Inclusion of Sorghum in <i>Cyprinus carpio</i> L. Diet: Effects on Growth, Flesh Quality, Microbiota, and Oxidative Status
Cristian-Alin Barbacariu | Gabriela Dumitru | Cristina Mihaela Rimbu | Cristina Elena Horhogea | Lenuța Dîrvariu | Elena Todirașcu-Ciornea | Dana Andreea Șerban | Marian Burducea
This study investigates the impact of including sorghum in the diet of the common carp (<i>Cyprinus carpio</i>) on its growth, blood parameters, meat composition, intestinal microbiota, and oxidative stress. Experimental diets with varying sorghum content (0%—V0 or control, 10%—V1, 20%—V2, and 30%—V3) were administered to carp weighing 43 g initially. Notably, in the 30% variant, sorghum entirely replaced corn and barley in the diet. Chemical analysis of sorghum unveiled a protein content of 14% and a fat content of 3.9%. Sorghum inclusion led to a decline in final body weight and weight gain, particularly notable in the V3 group with 30% sorghum. However, other physiological parameters, such as feed conversion ratio, specific growth rate, and organ indices, remained unaffected. Protein and salt content in carp flesh increased with higher sorghum inclusion levels, while hematological parameters showed minimal variations. Analysis of the intestinal microbiota revealed increases in both aerobic and anaerobic bacterial populations with sorghum inclusion. Furthermore, sorghum concentration inversely correlated with glutathione levels and positively correlated with malondialdehyde content, indicating a disruption of antioxidant defense mechanisms and elevated oxidative stress.
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