01755naa a2200241 a 450000100080000000500110000800800410001910000200006024502230008026000090030352009410031265000110125365000130126465300150127765300240129270000230131670000250133970000190136470000210138370000190140470000250142377300650144821367042021-11-28       2021    bl uuuu     u00u1 u    #d1 aCOSTA, D. P. da  aEffect of dietary carotenoids on reproducers of Amazon River prawn Macrobrachium amazonicum. Part 2bexternal coloration, accumulation of astaxanthinin dody tissues and pigment stability in feed.h[electronic resource]  c2021  aThe color is an important factor to distinguish the commercialized Amazon river prawns. The accumulation of pigments in the body can vary according to the prawn?s diet. In this work, ethanolic extracts of ?buriti? and annatto rich in pigments were obtained and tested comparatively with synthetic astaxanthin in the feeding of adults of Macrobrachium amazonicum, together with a control group without pigments and a newly captured wild group. Levels of body pigments were measured using UV reflective spectroscopy and external staining by colorimetry. Differences were observed in the accumulation of astaxan thin in body tissues, differences in saturation between genders and that annatto extract has greater stability in the feed after water immersion (P˂0.05). Further studies are recommended to verify the ideal dosage of natural pigments in relation to synthetic astaxanthin that benefits the productive development of prawns.  aBuriti  aCamarão  aSupplement  aTissue accumulation1 aCASTILHO, C. de L.1 aSANTOS, U. R. A. dos1 aGEMAQUE, T. C.1 aDAMASCENO, L. F.1 aLIMA, J. de F.1 aMIRANDA FILHO, K. C.  tJournal of Agricultural Studiesgv. 9, n. 2, p. 57-72, 2021.