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This study was conducted to determine the baseline data of haematological and biochemical parameters of adult horses in Kaduna, Nigeria. Twenty horses consisting of 10 males and 10 females aged 15 years and above were used for the study. The mean red blood cell counts, packed cell volume and haemoglobin concentration were lower than the mean reference values but fell within the normal range. The mean corpuscular volume and mean corpuscular haemoglobin were higher than those recorded in other veterinary books. The mean white blood cell counts and white blood cell differential counts fell within the range recorded in other parts of the world. Mean aspartate aminotransferase and creatine kinase enzyme values were lower than the reference values while other mean serum biochemical values evaluated did not differ from normal values reported in other clinically healthy horses in different parts of the world. In conclusion, the generated data may serve as reference values for old horses in Nigeria in order to assess their health status.
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