Beak trimming of poultry should be practiced only when necessary to prevent feather pecking and cannibalism. Only trained and monitored personnel should perform beak trimming, using proper equipment and procedures that minimize pain, prevent excessive bleeding, promote rapid healing and prevent infection. The AVMA encourages the development of alternative practices, including genetic selection, or management of light or nutrition, which may reduce or eliminate the practice of beak trimming.
Welfare Implication of Beak Trimming (PDF)
2015 American Veterinary Medical Association