Effect of Broccoli, Brassica oleracea extract on growth performance and some blood parameters of common carp, Cyprinus carpio

The herbextract ofBroccoli,Brassica oleraceawas used to feed common carp(19.75±0.057 g) at four incremental levels of 0, 1, 2, and 3% of the diet for 56days. Fish were fed twice a day at a rate of 3% diets containing 32.7-33.7% crude protein and digestible energy (16.037-16.595Mj/Kg). At the end of the study, the groups fed 2% broccoli extract were significantly better in weight gain (3.36±0.16 g), relative growth rate (17.02±0.77%), specific growth rate (0.30±0.01% day), food conversion ratio (7.74±0.39) and food conversion efficiency (12.93±0.65%). In terms of hematological parameters, albumin showed significant enhancements in 1, 2, and 3% broccoli extract (P≤0.05). However,globulinlevels were not affected by broccoli extract inclusion (P≥0.05). Total protein and A/G ratio showed significant enhancements in the 2% broccoli extract group (P≤0.05). According to the findings, using 2% broccoliextract was the best option for growth and blood profile in common carp rearing. Therefore, the present study recommends adding 2% of broccoli extract to improve nutrient efficiency, growth performance, and hematological parameters in C. carpiofingerlings.