Figure 1. Treatment-related differences in beak length in White
Leghorn chicks trimmed at 1 d of age. a) Change in beak length in
control birds and birds in the infrared beak treatment (IR-BT) group
from immediately posttreatment to 1 wk posttreatment. b) Different
beak regrowth rates after hot-blade beak trimming (HT-BT) and IRBT
from wk 1 to 10. Data are presented as mean ± SEM (n = 12). d
= day posttreatment; wk = week posttreatment.