Volume 3, Issue 3 (2014)
JFST 2014, 3(3): 55-66 |
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Effect of thiamine injection on reproductive index of sterlet sturgeon (Acipenser ruthenus). JFST 2014; 3 (3) :55-66
URL: http://jfst.modares.ac.ir/article-6-2791-en.html
URL: http://jfst.modares.ac.ir/article-6-2791-en.html
Abstract: (10595 Views)
The effect of thiamine injection at doses of 0 (T0), 5 (T5) and 50 (T50) mgkg-1 body weight on reproductive performanceof 45 females (698.7 ± 8.9 g) sterlet sturgeon (Acipenser ruthenus) was investigated in fiberglass tanks. Fish were fed practical diets supplemented with 1 g/kg amprolium hydrochloride (as the anti-thiamine) once a day for 5-month before spawning. At the end of 5 months trial, no significant difference was observed in germinal vesicle migration among treatments (p>0.05). Estradiol level was not significantly different (p>0.05), but testosterone was affected by injection of thiamine (p<0.05). Fecundity and latency time was not significantly different (p>0.05) among the treatments, but number of eggs per gram and hatching rate were significantly different (p<0.05). According to the results, injection of 50 mg thiamine hydrochloride per kg body weight had a positive effect on reproductive performance and could reduce the negative impacts of anti thiamines in natural environment.
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