Haematological indices study of juvenile Labeo rohita (Hamilton-1822) fed at varying protein: Energy ratios

Abstract

Present experiment was pilotedin triplicate to study the haematological indices in Labeo rohita (Hamilton-1822) fed at varying Protein: Energy ratios. Ten days old fingerlings of average weight 0.43±0.09(g) and length 3.15±0.28(cm) were collected, acclimatized and shifted in Hapas (8x6x3 ft.), fed @ 10% wet body weight for two weeks and 5% up to the end of experiment. Five fishes from each group were randomly selected at the end of 90 day trial for haematological studies. The blood indices MCV, MCH, MCHC, WBC, LYM, MON, GRA, RBC, HGB, RDW, PLT and MPV were studied. Linear regression analysis was applied to study the statistical relationship. T1, T2 and T0 were indicating isometric growth. Fish fed at low Protein: Energy ratios showed better health status. Fish fed with T0 and T4 were more stressed. Thus, low protein diets are not only cost effective but also indicate good health status of fish.