- Jun 3, 2021
I was browsing through a list of "top" hatcheries in the states a while back just exploring breeds and characteristics listed by each hatchery. Ran across one (based in Wisconsin I think) that offered free beak trimming, posted right up front. Nope nope nope nope nope. Not buying from them EVER.I located a summary of the pain study. I can't get the entire article to link to it. Here is the summary.
Neuroma formation and abnormal afferent nerve discharges after partial beak amputation (beak trimming) in poultry
SummaryFollowing partial amputation of the beak recordings were taken of the electrical activity from single afferent fibers of the intramandibular nerve. A total of 192 single afferent fiber units were isolated of which 47 were classified as nociceptors, with an abnormal pattern of discharge, and 89 were abnormal spontaneously active units. Following amputation neuromas were developing by 15 days after surgery and they were well formed by 20 to 30 days. The presence of neuromas together with abnormal spontaneous activity originating from them raise serious welfare questions concerning beak trimming.
Additional info from BY Bob
This neuroma formation is the same as what occurs in human amputees that complain of chronic and acute pain as well as phantom limb syndrome. It is highly likely that de-beaked chickens suffer the same effects.