دومین کنگره ملی گیاهان دارویی , 2013-05-15

Title : ( STUDY ON DIFFERENT LEVELS OF ANNATTO SEED MEAL (BIXA ORELLANA) IN THE DIET ON SOME BIOLOGICAL INDICES OF RAINBOW TROUT (ONCORHYNCHUS MYKISS) )

Authors: Omid Safari , M. Mehraban Sang Atash ,

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Abstract

In the recent years, identification and optimization of feed supplements used in the aquafeed industries as stimulastors of growth and immune system and color quality of fillet are considered as an important area in the nutrition of aquatic species. In this regard, astaxanthin (AX) is the most popular synthetic pigments. High cost, low bioavailability and variable purity have limited the use of AX in the industry [1]. In the present study, the potential of annatto (AN) seed meal as a natural pigment in the diet of rainbow trout (30 ± 2.7 g) was compared to that of AX based on the some biological indices including growth performance (specific growth rate, %/day), immunological indices (lysozyme and complement) and fillet quality. Five inclusion levels (mg/Kg) of AN (50, 100, 150, 200 and 250) and AX (30, 40 and 65) together with a basal diet (control) were used in the diet for 63 days. Results showed that immunological indices including lysozyme and complement levels of the serum of fish fed the diet containing 200 mg/Kg increased (10.8 µg/ml and 13.7 unit/ml, respectively) significantly (P≤0.05) compared to all inclusion levels of AX (mean: 9.9 µg/ml and 11.8 unit/ml, respectively) and control diet (9.5 µg/ml and 10.1 unit/ml, respectively). Using 200 mg/Kg AN increased the final weight (187.8 ± 3.8 g) compared to all inclusion levels of AX (mean:128.5 ± 3.1 g) and control group (121.5 ± 3.1 g). Specific growth rate fish fed the diets containing 200 mg/Kg AN (2.4%/day) increased significantly (P≤0.05) compared to all inclusion levels of AX (mean: 1.9%/day) and control diet (1.8%/day). The color quality of fillets (based on the L.a.b indices) of fish fed the diets containing different levels of AN improved significantly (P≤0.05) compared to other treatments. Based on the results, using 200 mg/Kg AN in the diet of rainbow trout was possible.

Keywords

, Rainbow trout, Annatto, Astaxanthin, Biological Indices
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@inproceedings{paperid:1034843,
author = {Safari, Omid and M. Mehraban Sang Atash},
title = {STUDY ON DIFFERENT LEVELS OF ANNATTO SEED MEAL (BIXA ORELLANA) IN THE DIET ON SOME BIOLOGICAL INDICES OF RAINBOW TROUT (ONCORHYNCHUS MYKISS)},
booktitle = {دومین کنگره ملی گیاهان دارویی},
year = {2013},
location = {تهران, IRAN},
keywords = {Rainbow trout; Annatto; Astaxanthin; Biological Indices},
}

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%0 Conference Proceedings
%T STUDY ON DIFFERENT LEVELS OF ANNATTO SEED MEAL (BIXA ORELLANA) IN THE DIET ON SOME BIOLOGICAL INDICES OF RAINBOW TROUT (ONCORHYNCHUS MYKISS)
%A Safari, Omid
%A M. Mehraban Sang Atash
%J دومین کنگره ملی گیاهان دارویی
%D 2013

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