Compton, M. M., H. P. Van Ki-ey, P. L. Ruszler and F. C. Gwazdauskas. 1981. The effects of claw removal on growth rate, gonadal steroids, and stress response in cage reared pullets. Poult. Sci. 60:2120-2126.
Goodling, A. C., D. G. Satterlee, G. C. Cerniglia and L. A. Jacobs-Perry. 1984. Influence of toe clipping and stocking density on laying hen performance. Poult. Sci. 63:1722-1731.
Fickenwirth, A., D. W. Foeisch and C. Dolf. 1985. Sand shortens the claws and beak of hens - prevents injuries. In: Proceedings of the Second European Poultry Welfare Symposium, Celle, pp. 288-290.
Glatz, P. C. 2000. Beak trimming methods-Review. Asian-Aust. J. Anim. Sci. 13 (11):1619-1737.
Glatz, P. C. and C. A. Lunam. 1996. Behavioural and anatomical aspects of poor feather cover in caged hens. In: Proceedings of Australian Poultry Science Symposium, Vol. 8:157-160.
Hill, A. T. 1975. Foot sore incidence among de-clawed Leghorntype layers, as affected by strain, density and birds per cage. Can. J. Anim. Sci. 55:165-166.
Rauch, H. W. 1992. Self shortening of claw length by caged laying hens. Leipzig. 10:11-12.
Ruszler, P. L. and J. T. Kiker. 1975. Toe clipping cage reared pullets and its effect on growth and egg production. Poult. Sci. 54:1346.
Ruszler, P. L. and J. H. Quisenberry. 1979. The effect of declawing two flock sizes of 23 week old pullets on hysteria and certain production traits. Poult. Sci. 58:778-784.
Statistical Analyses Systems Institute Inc. 1988. SAS Procedures Guide, Release 6.03 edn. SAS Institute Inc., Cary, North Carolina.
Stewart, G. D. and J. G. Dingle. 1997. A preliminary paper on the use of abrasive tape to reduce claw length of layers in cages. In: Proceedings of the Queensland Poultry Science Symposium, Vol. 6, Paper 22, pp. 1-5.
Tauson, R. 1984. Plumage condition in SCWL laying hens kept in conventional cages of different designs. Acta. Agric. Scand. 34:221-220.
Tauson, R. 1985. Mortality in laying hens caused by differences in cage design. Acta. Agric. Scand. 35:165-174.
Tauson, R. 1986. Avoiding excessive growth of claws in caged laying hens. Acta. Agric. Scand. 36:95-106.
Tauson, R. 1996. European alternative housing systems for layershealth, production and environmental considerations. In: Proceedings Australian Poultry Science Symposium 8:65-77.
Tauson, R., T. Ambrosen and K. Elwinger, 1984. Evaluation of procedures for scoring the integument of laying hens. Independent scoring of plumage condition. Acta. Agric. Scand. 34:400-408.
Vanskike, K. P. and A. W. Adams. 1983. Effects of declawing and cage shape on productivity, feathering, and fearfulness of egg type chickens. Poult. Sci. 62:708-711.