In this research, effects of Zilpaterol hydrochloride as a beta-2 agonist were investigated on color traits, chemical compounds (protein, fat, ash and dry matter contents) and some of consumer palatability ratings (cooking loss, tenderness, flavor, meat off flavor and general acceptability) of longissimus muscle (LM) in Mahabadi castrated male kids. In this study 16 kids with 23± 1.84 kg l...