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Beak trimming of poultry: its implications for welfare

Published online by Cambridge University Press:  18 September 2007

B.O. Hughes  and
M.J. Gentle
B.O. Hughes
Affiliation:
Roslin Institute(Edinburgh), Roslin, Midlothian EH25 9PS, UK
M.J. Gentle
Affiliation:
Roslin Institute(Edinburgh), Roslin, Midlothian EH25 9PS, UK
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Abstract

Beak trimming remains a controversial subject. It has undoubted economic advantages for the producer, in particular by reducing the incidence of cannibalism and feather pecking, but the procedure is traumatic for the bird and deprives it of important sensory feedback from its beak. It can have harmful neuroanatomical consequences: although the tissue damage is repaired the sensory receptors are not replaced, neuromas may form and become a source of chronic pain. The danger of neuroma formation is reduced and may be absent if the procedure is performed only in young birds. Beak trimming results in both immediate and more persistent effects on behaviour, food intake and body weight. Trimmed birds are generally less active, show less behaviour involving pecking, eat less and grow more slowly than controls. These changes are primarily a consequence of the sensory deprivation. In caged medium hybrid layers and growing broilers beak trimming is difficult to justify, whereas the incidence of pecking damage is so high in light hybrids in multi-bird cages at high stocking densities that beak trimming is universal. A case can also be made for its continuation, on welfare as well as on production grounds, in floor-housed flocks of laying fowl and breeding turkeys. In these contexts it reduces mortality by inhibiting feather pecking, cannibalism and, possibly, aggressive pecking. In the long term beak trimming should be phased out and undesirable behaviour controlled by environmental means and by increased effort being devoted to the genetic selection of commercial stocks which do not engage in damaging pecking, either in cages or when floor-housed in large flocks.

Keywords

Beak trimmingpecking damagepoultrywelfare
Type
Research Article
Information
World's Poultry Science Journal , Volume 51 , Issue 1 , March 1995 , pp. 51 - 61
Copyright
Copyright © Cambridge University Press 1995

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References

Allen, J. and Perry, G.C. (1975) Feather pecking and cannibalism in a caged layer flock. British Poultry Science 16: 441–451.CrossRefGoogle Scholar
Bell, D.D. and Kuney, D.R. (1991) Effect of beak-trimming age and high fiber grower diets on layer performance. Poultry Science 70: 1105–1112CrossRefGoogle ScholarPubMed
Blokhuis, H.J. and Beuving, G. (1993) Feather pecking and other characteristics in two lines of laying hen. In: Proceedings of the 4th European Symposium on Poultry Welfare (Eds Savory, C.J. and Hughes, B.O.), Potters Bar, Universities Federation for Animal Welfare, pp. 266–267Google Scholar
Blokhuis, H.J. (1989) The effect of a sudden change in floor type on pecking behaviour in chicks. Applied Animal Behaviour Science 22: 65–73CrossRefGoogle Scholar
Blokhuis, H.J., van der Haar, J.W. and Koole, P.G. (1987) Effects of beak trimming and floor type on feed consumption and body weight of pullets during rearing. Poultry Science 66: 623–625CrossRefGoogle ScholarPubMed
Brambell, F.W.R. (1965) Report of the Technical Committee to Enquire into the Welfare of Animals kept under Intensive Livestock Husbandry Systems. Command Paper 2836. Her Majesty's Stationery Office, LondonGoogle Scholar
Breward, J. (1983) Cutaneous nociceptors in the chicken beak. Journal of Physiology 346: 56PGoogle Scholar
Breward, J. and Gentle, M.J. (1985) Neuroma formation and abnormal afferent nerve discharges after partial beak amputation (beak trimming) in poultry. Experientia 41: 1132–1134CrossRefGoogle ScholarPubMed
Carey, J.B. (1990) Influence of age at final beak trimming on pullet and layer performance. Poultry Science 69: 1461–1466CrossRefGoogle ScholarPubMed
Christmas, R.B. (1991) The effect of precision beak trimming at seven days of age on performance of broilers measured at 42 days of age. Poultry Science 70 (Suppl): 153Google Scholar
Craig, J.V. and Lee, H-Y. (1989) Research note: Genetic stocks of White Leghorn type differ in relative productivity when beaks are intact versus trimmed. Poultry Science 68: 1720–1723CrossRefGoogle Scholar
Cuthbertson, G.J. (1980) Genetic variation in feather pecking behaviour. British Poultry Science 21: 447–450CrossRefGoogle ScholarPubMed
Deaton, J.W., Lott, B.D., Branton, S.L. and Simmons, J.D. (1987) Research note: Effect of beak trimming on body weight and feed intake of egg-type pullets fed pellets or mash. Poultry Science 66: 1552–1554CrossRefGoogle ScholarPubMed
Duncan, I.J.H., Slee, G.S., Seawright, E. and Breward, J. (1989) Behavioural consequences of partial beak amputation (beak trimming) in poultry. British Poultry Science 30: 479–488CrossRefGoogle ScholarPubMed
Duncan, E.T., Appleby, M.C. and Hughes, B.O. (1992) Effect of perches in cages on welfare and production of hens. British Poultry Science 33: 25–35CrossRefGoogle Scholar
Elson, H.A. (1990) Design and management of different egg production systems. In: Proceedings of the 8th European Poultry Conference, Barcelona, pp. 186–195Google Scholar
Engstrom, B. and Schaller, G. (1993) Experimental studies of the health of laying hens in relation to housing system. In: Proceedings of the 4th European Symposium on Poultry Welfare (Eds Savory, C.J. and Hughes, B.O.), Potters Bar, Universities Federation for Animal Welfare, pp. 87–96Google Scholar
Eskeland, B. (1977) Behaviour as an indicator of welfare in hens under different systems of management, population density, social status and by beak trimming. Scientific Reports of the Agricultural University of Norway 56: No. 7.Google Scholar
Eskeland, B. (1981) Effects of beak trimming. In: First European Symposium on Poultry Welfare (Ed. Sorensen, Y.), Danish Branch of WPSA, Copenhagen, pp. 193–200Google Scholar
Faure, J.M., Melin, J.M. and Mantovani, C. (1993) Welfare of –guinea fowl and game birds. In: Proceedings of the 4th European Symposium on Poultry Welfare (Eds Savory, C.J and Hughes, B.O.), Potters Bar, Universities Federation for Animal Welfare, pp. 148–157Google Scholar
Gentle, M.J. (1986a) Beak trimming in poultry. World's Poultry Science Journal 42: 268–275CrossRefGoogle Scholar
Gentle, M.J. (1986b) Neuroma formation following partial beak amputation (beak trimming) in the chicken. Research in Veterinary Science 41: 383–385CrossRefGoogle ScholarPubMed
Gentle, M.J. (1989) Cutaneous sensory afferents recorded from the nervus intramandibularis in Gallus gallus var. domesticus. Journal of Comparative Physiology A164: 763–774CrossRefGoogle Scholar
Gentle, M.J. (1991) The acute effects of amputation on peripheral trigeminal afferents in Gallus gallus domesticus. Pain 46: 97–103CrossRefGoogle Scholar
Gentle, M.J. and Hunter, L.M. (1990) Physiological and behavioural responses associated with feather removal in Gallus gallus domesticus. Research in Veterinary Science 50: 95–101CrossRefGoogle Scholar
Gentle, M.J., Hughes, B.O. and Hubrecht, R.C. (1982) The effect of beak trimming on food intake: feeding behaviour and body weight in adult hens. Applied Animal Ethology 8: 147–159CrossRefGoogle Scholar
Gentle, M.J., Hunter, L.M. and Waddington, D. (1991) The onset of pain-related behaviours following partial beak amputation in the chicken. Neuroscience Letters 128: 113–116CrossRefGoogle ScholarPubMed
Gentle, M.J., Thorp, B.H. and Hughes, B.O. (1995) Anatomical consequences of partial beak amputation (beak trimming) in turkeys. Research in Veterinary Science 58: 158–162CrossRefGoogle ScholarPubMed
Gentle, M.J., Waddington, D., Hunter, L.M. and Jones, R.B. (1990) Behavioural evidence for persistant pain following partial beak amputation in chicken. Applied Animal Behaviour Science 27: 149–157CrossRefGoogle Scholar
Gernat, A.G. and Adams, A.W. (1992) Effect of age at beak trimming on rearing and laying performance of egg-type hens fed two levels of protein during the early stages of the laying period. Poultry Science 71 (Suppl 1): 2Google Scholar
Grigor, P.N., Hughes, B.O. and Gentle, M.J. (1995) Should turkeys be beak trimmed? An analysis of the costs and benefits of different methods. Veterinary Record (in press)CrossRefGoogle Scholar
Guhl, A.M. (1962) The behaviour of chickens. In: The Behaviour of Domestic Animals (Ed. Hafez, E.S.E.), Baillière, Tindall and Cox, London, pp. 491–530Google Scholar
Hansen, I. (1993) Ethological studies of laying hens in aviaries and cages. PhD Thesis. Agricultural University of NorwayGoogle Scholar
Harter-Dennis, J.M. and Pescatore, A.J. (1986) Effect of beak-trimming regimen on broiler performance. Poultry Science 65: 1510–1515CrossRefGoogle Scholar
Hocking, P.M. (1994) Role of genetics in safeguarding and improving the welfare of poultry. In: Symposium on Future Directions for Welfare Research. Proceedings of 9th European Poultry Conference, Glasgow, pp. 233–236Google Scholar
Hughes, B.O. and Duncan, I.J.H. (1972) The influence of strain and environmental factors upon feather pecking and cannibalism in fowls. British Poultry Science 13: 525–547CrossRefGoogle ScholarPubMed
Hughes, B.O. and Michie, W. (1982) Plumage loss in medium-bodied hybrid hens: the effect of beak trimming and cage design. British Poultry Science 23: 59–64CrossRefGoogle Scholar
Hughes, B.O. et al. (1984) A survey (MAFF/PRC) of beak trimming in commercial laying and breeding flocks: stage 1, preliminary results. Ministry of Agriculture, Fisheries and Food, Poultry Section. Quarterly Journal No. 146. 12 1984, 51–59Google Scholar
Kuo, F.L., Craig, J.V. and Muir, W.M. (1991) Selection and beak trimming effects on behavior, cannibalism and short-term production traits in White Leghorn pullets. Poultry Science 70: 1057–1068CrossRefGoogle ScholarPubMed
Lee, H-Y. and Craig, J.V. (1990) Beak trimming effects on the behavior and weight gain of floor-reared, egg-strain pullets from three genetic stocks during the rearing period. Poultry Science 69: 568–575CrossRefGoogle Scholar
Lee, H-Y. and Craig, J.V. (1991) Beak trimming effects on behavior patterns, fearfulness, feathering and mortality among three stocks of White Leghorn pullets in cages or floor pens. Poultry Science 70: 211–221CrossRefGoogle ScholarPubMed
MAFF (1987) Codes of Recommendations for the Welfare of Livestock: Domestic Fowls. Alnwick, Ministry of Agriculture, Fisheries and FoodGoogle Scholar
Nørgaard-Nielsen, G., Kjaer, J. and Simonsen, H.B. (1993) Afprøvning af to alternative aegproduktions-systemer-Hans Kier Systemet og Boleg II systemet. Statens Husdyrbrugsforsøg Forskningsrapport 9/1993Google Scholar
Oguntona, T., Musa, R. and Zubair, A.K. (1988) Research note: Effects of beak trimming at different ages on the body weight and feed conversion of guinea fowl (Numida meleagris). Poultry Science 67: 141–144CrossRefGoogle Scholar
Pescatore, A.J. and Harter-Dennis, J.M. (1986) The evaluation of watering systems for rearing of beak-trimmed and non-beak-trimmed broilers. Poultry Science 65 (Suppl): 104Google Scholar
Rauch, H.-W., Pingel, H. and Bilsing, A. (1993) Welfare of waterfowl. In: Proceedings of the 4th European Symposium on Poultry Welfare (Eds Savory, C.J. and Hughes, B.O.), Potters Bar, Universities Federation for Animal Welfare, pp. 139–147Google Scholar
Renner, P.A. and Nestor, K.E. (1987) Effect of age of beak trimming and of injection of poults at hatching with a vitamin and electrolyte solution on mortality and body weight. Poultry Science 66 (Suppl): 164Google Scholar
Richter, F. (1954) Experiments to ascertain the causes of feather-eating in the domestic fowl. In: Proceedings of the 10th World Poultry Congress, Edinburgh, pp. 258–262Google Scholar
Robinson, D. (1979) Effects of cage shape, colony size, floor area and cannibalism preventatives on laying performance. British Poultry Science 20: 345–356CrossRefGoogle Scholar
Savory, C.J. (1994) Feather pecking. Report of a Workshop at the 9th European Poultry Conference,Glasgow. World's Poultry Science Association.Google Scholar
Struwe, F.J., Gleaves, E.W., Douglas, J.H. and Bond, P.L. (1992) Effect of rearing, floor type and ten-day beak trimming on stress and performance of caged layers. Poultry Science 71: 70–75CrossRefGoogle ScholarPubMed
Trout, J.M., Bierlmaier, S.J. and Mashaly, M.M. (1988) Effect of beak trimming on performance of broiler chicks. Poultry Science 67 (Suppl): 166Google Scholar
Workman, L. and Rogers, L.J. (1990) Pecking preferences in young chicks: effects of nutritive reward and beak-trimming. Applied Animal Behaviour Science 26: 115–126CrossRefGoogle Scholar