Orange Peel Waste Improved the Growth Performance, Feed Utilization, Oxidative Stress, and Hematological Parameters of Labeo rohita

Abstract

Expensive and ineffective feed ingredients in fish feed are becoming a major problem for fish growth in the aquaculture industry. Therefore, the experiment was conducted to investigate the utilization of fruit processing wastes as a dietary component in the feed of rohu (Labeo rohita). Four different feed formulations were prepared using commercial diet and supplemented with different levels of orange peel powder (CT= 0%, T1= 15%, T2= 30% and T3= 45%). The experiment was performed in aquariums of dimensions 1x1.5x2 feet, filled with approximately 79 liters of water. Fish were fed two times a day at rate of 3% of their body weight for 35 days. The results showed that the T1, T2, and T3 treatments had almost 104%, 160%, and 68% higher weight gain than that of CT, respectively. The T1 (7.55%), T2 (17.78%), and T3 (4.26%) treatments had a lower feed conversion ratio than that of CT. The T1, T2, T3 treatments had almost 14.18%, 15.27%, and 6.11% lower mean corpuscular hemoglobin concentration than that of CT. The T1 and T2 treatments had almost 7.01% and 17.42% higher total serum protein than that of CT, respectively. The T1 (0.90%) and T2 (6.23%) treatments had higher A/G ratios than that of CT, respectively and T3 (0.01%) had lower A/G ratio than that of CT. Overall, the dietary supplementation of 30% orange peel improved growth performance, feed utilization, oxidative stress, and hematological parameters in Labeo rohita.