Singh, I.J.Ratnakar, Sneha2018-07-192018-07-192016-07http://krishikosh.egranth.ac.in/handle/1/5810061038Some haematological and biochemical parameters of the fish Nain, Cirrhinus mrigala, collected from Instructional Fish Farm, College of Fisheries, G. B. Pant University of Agriculture and Technology, Pantnagar India were studied from October 2015 to June 2016. Variations in haematological parameters such as haemoglobin, Total Erythrocyte Count, Total Leucocytes Count, haematocrit, Mean Corpuscular Volume (MCV) and Mean Corpuscular Haemoglobin Concentration (MCHC), and Biochemical parameters total protein, albumin and globulin of this fish were compared in relation to season, sex and reproductive status. Observations showed that there was significant difference between these parameters and the season. The results indicated that the blood parameter levels of most of the parameters were significantly different in both the sexes in summer (pre-spawning season) than other seasons except Mean Corpuscular Haemoglobin (MCH) and Mean Corpuscular Volume in males (MCV) value (P <0.05). The number of total leukocyte was found to be higher in female fish especially in pre spawning season (summer) but the levels of Total Erythrocyte Count, haemoglobin, haematocrit MCV and MCH values were high in male fish during over all study period. However, there was no difference in MCH and MCHC values between the sexes and seasons throughout the study period. This might be due to the reason that seasons of sampling and physiological cycles were changing during these months. No significant difference was found in haematological parameters in both male and female fishes (P˃0.05). In conclusion, the present study showed that the haematological and biochemical parameters in blood of Cirrhinus mrigala were correlated with the seasons and reproductive status but despite there being contrary differences in the values of these parameters studied in both the sexes of this but the differences remained insignificant.ennullThesis