Fig 4. Hormonal variables of laying hens fed diets containing different trace mineral sources.
A: Prog—progesterone; B: FSH—Follicle Stimulating Hormone; C: LH—Luteinizing Hormone; D: Cortisol; E: T4 –Total Thyroxine; F: T3 –Total Triiodothyronine; G: E2 –Estradiol; IM: Inorganic Mineral; AACM: Amino acids-mineral complexed. a, b Means lacking a common superscript letter differ, P < 0.05.