Comparison of the effects of phytoestrogens genistein and Equol levels of sex steroid hormones in farmed female beluga (Huso huso)

Document Type : Physiology (Animal)

Authors

1 Department of Fisheries, Faculty of Fisheries and Environment, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran

2 Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran

3 Department of physiology and histology, Dadman international sturgeon research institute, P.O.Box: 3464-41635, Rasht, Iran

Abstract

The  present  study  was  carried  out  with  aims  at  dettecting  the  effects  of  different concentrations  of  soy  -  phytoestrogens  Genistein  (GE)  and  equol  (EQ)  on    farmed  female beluga 5 - year - old during a year. Testosterone (T) level was 0.3 ± 0.06 ng/ml at the start and reached to a maximum (21.04 ± 1.91 ng/ml) at EQ 0.4 g/kg at the end of experiment (P<0.05). 17β - estradiol (E2) levels increased significantly at some concentrations of GE and EQ at the end  than  start  and  reached  to  a  maximum  (12.6  ±  1.04  ng/ml)  at  EQ  0.4  g/kg  at  the  end  of experiment  (P<0.05).  17α-  hydroxy  progesterone  (17α  -  OHP)  showed  no  significant difference.  In  conclusion,  equol  at  concentration  0.4  g/kg  showed  more  powerful  positive effects on testosterone (T) and estradial (E2) than other concentrations of equol and genistein in  farmed  female  Huso  huso.  Comparatively,  EQ  showed  more  estrogenic  effects  on  ovary development in comparison to GE concentrations.  

Keywords

Journal of Animal Environment
Volume 5, Issue 2
September 2012
Pages 51-75

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