Clinical haematology and biochemistry profiles of cattle naturally infected with Theileria orientalis Ikeda type in New Zealand
New Zealand Veterinary Journal, Volume 66, Issue 1, pp 21-29, Jan 2018
Publisher: Taylor and Francis
AIMS: To present the haematology and biochemistry profiles for cattle in New Zealand naturally infected with
METHODS: Haematology and biochemistry results were obtained from blood samples from cattle which tested positive for
RESULTS: When categorised by HCT, the proportion of samples with HCT <0.15 L/L (severe anaemia) was greater for adult dairy cattle than for beef or dairy calves, for both haematology (p<0.002) and biochemistry (p<0.001) submissions. There were differences (p<0.05) between adult dairy cattle and calves aged <6 months in the relationships between HCT and red blood cell counts, mean corpuscular volume, mean corpuscular haemoglobin, mean corpuscular haemoglobin concentrations, lymphocyte and eosinophil counts, and activities of glutamate dehydrogenase and aspartate aminotransferase. In both age groups anisocytosis was frequently recorded. The proportion of blood smears showing mild and moderate macrocytosis was greater in adults than calves (p=0.01), and mild and moderate poikilocytosis was greater in calves than adults (p=0.005).
CONCLUSIONS AND CLINICAL RELEVANCE: The haematology and biochemistry changes observed in cattle infected with
KEY WORDS: Cattle, Theileria orientalis, Ikeda, regenerative anaemia, biochemistry, haematology
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