Bacteriological and haematological studies of clinical mastitis in goats in Ibadan, OYO State, Nigeria

Abstract

An investigation was undertaken to identify the bacteria from clinical cases of caprine mastitis in Ibadan and to compare the haematological values of mastitic and non-mastitic does. Bacteriological examination of milk samples from 35 clinically affected udders was performed. A total of 53 bacterial isolates belonging to seven bacteriological genera, were recovered from the milk of the mastitic does examined. The coagulase-negative staphylococci ( Staphylococcus epidermidis) were the most common pathogen in this study with an incidence of (50.9%); followed by Escherichia coli with (15.1%) incidence, while Streptococcus species and Bacillus cereus had an incidence of 9.4 and 7.5%, respectively. However, Mannhiemia ( P.) haemolytica, Corynebacterium species and Klebsiella pneumoniae showed an incidence of 5.7%, respectively. The profile of bacteria encountered in this investigation are among the pathogen that have been incriminated as sources of contamination of fresh milk meant for human consumption and are therefore of public health importance. The haematological values of mastitic and non-mastitic does were compared statistically. The erythrocytic values of mastitic does were significantly ( P < 0.05) lower than that of the non-mastitic does. However, the total and differential leucocyte counts of the mastitic does were significant ( P < 0.05) higher than that of the non-mastitic does. The full haematological counts are true reflection of the health status of an animal. Total and differential leucocyte counts in lactating does are true reflection of mastitis and will even assist the clinicians in predicting the prognosis of mastitic animals.