TY - JOUR ID - 4637 TI - Effects of different levels of dietary taurine amino acid on Rosy Barb (Pethia conchonius) pigmentation JO - Aquatic Animals Nutrition JA - JANB LA - en SN - AU - Nejatizadegan, Fereshteh AU - Paykan Heyrati, Fatemeh AU - Dorafshan, Salar AU - Morshedi, Vahid AD - Department of Natural Resources, Isfahan University of Technology, Isfahan, Iran AD - Department of Natural Resources, Isfahan University of technology, Isfahan, Iran AD - Department of Natural Resources, Persian Gulf University, Bushehr, Iran Y1 - 2020 PY - 2020 VL - 6 IS - 2 SP - 39 EP - 48 KW - Taurine KW - Fat metabolism KW - Pigment KW - Marketability KW - Ornamental fish KW - Colorimetric assay DO - 10.22124/janb.2021.16792.1091 N2 - Taurine (2 amino ethane sulfonic acid), is a semi-essential amino acid and an end product of the sulfur amino acid metabolism. The aim of this study was improving Rosy barb (Pethia conchonius) pigmentation. The fish (average weight 32 ± 7 mg and length 12.83 ± 1.82 mm) were divided into five different groups including control (basic diet without taurine and astaxanthin) and four different levels of taurine (0, 100, 250 & 500 mg/kg diet) with constant amount of astaxanthin (100 mg/kg diet) and fed for 60 days. The pigmentation analysis was done using digital camera photography and whole body biochemical carotenoid analysis and showed that the fish fed on 100 + 250 mg/kg of astaxanthin & taurine respectively had the highest levels of pigmentation. Adding taurine up to 250 (mg/kg diet) caused increasing total carcasses lipid, plasma triglyceride, cholesterol, LDL & HDL levels in compression to the fish fed on control diet (p<0.05). It could be concluded that dietary taurine supplementation could affect fish lipid metabolism and improve astaxanthin absorption, which lead to better pigmentation in Rosy barb. UR - https://janb.guilan.ac.ir/article_4637.html L1 - https://janb.guilan.ac.ir/article_4637_21c75c42199b6632fd8747d72e2b9225.pdf ER -