D AY O K , O .
K U M , F. O .
B O T, T. Y
Department of Science Laboratory Technology
Plateau State Polytechnic
Barkin Ladi, Nigeria.
This research was aimed at examining the pathogenic bacteria in both pasteurized and raw milk in Shendam L.G.A. Plateau State, Nigeria. A total number of thirty (30) samples 25ml each of both raw and pasteurized milk were obtained randomly and examined using white side test, dye reduction test and biochemical test such as oxidase, catalase, coagulase, indole and sugar fermentation test for confirmation. The results showed that 24 (86.7%) were contaminated with Staphylococcus aureus when tested with the White Side Test. Based on the quality of the milk, Shimankar and Ndyak had the poorest handling practice. The bacteria load, showed highest count of 140 X 103 in Shimankar’s vendor and lowest count was recorded in raw milk in Kalong. The morphological and biochemical identification revealed that five microorganisms namely; Staphylococcus aureus, Salmonellaspp, Klebsiellaspp, Shigelladysentriae and Streptococcusspp. Salmonellaspp. was the highest with 14(46.7%) while the least was Streptococcusspp. with 2(6.6%). This study showed that pathogenic bacteria were associated with both raw and pasteurized milk in the studied area. The prevalence of these pathogens in milk sampled could be associated with the occurrence of diseases such as mastitis, poor storage, poor hygiene of milkers and retailers. Good health condition of cow,processing and hygiene practices are hereby recommended.
Keywords: pathogenic, bacteria, pasteurized, raw, milk and vendor.
International Journal of Food and Agricultural Research Vol.14 No. 1&2 © 2019 by The Development Universal Consortia. All Rights Reserved