Paper Information

Journal:   JOURNAL OF AQUACULTURE DEVELOPMENT   WINTER 2018 , Volume 11 , Number 4 #B0043; Page(s) 79 To 89.
 
Paper: 

DETERMINING OF CARETONOID ASTHAXANTHIN RESIDUE IN DIFFERENT STAGES OF EMBRYOS GROWTH AND DEVELOPMENT AND LARVAE AND IT, S EFFECT ON SOME IMMUNE INDICES IN FARMED STERLET (ACIPENSER RUTHENUS)

 
 
Author(s):  FADAKAR E., BAHMANI M.*, YOUSEFI JOURDEHI A.
 
* DEPARTMENT OF FISH PHYSIOLOGY AND BIOCHEMISTRY, INTERNATIONAL STURGEON RESEARCH INSTITUTE, AGRICULTURAL RESEARCH EDUCATION AND EXTENSION ORGANIZATION (AREEO), RASHT, IRAN
 
Abstract: 

This study was carried out with the aim of detecting the effects of carotenoid astaxanthin on immunonological indices and determining caretonoid residue levels in Acipenser ruthenus.4 doses of astaxanthin including 0 (control), 15 mg/kg, 45 mg/kg and 75 mg/kg were added to fish diet. A total of 48 pre - broodstock of Acipenser ruthenus (with mean weight 600 ± 14.5 g) were selected and transferred to fiberglass 500 lit tanks and fed with diet containing different levels astaxanthin during 6 months. After reproduction, the residue levels of astaxanthin were monitored during embryos development. Based on results, the most percentage of fertility among different treatments of astaxanthin was observed at concentration 75 mg/kg (P<0.05). Results showed that hatching rate of eggs in control was lower significantly than concentrations 45 and 75 mg/kg (P<0.05). Minimum residual level of total carotenoid and astaxanthin observed at stage PY and showed significant difference compared to other treatments (P<0.05). Minimum residual levels of cantazantine and Beta -carotene observed at stage PY and showed significant difference compared to ovulation stage (P<0.05). Lysozyme levels showed no significant difference compared to control (P>0.05). IgM levels at concentrations 45 and 75 mg/kg was lower significantly compared to 15mg/kg (P<0.05). Results showed C4 levels at concentration 45 mg/kg was lower significantly compared to other treatments (P<0.05). Based on results, C3 levels at concentrations 45 and 75 mg/kg was lower significantly compared to other treatments (P<0.05). By notice to obtained results, Adding 75 mg/kg to diet improved immunity efficiency compared to control. So it suggests adding astaxanthin in Acipense r ruthenusdiet.

 
Keyword(s): ACIPENSER RUTHENUS, ASTAXANTHIN, ARTIFICIAL PROPAGATION, GROWTH INDICES, IMMUNITY
 
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