Welfare and environmental benefits of integrating commercially viable free-range broiler chickens into newly planted woodland: A UK case study

Agricultural Systems - Tập 94 - Trang 177-188 - 2007
Tracey Jones1, Ruth Feber2, Gabriel Hemery3, Paul Cook4, Katy James3, Curt Lamberth5, Marian Dawkins6
1Field Laboratory, Oxford University, Wytham OX2 8QJ, United Kingdom
2Wildlife Conservation Research Unit, Oxford University, Tubney House, Tubney, Oxon OX13 5QL, United Kingdom
3Northmoor Trust, Little Wittenham, Abingdon, Oxon OX14 4RA, United Kingdom
4Food Animal Initiative, Field Laboratory, Oxford University, Wytham OX3 8QJ, United Kingdom
5Environmental Consultant, 53 William Street, Marston, Oxford OX3 0ES, United Kingdom
6Zoology Department, Oxford University, South Parks Road, Oxford OX1 3PS, United Kingdom

Tài liệu tham khảo

ADAS, 2002. Methods and measures to minimise the diffuse pollution of water from agriculture – a critical appraisal. DEFRA Project NT2507, June 2002. Bennett, 1996, Willingness-to-pay measures of public support for farm animal welfare legislation, Vet. Rec., 139, 320, 10.1136/vr.139.13.320 Bubier, 1998, Movement of flocks of laying hens in and out of the hen house in four free range systems, Bri. Poult. Sci., 39 Collias, 1967, A field study of the red junglefowl in North Central India, Condor, 360, 10.2307/1366199 Dawkins, 2003, What makes free-range broilers range? In situ measurement of habitat preference, Animal Behav., 66, 151, 10.1006/anbe.2003.2172 Dawkins, 2004, Chicken welfare is influenced more by housing conditions than by stocking density, Nature, 427, 342, 10.1038/nature02226 DEFRA, 2002. The effectiveness of changing farmer practice on the reduction of diffuse pollution of nitrogen and phosphorus. DWPA Project Team, DEFRA, 25 June 2002. Formosa, 2002, Spatial variability of ammonium and nitrate in soils near a poultry farm, Environ. Pollut., 120, 659, 10.1016/S0269-7491(02)00185-9 Grigor, P.N., Hughes, B.O., 1993. Does cover affect dispersal and vigilance in free range domestic fowls? In: Savory, C.J., Hughes B.O. (Eds.), 4th European Symposium on Poultry Welfare. UFAW, pp. 246–247. Hegelund, 2005, Use of the range area in organic egg production systems: effect of climatic factors, flock size, age and artificial cover, Bri. Poult. Sci., 46, 1, 10.1080/00071660400023813 Herenda, 1994, Poultry abattoir survey of carcass condemnation for standard, vegetarian, and free-range chickens, Can. Vet. J., 35, 293 Hoop, 1997, The infection with Salmonella gallinarum-pullorum in poultry: experience from Switzerland, Schweiz. Arch. Tierhelkd., 139, 485 Keeling, 1988, Performance of free-range laying hens in a polythene house and their behaviour on range, Farm Building Progress, 21 Kjær, J.B., Isaksen, P., 1998. Individual use of the free range area by laying hens and effect of genetic strain. In: Proceedings of the 32nd International Congress of the ISAE, Cleremont-Ferrand, France, p. 88. Leyendecker, 2001, Analysis of genotype-environment interactions between layer lines and hen housing systems for performance traits, egg quality and bone breaking strength, Zuchtungskunde, 73, 387 Mirabito, 2001, Descriptive study of outdoor run occupation bt ‘Red Label’ type chickens, Bri. Poult. Sci., 42, S16 Mirabito, 2001, Impact of the presence of peach tree orchards in the outdoor hens runs on the occupation of the space by red Label type chickens, Bri. Poult. Sci., 42, S18 Moberley, 2004, Mortality due to fox predation in free-range poultry flocks in Britain, Vet. Rec., 155, 48, 10.1136/vr.155.2.48 Nielsen, 2003, Feed and strain effects on the use of outdoor areas by broilers, Bri. Polut. Sci., 44, 161, 10.1080/0007166031000088389 Permin, 1999, Prevalence of gastrointestinal helminths in different poultry production systems, Brit. Poult. Sci., 40, 439, 10.1080/00071669987179 Pitcairn, 2002, Defining the spatial impacts of poultry farm ammonia emissions on species composition of adjacent woodland groundflora using Ellenberg Nitrogen Index, nitrous oxide and nitric oxide emissions and foliar nitrogen as marker variables, Environmental Pollution, 119, 9, 10.1016/S0269-7491(01)00148-8 SAS, 1989. SAS Institute Inc. SAS/STAT User’s Guide, Version 6, fourth ed., Cary, NC. Sommer, 2000, Management and state of health in free-range poultry flocks, Wien. Tierarz. Monats., 87, 202 Weeks, 1994, Comparison of the behaviour of broiler chickens in indoor and free-ranging environments, Animal Welfare, 3, 179, 10.1017/S0962728600016833 Zeltner, 2003, Effect of artifical structuring on the use of laying hen runs in a free-range system, Bri. Poult. Sci., 44, 533, 10.1080/00071660310001616264