The Microbial Environment of the Calf With Diarrhea

the article addresses the microbial environment of the calf with diarrhea. The article starts with a background into the disease and it's treatment. In 1979, workers at the North Dakota State University veterinary science and bacteriology departments began a two year study on the microbial environment of the calf with diarrhea as a part of the NDSU Calf Diarrhea Research Program.In this study, the occurance, the number and pathogenic properties of the E. coli types found in soils from calving barns, calf pens, feedlots and pastures were investigated. This article covers the experimental methods. the results of this study indicated a reservoir of potentially pathogenic E. coli strains in barnyard soils contaminated with bovine feces. Of these strains were K99 pili. Strains isolated from diseased calves were K88 and K99 antigens - both associated with this disease in newborn calves

The associated microflora to the larvae of human bot fly Dermatobia hominis L. Jr. (Diptera: Cuterebridae) and its furuncular lesions in cattle

The microflora associated to furuncular lesions, larvae and pupae of Dermatobia hominis, as well as the relationships between parasite, host and microflora associated, as a comprehensive microsystem, has been studied. One hundred and two furuncular myiasis due to D. hominis larvae in several breeds of cattle were studied and the following bacterial species were significant: Staphylococcus aureus, S. epidermidis, S. warneri, Bacillus subtilis and Escherichia coli. Closely related, the microflora associated to 141 samples from first, second, third instar larva and both external surface and larval cavities has been studied. The representative associated microflora to the larvae were: S. aureus, B. subtilis, S. hycus and Moraxella phenylpiruvica, Moerella wisconsiensis, Proteus mirabilis and P. vulgaris, M. phenylpiruvica, M. wisconsiensis, P. mirabilis and P. rettgeri were the representative microflora associated to 64 pupae of D. hominis