Table 1. Mean (± SD) sex male ratio, testosterone levels, estradiol levels, absolute length growth, absolute weight growth, specific growth rate, survival rate, and glucose levels of freshwater crayfish (Cherax quadricarinatus) at the immersion treatment for 40 days

Parameter	T1 (MT 2 mg/L)	T2 (ETT 0 mg/L)	T3 (ETT 10 mg/L)	T4 (ETT 15 mg/L)	T5 (ETT 20 mg/L)
Sex male ratio (%)	54.48 ± 2.07^ab	38.00 ± 2.96^c	51.13 ± 3.99^b	53.19 ± 1.18^ab	56.22 ± 1.10^a
Testosterone level (ng/mL)	1.019 ± 0.12^a	1.012 ± 0.12^a	0.978 ± 0.03^a	1.028 ± 0.22^a	0.973 ± 0.03^a
Estradiol level (ng/mL)	259.26^a	140.15^a	259.58^a	240.97^a	151.32^a
Absolute length growth (mm)	24.36 ± 1.01^a	25.68 ± 3.23^a	25.05 ± 1.76^a	24.95 ± 1.28^a	24.87 ± 0.88^a
Absolute weight growth (g)	1.177 ± 0.14^a	1.325 ± 0.25^a	1.406 ± 0.17^a	1.399 ± 0.19^a	1.377 ± 0.12^a
Specific growth rate (%)	5.40 ± 0.19^a	5.58 ± 0.32^a	5.69 ± 0.21^a	5.68 ± 0.23^a	5.66 ± 0.15^a
Survival rate (%)	88 ± 4.0^a	84 ± 4.0^a	81.33 ± 10.0^a	82.67 ± 6.11^a	85.33 ± 6.11^a
Glucose level (ng/mL)	124.24 ± 57.2^a	145.42 ± 27.3^a	156.75 ± 32.1^a	164.68 ± 42.5^a	116.40 ± 29.7^a

Means with different letters in the same row differ significantly (p < 0.05).
MT, 17α-methyltestosterone; ETT, Tribulus terrestris extract.