A feeding trial has been conducted to evaluate the effects of dietary nucleotide (NT) on growth performance and stress resistance of fry kutum (Rutilus kutum Kamenskii, 1901). A basal diet supplemented with 0 (control), 0.3, 0.5 and 0.7 g NT kg-1 have been formulated for four experimental diets. After 8 weeks of feeding trial, growth parameters were evaluated and then fish has exposed to osmoti...

 Concentration of heavy and toxic metals Cu, Zn, Cd, Pb and Hg were determined in liver and muscles of Rutilus frisii kutum and their relationships with growth parameters (length, age, condition factor) and hepatosomatic index were examined. Thirty-six fish samples were collected from February through March 2009 caught by beach seine in the southwest parts of the Caspian Sea. Atomic absorption ...

 Concentration of heavy and toxic metals Cu, Zn, Cd, Pb and Hg were determined in liver and muscles of Rutilus frisii kutum and their relationships with growth parameters (length, age, condition factor) and hepatosomatic index were examined. Thirty-six fish samples were collected from February through March 2009 caught by beach seine in the southwest parts of the Caspian Sea. Atomic ab...

Kutum, Rutilus frisii kutum, is an commercially important fish in the Caspian Sea. The fish enters the rivers leading to the Caspian Sea for spawning. One of these rivers is Shiroud River. In the artificial propagation process of Kutum, different factors are involved in quality and quantity of female broods eggs and also in the best temperature and migration time for spawning. The influence of ...

To assess changes of gonad development and sex steroids hormones of R. frisii kutum, broodfish were captured during spawning season 2010 (March-April) and induced intramuscularly with following hormone treatments: single injections of 1 μg kg b.w. LHRH-A2, combination of LHRH-A2 with two dopamine antagonists as follows: 1 μg kg b.w. LHRH-A2 + 5 mg kg-1 b.w. PIM, 1 μg kg b.w. LHRH-A2 + 2.5 mg kg...