The effects of long-term thyroxine administration on hematological, biochemical and immunological features in sterlet sturgeon (Acipenser ruthenus)

This study examined the effects of thyroxine (T4) on hematological indices, immune parameters and the stress markers of female sterlet sturgeon. Adult broodstock (708 ± 37 g) were assigned to three groups each consisting of ten females. Fish were injected with coconut oil (control), 1 mg T4 kg body weight−1 in coconut oil (T1) or 10 mg T4 kg body weight−1 in coconut oil (T10). Injections were given intraperitoneally four times over a 170-day …