LEVEL OF DIGESTIBILITY AND ABSORPTION OF CARP (Cyprinus carpio L.) SEED FEED USING A COMBINATION OF GLUTAMINES AND PROBIOTICS

Abstract

This study aimed to determine the best combination for improving feed digestibility and nutrient absorption in common carp fry. The study employed a factorial Completely Randomized Design (CRD) with two factors: glutamine at different levels (0% /kg feed, 1%/kg feed, 2%/kg feed, and 3%/kg feed ) and probiotics at different levels (0 ml/kg feed, 5 ml/kg feed, 10 ml/kg feed, and 15 ml/kg feed).The results showed that the simultaneous interaction between glutamine and probiotic supplementation had a significant effect (P < 0.05) on the overall feed consumption rate. Based on the findings, the best treatment combination was 2% glutamine supplemented with 10 ml probiotics per kg of feed. This combination produced the following results: Feed Consumption Rate (FCR) of 142.66 ± 2.36 g, Protein Digestibility (PD) of 94.13 ± 1.05%, Feed Utilization Efficiency (FUE) of 93.83 ± 9.89%, Protein Efficiency Ratio (PER) of 2.93 ± 0.31%, and Protein Nutrient Retention (PNR) of 156.69 ± 16.51%.Therefore, the supplementation of 2% glutamine combined with 10 ml/kg feed probiotics is recommended as an effective nutritional strategy to enhance feed utilization efficiency and optimize the growth performance of common carp fry.