Age-related haematological changes in Murrah buffalo (Bubalus bubalis) calves.

摘要

The study was conducted to assess the haematological changes in Murrah buffalo calves (Bubalus bubalis). The haematological analysis was conducted in female calves (n=7/group) at ages 30+or-3, 60+or-2, 90+or-2, 120+or-2, 150+or-3, 180+or-3, 210+or-3, 240+or-2, 270+or-2, 300+or-2, 330+or-2 and 360+or-4 days which formed groups 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12, respectively. Results revealed that the red blood cell count, haemoglobin and packed cell volume decreased with age. The changes in erythrocytic indices with respect to age were insignificant. The total leukocyte count did not vary among the various age groups, but significant changes were observed in the differential leukocyte count. The granulocyte: granulocyte ratio steadily decreased from 2.03:1 at 1 month old to 0.48:1 by 12 months old. It is suggested that significant hematological changes in the buffalo calves are observed as the animal mature due to the increased physiological destruction of red blood cells, maturational changes of lymphoid organs or environment induced adaptive changes with increasing age.