الفهرس 
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Abstract
SUMMARY
The development of intensive livestock farming hase created problems associated not only with jisease control, but also with contamination of soil with pathogenic microorganisms. The great majority of disease producing microorganisms are able to remain in an active and reproductive state in the 5c41 and have the capacity of causing infections or of producing potent toxins in food stuffs under proper conditions. Theçei’ore the c4m of thi worlç was to through light on the ro?.& of soil of animal enclosures in the ep4.dnhio1ogy of anaerobic bacflrja,
In this sWdy samples of soils were collected from oattle byres and sheep ahe1trs in Assiut province. Each soil sample was subjected for ohenical and bacteriological examination.
Chemical examination
Moisture moisture percentage of examined soil samples pf
cattle byres was 2.5 to 52.5 % with a neqn velue
of 22.13, while soil of sheep shelters flowed a
moisture oontet ranging from 5 to 35 % with a
mean value of 20.S %.
pBhe p11 value oL the examined soil samples from cattle byres rangi from 6.9 to 9,18 with a mean value of
8.018, while oorrosponding values for soil of sheep
shelters were 6,93 to 8.93 with a mean Value of 7.58.