title: Bacteriological contamination in wastewaters from slaughterhouses.
abstract: Eighty samples of wastewater from 4 slaugherhouses (A and B pig and cattle, C pig and D cattle slaughterhouse), were examined to determine the bacteriological contamination. At the same time, attention was given to the influence of the types of slaughterhouses and the presence of a guttery on the composition of the bacterial flora in the wastewater. The total viable bacteria at 37 degrees C and 22 degrees C varied from 10(6) to 10(8)/ml. The coliforms and E. coli in the samples of the same slaughterhouse varied widely. The slaughtering of pigs did increase the contamination of wastewater with Salmonella compared with that of the slaughtering of cattle. The cleaning and scraping of the gut increased considerably the number of coliforms, E. coli and Salmonellae. All samples examined were contaminated with Coagulase and/or DNase positive staphylococci of which the maximum number was 1.5 x 1.0(4)/ml. Strains coming from slaughterhouse C belonged to the species Staph, aureus and Staph. hyicus subsp. hyicus and those of slaughterhouse D only to the species Staph. hyicus subsp. hyicus.
mesh_terms: D000003:Abattoirs; D000818:Animals; D002417:Cattle; D004926:Escherichia coli / Q000254:growth & development; D012475:Salmonella / Q000254:growth & development; D012722:Sewage; D013210:Staphylococcus / Q000254:growth & development; D013211:Staphylococcus aureus / Q000254:growth & development; D013552:Swine; D014865:Waste Disposal, Fluid; D014871:Water Microbiology
chemical_list: D012722:Sewage