Effects of aflatoxin B₁on reproductive performance of farmed Nile tilapia

Abstract

This study evaluated the effect of dietary aflatoxin B1 (AFB1) on growth, milt and egg quality in matured Nile tilapia (Oreochromis niloticus). Triplicate groups of Nile tilapia (initial body weight 24.1 ± 2.6 g) were fed with either of four diets (Diets 1 to 4) designed to contain 0, 20, 200 and 2000 μg AFB1 kg−1 diets for 24 weeks. After 24 weeks of AFB1 exposure, growth was significantly (P <0.05) different between the control and the AFB1 exposed treatments in both sexes. No significant differences were observed in 17β-oestradiol, absolute fecundity, oocytes volume and diameters between AFB1 exposure groups and the control group. However, we observed a significant reduction in relative fecundity and gonad somatic index (GSI) in females fed 2000 μg AFB1 kg−1 diet. On the other hand, we observed significant differences (P <0.05) in gonadosomatic index (GSI), testosterone, milt count and motility between males in the control group and AFB1 treatments. We conclude that rearing Nile tilapia with aflatoxin-contaminated diets for a prolonged period affects milt quality, fecundity (at higher doses) and growth performance. This implies that for optimal seed production, provision of aflatoxin free diets should be part of the management practices in Nile tilapia hatcheries.

Impacts of astaxanthin-enriched Paracoccus carotinifaciens on growth, immune responses, and reproduction performance of broodstock Nile tilapia during winter season

“…In male tilapia, milt parameters were collected before and after the experimental diet trial (8 weeks). The measurement followed the method described by (Marijani et al 2019). Milt volume was randomly selected and collected from males by using hand stripping.…”

Ameliorative effect of dietary lipopolysaccharides on Oreochromis niloticus juveniles submitted to aflatoxin B1‐induced oxidative stress and bacterial challenge

“…AFB1 was provided by the Sigma-Aldrich Chemical Co. (St. Louis, MO, USA). AFB1 was added up at a 200 ppb (μg/kg) concentration to the diet in the treated groups (Marijani et al, 2019). A stock solution of LPS (Escherichia coli stereotype 0111: B4; Sigma) was rendered in physiological saline (Burnstock, 1958).…”

Caffeic acid mitigates aflatoxinB1‐mediated toxicity in the male rat reproductive system by modulating inflammatory and apoptotic responses, testicular function, and the redox‐regulatory systems

“…Typically, decreases in steroidogenesis is a feature AFB 1 ‐mediated toxicity to the reproductive system including spermatogenesis (Supriya et al, 2014), quantity, quality, and morphology of sperm due to aflatoxicosis (Kourousekos & Theodosiadou, 2018). It has also been shown to negatively influence the concentrations of hormones, causing hormonal disruptions and toxicity to the cells (Ortatatli et al, 2002) and impair experimental animals’ sexual development and behavior (Shuaib et al, 2010; Kourousekos et al, 2016; Marijani et al, 2019). The toxicity of AFB 1 is not limited to the reproductive system.…”