دراسة نسب بعض الملوثات الجرثومية لحليب الأبقار في مدينة الكوفة محافظة النجف

الملخص EN

The present study was carried out on (300) specimens of dairy milk packing in the plastic bottles, for determine the some microbial contaminations percent at year (2011).

The results of present study was revealed, the high percent of microbial contamination was in the summer months, the percent was (98%) from examine milk samples, so the microbial contamination by staph.aureus was (38%) in summer season.

While the percent decreased into (33%) in winter & spring months.

The percent of microbial contamination involved strep.spp, E.coli & fungi (Candida & Aspirgellus) was (27 %, 16% & 15%) at respectively in summer season.

From another hand, the percent of microbial contamination by strept.spp.

& fungi was declined into (20% , 12%).

While the percent of microbial contamination by E.coli was elevated into (24%0 in winter & spring months when compared with summer & autumn months.

From present study, conclude that the etiology of dairy milk microbial.

Contamination may be belong to contamination of plastic bottles, cow mammary glands, hands of milkers, instruments of milking or due to the cows infected with mastitis which lead to milk microbial contamination via some pathogen causes.

As well as the emergency seasonal environmental changes on the year seasons, such as higher temperature on the year seasons & moisture beside the flying of dust & soils that lead to pollution of milk & microbial contamination occur.