Beak Trimming Effects on Performance, Behavior and Welfare of Chickens: A Review

Abstract Beak trimming is a management practice that has long been employed by the poultry industry to reduce the deleterious effects of cannibalism and feather pecking among flockmates of chickens. Most studies of beak trimming have concentrated on the production and economic performance aspects of this practice. Because of the current animal welfare debate, behavioral and physiological responses of animals exposed to this procedure have been examined recently in an effort to measure the effects upon “well being.” These investigations have provided some interesting and useful results. Nevertheless, beak trimming continues to be a sensitive and difficult issue for the poultry industry due to the concerns of individuals who promote animal welfare. The purpose of this article is to review some of the research findings regarding beak trimming of chickens as related to industry usage and the animal welfare debate. Several avenues of research that could prove beneficial to the poultry industry in the future will be discussed.

[1]  J. W. Deaton,et al.  Effect of beak trimming on body weight and feed intake of egg-type pullets fed pellets or mash. , 1987, Poultry science.

[2]  M. Gentle,et al.  The bill tip organ of the chicken (Gallus gallus var. domesticus). , 1986, Journal of anatomy.

[3]  H. Blokhuis,et al.  Effects of beak trimming and floor type on feed consumption and body weight of pullets during rearing. , 1987, Poultry science.

[4]  W. Muir,et al.  Selection and beak-trimming effects on behavior, cannibalism, and short-term production traits in White Leghorn pullets. , 1991, Poultry Science.

[5]  W. Morgan Effect of Day-Old Debeaking on the Performance of Pullets , 1957 .

[6]  J. Craig,et al.  Beak-Trimming Effects on the Behavior and Weight Gain of Floor-Reared, Egg-Strain Pullets from Three Genetic Stocks During the Rearing Period, , 1990 .

[7]  K. Lee,et al.  The effect of Marek's disease vaccination and day-old debeaking on the performance of growing pullets and laying hens. , 1977, Poultry science.

[8]  J. Craig,et al.  Beak trimming and genetic stock effects on behavior and mortality from cannibalism in White Leghorn-type pullets , 1990 .

[9]  S. Ridlen,et al.  Performance of Pullets Debeaked at Various Times During the Laying Year , 1960 .

[10]  D. Robinson Effects of cage shape, colony size, floor area and cannibalism preventatives on laying performance , 1979 .

[11]  M. Gentle Beak trimming in poultry , 1986 .

[12]  J. Craig,et al.  Beak trimming effects on behavior patterns, fearfulness, feathering, and mortality among three stocks of White Leghorn pullets in cages or floor pens. , 1991, Poultry science.

[13]  J. R. Carson,et al.  The Effect of Age at and Methods of Debeaking on Future Performance of White Leghorn Pullets , 1975 .

[14]  M. Gentle,et al.  The effect of beak trimming on food intake, feeding behaviour and body weight in adult hens , 1982 .

[15]  J. H. Quisenberry,et al.  Debeaking in Commercial Broiler Production , 1955 .

[16]  I. Duncan,et al.  The influence of strain and environmental factors upon feather pecking and cannibalism in fowls. , 1972, British poultry science.

[17]  K. Lee Long term effects of Marek's disease vaccination with cell-free herpesvirus of turkey and age at debeaking on performance and mortality of white leghorns. , 1980, Poultry science.

[18]  D. Waddington,et al.  Behavioural evidence for persistent pain following partial beak amputation in chickens , 1990 .