Levels of Airbrone Bacteria in Milking Premises

Benham, C. L.; Egdell, J. W.

doi:10.1111/j.1471-0307.1970.tb01116.x

Cited by 9 publications

(3 citation statements)

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“…These results generally accord with those of other animal-house studies. Staphylococci "predominated" (to what extent was not given) and there was a "scarcity" of coliforms in swinehouse air (Gordon, 1963); over half of the bacterial colonies isolated from catde-house air were staphylococci and 6% were streptococci, but coliforms were "very rarely found" (Benham and Egdell, 1970); staphylococci were most prevalent, streptococci intermediate and coliforms least prevalent (<1%) in broiler-house air (LeBars, 1968); and, similarly, fewer than 1% of the aerial BCFP were coliforms in another broiler house (Carlson and Whenham, 1968).…”

Section: Discussionmentioning

confidence: 99%

Relative and Qualitative Aspects of Aerial Bacteria and Dust in Swine Houses

Curtis

Drummond

Grunloh

et al. 1975

Journal of Animal Science

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Aerial levels of bacterial-colony-forming particles (BCFP) in lung-depositable size ranges were determined using an eight-stage Andersen viable sampler with tryptose agar. Aerial levels of BCFP~< 4.7/am and ~<3.3/am in aerodynamic diameter were significantly and positively correlated with total-aerial-BCFP level in swinehouse air. On average, 31% of aerial BCFP were ~<4.7 /am and 15% were ~<3.3 /am in four University enclosed swine houses (n = 192); 30% and 22%, respectively, in a University modified-open-front house (n = 44) and 28% and 11%, respectively, in 12 houses at five commercial operations (n = 24). Aerial-dust level was determined using a Staplex highvolume sampler. Aerial-BCFP and-dust levels were significantly and positively correlated. There tended to be fewer aerial BCFP per unit of aerial dust in the modified-open-front house than in the enclosed houses at the University.Ten swine houses at commercial operations and four at the University were studied a total of 16 times to determine concentrations and sizes of aerial bacterial particles which formed colonies on tryptose (general medium), Chapman-Stone (special medium for staphylococci), KF Streptococcus (fecal streptococci) and Mac-Conkey (coliforms) agars, respectively. Ratio of bacterial-colony-forming-particle (BCFP) count on Chapman-Stone agar to that on tryptose averaged .36, that on KF Streptococcus to that on tryptose averaged .13 and that on Mac-Conkey to that on tryptose averaged less than .01. Twenty-one percent of the staphylococcal BCFP and streptococcal BCFP, respectively, and 9% of the coliform BCFP, were lung-depositable (~<4.7 /am in diameter). Nitrogen content of aerial dust in a swine-finishing house, in which a 13% crude-protein (CP) diet was fed, averaged 4.6%, or (4.6 x 6.25) = 28.7% CP (n = 17). Settled dust in a farrowing house, in which a 12% CP diet was used, averaged 23.3% CP (n = 6), whereas that in a room in which diets having 12 to 16% CP were prepared averaged 13.0% CP (n = 4). It was concluded that much of the dust in swine-house air was feed dust. (

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Section: Discussionmentioning

confidence: 99%

Relative and Qualitative Aspects of Aerial Bacteria and Dust in Swine Houses

Curtis

Drummond

Grunloh

et al. 1975

Journal of Animal Science

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“…No./1 2013 ___________________________________________________________________________ 129 pathogens are naturally present in the intestinal tract of cattle and these animals do not show signs of infection.Environmental sources of contamination like personnel contamination may contribute significantly as a source of microbial contamination of milk during machine milking, although workers suffering from certain zoonoses, such as Q fever, may pose a potential risk (11).Air is also thought to be an insignificant contributor to microbial contamination of raw milk. It has been calculated that airborne bacteria account for <5 cfu/ml of the bacterial load of milk; of these Bacillus spores would constitute <1 cfu/ml (12). However, a recent study by Pangloli et al (13) suggests that milking parlor air is a major source of Salmonella on the dairy farm.Water used in the production of milk may be one of the problems and arise when untreated water supplies are used to rinse and wash equipment.…”

Section: Vol/12mentioning

confidence: 99%

Udder preparation and its effect on udder cleanliness and milk quality

Hubaety¹

2013

QJVMS

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Total bacterial count was performed in eighty milk samples and eighty udder swabs collected from 20 cows, to compare the effect of treating udders with wet towel washing (55-60C 0 ), followed by paper towel drying; three concentrations of Iodophre and Hibitane followed by paper towel drying and two concentrations of potassium permanganate followed by paper towel drying with non-treated udders .Results showed that Log10 of CFU/ swab of untreated udders was significantly (p≤ 0.05) differ from those swab samples when udder was treated with wet towel washing (55-60C 0 ), followed by paper towel drying. By using iodophor, there was in asignificant (p≤ 0.05) reduction in the Log10 of CFU/ swab after udder treatment with all used concentrations of iodophor, and there was also proportional reduction in the Log10 CFU/ swab with each increase in the Iodophor concentration (0.1:100, 0.5:100 and 1:100) respectively. The same picture was gained by using Hibitane at concentrations of 0.25%, 0.5% and 1% as Iodophre. Potassium permanganate treatments with its two concentrations showed significant differences in Log10 /swab of udder before and after treatments and between its two concentrations 0.5:1000 and 1:1000.Total bacterial count of milk samples were a mirror of swab samples. From results it is evident that chemical disinfectants or hot water were effective in reducing udder contamination before milking.

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“…In farm cowsheds and milking parlours 161 l62 J. T. PATTERSON Benham and Egdell (1970) identified their isolates mainly as Gram-positive cocci, Gram-positive non-sporing rods and Bacillus spp.…”

Section: Please Scroll Down For Articlementioning

confidence: 99%

Airborne micro‐organisms in poultry processing plants

Jt¹

1973

British Poultry Science

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The levels of aerobic micro-organisms in the air of four poultry processing plants were determined. High total counts were obtained in the intake bay and plucking areas of all plants and in the eviscerating, trussing and packing areas and chilled holding-room at one plant. Numbers were generally fairly low in the latter areas of the other plants, as were counts of coli-aerogenes and yeasts and moulds. Staphylococcus aureus was found in the air of all the areas in one plant, but these were shown not to be of human origin. Salmonellae were not found in any of the samples. The contribution of the micro-organisms in the air to final contamination on carcasses should not be high under normal operating conditions if the intake bay and plucking areas are well sealed off from the other parts of the plant.

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Levels of Airbrone Bacteria in Milking Premises

Cited by 9 publications

References 0 publications

Relative and Qualitative Aspects of Aerial Bacteria and Dust in Swine Houses

Relative and Qualitative Aspects of Aerial Bacteria and Dust in Swine Houses

Udder preparation and its effect on udder cleanliness and milk quality

Airborne micro‐organisms in poultry processing plants

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