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Effect of dietary estradiol-17? on growth performance, body composition and blood indices in Stellate sturgeon, Acipenser stellatus | ||
| Caspian Journal of Environmental Sciences | ||
| مقاله 1، دوره 12، شماره 2، اسفند 2014، صفحه 245-251 اصل مقاله (283.76 K) | ||
| نویسندگان | ||
| H. Khara* 1؛ al et2 | ||
| 1*?, M. Sattari ?, Sh. Nezami ?, S. F. Mirhasheminasab3, S. A. Mousavi3, and M. Ahmadnezhad3 | ||
| 20 | ||
| چکیده | ||
| This study was investigated the effects of dietary estradiol-17? (E2) on growth, body composition and blood indices in Acipenser stellatus. Fish (40.9 ? 1.1 g average initial weight; n = 60 per group) were fed with three different diets containing 0 (control), 25 and 50 mg kg-1 dietary estradiol contents to apparent satiation for seven months. The results suggested that growth rate were decreased as the E2 level was increased. No significant difference was observed in condition factor among dietary treatments. The highest survival rate was observed in fish fed control diet, but was not significantly different among the treatments (P>0.05). Body composition did not show significant changes among dietary treatments. Number of white blood cells and red blood cells, hemoglobin and hematocrit values were significantly decreased as the E2 levels were raised (P<0.05). Plasma biochemical parameters including glucose, total protein, cholesterol, triglyceride, calcium and phosphorus levels were dose dependent with the lowest levels in control with the highest levels in fish treated with 50 mg E2. The results of the present study revealed growth suppression of dietary E2 and changes of blood indices with providing some basic information on the effect of estrogen hormone on physiology of sturgeon. | ||
| کلیدواژهها | ||
| Estradiol؛ Blood indices؛ Body Composition؛ Growth؛ Stellate sturgeon؛ Acipenser stellatus | ||
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