The Effect of Zinc, Shell, and Fishbone Supplementations on Comb Width and Length of Bangkok Rooster

The Bangkok rooster is a prestigious ornamental bird in Indonesia. Zinc and shell have an aromatase blocker effect that results testosterone elevations. Additionally, fishbone contains rich protein for optimum biological functions. Serum regulates comb size the chicken. This study aimed to investigate of natural blockers roosters. experiment divided thirteen roosters into control treatment groups with zinc, fishbone-shell, supplementations. weekly lengthening widening were intervals between week 0 measurement this study. suggested fishbone-shell supplementations escalated lengthening. Fishbone–shell significantly increased second fourth weeks (p < 0.05). significant elongation change group only appeared Otherwise, treatments produced lower Fishbone supplementation caused every uncovered effects shell, on reproductive phenotype