Open AccessEffect of Dietary Carotenoids on Reproducers of Amazon River Prawn Macrobrachium amazonicum. Part 2: External Coloration, Accumulation of Astaxanthin in Body Tissues and Pigment Stability in Feed
Author(s) -
Daniel Pereira da Costa,
Claudiana de Lima Castilho,
Uclédia Roberta Alberto dos Santos,
Tainára Cunha Gemaque,
L. F. Damasceno,
Jô de Farias Lima,
Kleber Campos Miranda Filho
Publication year - 2022
Publication title -
journal of agricultural studies
Language(s) - English
Resource type - Journals
ISSN - 2166-0379
DOI - 10.5296/jas.v9i2.18159
Subject(s) - astaxanthin , prawn , carotenoid , pigment , food science , biology , macrobrachium , macrobrachium rosenbergii , botany , chemistry , fishery , crustacean , decapoda , organic chemistry
The 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 astaxanthin 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.