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Research Article: Dietary thiamine supplementation for beluga sturgeon (Huso huso) broodstock: Impacts on sex steroids, reproductive performance, glucose metabolism, and egg quality
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M. Mohseni *1   , T. Sohrabi2 , F. Mortezaei3 , M.H. Seyed Hassani2 , R. Ghorbani Vaghei2 , Z. Pajand2 , A. Yousefi Jourdehi2 , F. Fadakar Masouleh2 , J. Jalilpour2 , M. Ghelichpour4 |
1- International Sturgeon Research Institute, Iranian Fisheries Science Research Institute, Agricultural Research Education and Extension Organization (AREEO), P.O. 41635-3464, Rasht, Iran , mahmoudmohseni73@gmail.com
2- International Sturgeon Research Institute, Iranian Fisheries Science Research Institute, Agricultural Research Education and Extension Organization (AREEO), P.O. 41635-3464, Rasht, Iran
3- Fisheries Department, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, P.O. Box 1144, Guilan, Iran
4- Inland Waters Aquatics Resources Research Center, Iranian Fisheries Sciences Research Institute, Agricultural Research Education and Extension Organization (AREEO), P.O.139, Gorgan, Iran |
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Abstract: (16 Views) |
| The present study examined the effects of dietary thiamine (vitamin B1) on the physiological performance and egg quality of beluga sturgeon (Huso huso) broodstock. A total of 96 beluga sturgeon broodstocks (mean weight 39.65 ± 6.01 kg) were randomly distributed to 12 tanks and received diets containing 0 (control, C), 5 (TH1), 10 (TH2), and 20 (TH3) mg thiamine kg-1 for 24 months. After the feeding trial, plasma sex steroids, glucose-6-phosphate dehydrogenase (G6PD) enzyme activity, reproductive parameters, and the vitamin content of the egg were assessed. Plasma levels of progesterone, testosterone, and 17β-estradiol were significantly higher in the TH3 group than in the others (p<0.05). G6PD enzyme activity was significantly elevated in the TH2 and TH3 groups compared to the control group (p<0.05). The control group showed a significant increase in the egg number compared to the TH3 group. The egg diameter significantly increased in the TH3 group (p<0.05), while working and relative fecundities remained unaffected (p>0.05). Egg vitamin content significantly augmented in all three thiamine-fed groups compared to the control (p<0.05). This study concluded that dietary 20 mg thiamine kg-1 improved physiology, ovarian development, and egg quality of beluga sturgeon broodstock. |
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| Keywords: Egg quality, Great sturgeon, Physiology, Reproduction, Vitamin B1 |
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Full-Text [PDF 463 kb]
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Type of Study: Orginal research papers |
Subject:
aquaculture
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