Some Blood Parameters of Albino and Normal Pigmented Rainbow Trout with Short Term Exposure to a Bath of Malachite Green

Abstract

The purpose of this research was to determine some haematological parameters of adult albino and normally pigmented rainbow trout (Oncorhynchus mykiss, Salmonidae) individuals after short-term exposure to a bath of malachite green. At the conclusion of the study, significant differences were observed in haemoglobin (Hb), erythrocyte (RBC), leukocyte (WBC) levels as well as mean cell volume (MCV) and mean cell haemoglobin (MCH) (p<0.05) between control and experiments groups. However no significant differences were found between the two groups in the levels of pH and Mean cell haemoglobin concentration (MCHC) (p>0.05) during exposure to the malachite green. It was also determined that the short term immersion in the bath of malachite green caused a significant increase in mean cell volume (MCV), mean corpuscular haemoglobin (MCH), mean corpuscular haemoglobin concentration (MCHC), a slight decrease in haemoglobin (Hb) and haematocrit (Ht); and a pronounced decrease in red blood cell (RBC) and white blood cell (WBC) levels