and docking effects on swine performance and behaviour, J. Anim. Sci., 40, 1027, 10.2527/jas1975.4061027x Lyons, 1995, A comparison of productivity and welfare of growing pigs in four intensive systems, Livest. Prod. Sci., 43, 265, 10.1016/0301-6226(95)00050-U McGlone, 1994, Space requirements for finishing pigs in confinement: Behaviour and performance while group size and space vary, Appl. Anim. Behav. Sci., 39, 331, 10.1016/0168-1591(94)90166-X Mitchell, 1983, The effect of three stocking rates of pigs housed in identical-sized pens on performance, Anim. Prod., 37, 41, 10.1017/S0003356100001501 Nielsen, N.P., 1989. [Cages versus pens for piglets]. (In Danish). Landsudvalget for Svin Report 163. Danske Slagterier. Nielsen, N.P., 1992. [Batch size in piglet units]. Landsudvalget for Svin. Report 232. Danske Slagterier. Pedersen, J.S., 1990. [16 compared with 48 finishers per pen]. Landsudvalget for Svin Report 182. Danske Slagterier. Petherick, 1983, A biological basis for the design of space in livestock housing, 103 Petley, 1988, Exercise and postexercise energy expenditure in growing pigs, Can. J. Physiol. Pharmacol., 66, 721, 10.1139/y88-115 P.I.C., 1994. Getting started in outdoor pig production. Pig Improvement Company, Abingdon, UK. Spoolder, H.A.M., Corning, S., Edwards, S.A., 1997. A comparison of methods of specifying stocking density for welfare and performance of finishing pigs on different floor types. Proc. Br. Soc. Anim. Sci. 43. Spoolder, 1999, Effects of group size and feeder space allowance on welfare in finishing pigs, Anim. Sci., 69, 481, 10.1017/S135772980005133X Turner, 1999, The influence of drinker allocation and group size on the drinking behaviour, welfare and production of growing pigs, Anim. Sci., 68, 617, 10.1017/S1357729800050645 Varley, 1985, Enzyme-linked immunosorbet assay for the measurement of immunoglobulin G concentrations in porcine plasma and colostrum, Res. Vet. Sci., 38, 279, 10.1016/S0034-5288(18)31794-6 Welfare of Livestock Regulations, 1994. Statutory Instrument 2126. HMSO, London, UK.