The Effect of <i>Moringa oleifera</i> Leaves Powder Increasing the Productive Characteristics of Common Carp (<i>Cyprinus carpio</i> L.) Exposed to Chlorpyrifos

Pesticides are a major global problem because of their effects on living organisms and their bodily functions. This study was conducted from August 25, 2022, to October 25, 2022. It aimed to know the toxic effects of Chlorpyrifos on common carp (Cyprinus carpio L.), and the potential of Moringa oleifera leaves to reduce this toxicity by evaluating their effect on growth performance in fish exposed to the pesticide. The LC50 for Chlorpyrifos has been estimated at 0.60 mg/L over 96 hours. Use 1/10 of the LC50 in the pesticide toxicity test treatment; Moringa leaf powder (MOL) was also added to the food (ready-made commercial feed granules) in three proportions: 5, 10, and 15 g/kg, in addition to using feed the control treatment. During the experiment, the fish weight rates (WR), weight gain (WG), daily weight rate (DGR), relative growth rate (RGR), and specific growth rate (SGR) were studied in the exposed fish to Moringa and/or Chlorpyrifos. The results indicated that all growth indicators studied decreased with exposure to Chlorpyrifos CPF. The study achieved significant results regarding the use of Moringa oleifera leaves in treatment, as treatment with leaf powder improved growth performance at 10 g/kg and 5 g/kg From MO respectively. Adding 15 g/kg of Moringa leaves also reduced growth performance. We concluded through the study that using moderate proportions of Moringa leaves has anti-toxic effects, and raising these proportions has negative effects due to an increase in anti-nutritional compounds. Therefore, we suggest that the active substances be extracted and used as additives for fish feed.