Changes of hormone and metabolic parameters of White shrimp broodstock, Litopenaeus vannamei, fed with different levels of 17 beta-estradiol

Document Type : Original Article

Authors

1 Department of Fisheries, Faculty of Agriculture Science and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran.

2 Department of Fisheries, Gorgan University of Agricultural Sciences and Natural Resources, Iran.

3 Fisheries Department, Faculty Natural Resources, Islamic Azad University, Bandar Abbas Branch, Bandar Abbas, Iran.

Abstract

The purpose of this study was to find the role of 17 beta-estradiol on metabolic parameters and steroid hormones of Litopenaeus vannamei hemolymph . Shrimp with an average weight of 40.18±2.46 g received 0, 20, 40 and 60 mg/kg levels (E0, E20, E40 and E60) in the diet for 25 days. After adaptation to the rearing conditions, 80 shrimps were placed in 4 treatments (each with 2 replications). The results showed no significant changes in the majority of the parameters analyzed, except for the Haemocyanin and protein in the plasma (P>0.05). The highest protein, cholesterol and glucose levels in E40 treatment were 7.22±0.30, 97.65±8.70 and 80.78±4.35 mg/dL, respectively. There was no significant difference in the amount of steroid hormones between treatments with other treatments (except E40 treatment) (P>0.05). Based on the results, it can be reported that adding 40 mg of hormone to broodstock commercial feed improves hormonal activities of L. vannamei. 

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