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Unformatted text preview: There is no medial pit lobe so ppl were wondering how they MSH is produced. It is from eye and diff part of brain etc. . How is produced n released? : 1. Diet ( amino acid intake) : Tyrosine and phenalynin content . The feather must have innate genetic capacity for it. 2. Hormones: Testosterone . Castration of male house sparrows horn colored beak. Treatment with testosterone during molt larger badges Eggs treated with testosterone yielded males with larger badged. HIGHER T MELANIN COLORING ESTROGEN: treating adult males with estrogen eliminates glossy black plumage. Regeneration of female like reddish brown plumage....
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- Spring '09
- Poul, Total Melanin content, melanin hormone production, MELANIN COLORING ESTROGEN