Table 4.
Hepatosomatic, gonadosomatic index, steroid sex hormone levels of gilthead seabream male or female broodstock of high (HG) or low growth (LG) groups before feeding the experimental diets. Male-HG (n = 6); Male-LG (n = 7); Female-HG (n = 6) and Female-LG (n = 5).
| Broodstock Sex | Parameters | High Growth (HG) | Low Growth (LG) |
t-Test (p Value) |
|---|---|---|---|---|
| Male | Testosterone (ng/mL) | 2.3 ± 0.8 | 2.3 ± 1.4 | 0.989 |
| 11 Keto-testosterone (ng/mL) | 0.2 ± 0.1 | 0.4 ± 0.3 | 0.243 | |
| GSI% | 7.8 ± 2.5 a | 2.0 ± 2.4 b | 0.001 | |
| HSI% | 1.0 ± 0.2 | 1.5 ± 0.9 | 0.211 | |
| Female | Testosterone (ng/mL) | 0.8 ± 0.2 | 0.7 ± 0.4 | 0.649 |
| 17β-estradiol (ng/mL) | 1.0 ± 0.3 | 0.8 ± 0.3 | 0.337 | |
| GSI% | 6.3 ± 9.7 | 5.1 ± 4.8 | 0.805 | |
| HSI% | 1.7 ± 0.4 | 1.4 ± 0.4 | 0.236 |
Different superscripts in each row indicate significant differences among HG or LG broodfish groups (p < 0.05, independent sample t-test). GSI (%) (gonadosomatic index) = (Gonad weight, g/weight of fish, g) × 100; HSI (%) (hepatosomatic index) = (Liver weight, g/weight of fish, g) × 100.