Comparative study of some indicator bacteria in cows and buffaloes raw milk in Al-Diwaniyah Province

[摘要] The present study was carried out in AL-Diwanyia city and it's different districts which includes (city center,Afak district and their regions,AL-hamza district and their regions,ALShamia district and their regions and AL-Daghara regions and its villages) during a period November 2010 to July 2010. A total of samples used in this study were 120 raw milk samples collected includes 60 samples for each species for (cows and buffaloes) for two different season of year (Winter and Summer),first start from (beginning November 2009 to end of the January 2010),and the second start from (beginning May to July 2010) The results of this study revealed the rising the averages of microbes contaminated raw milk samples in each species of animals included in this study,where raw milk samples for cows recorded 210 4.2х CFU/ml , buffaloes 214 12х CFU/ml,The highest averages of total Coliform bacterial count were found in raw milk samples of cows 214 4.3х CFU/ml and less averages in raw samples of buffaloes 214 6.1х CFU/ml . While averages of Staphylococcus aureas were high in raw milk samples of buffaloes 0.49 х216CFU/ml and less in raw milk samples of cows 0. 214 61х CFU/ml .While the averages of Streptococcus spp. were 0.37х 216CFU/ml, 0.38 21 х 6 CFU/ml, for cows and buffaloes respectively. Seasons of the year had effect on average of total bacterial count studied for each samples of raw milk for all species of animals included in this study.Where shown rising averages of microbes numbers during summer period (May,Jun and July),while there are decreasing in average of microbes during winter period (November,December and January).Summer season recorded significant difference as compared with winter season but averages of total coliform bacteria had no significant difference between two seasons.

[学科分类] 土木及结构工程学