الفهرس 
Introduction and aim of the workOnly 14 pages are availabe for public view
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Abstract
ifty samples from each air and soil were collected from three cattle :s; a)- Agriculture dairy farm, b)- Arab-El- Moteer & c)- Bani-More y farm and three sheep shelters; a)- Agriculture sheep enclosure, b)¬b-El- Awaamer & c)- Bani- Sanad Sheep enclosure at Assiut govem¬:e, as well as three hundred and seventy-five teat swabs; of them two ldred and twenty five from cows and one hundred and fifty teat ends lbs from ewes. The collected samples were bacteriologically evaluated, ng the total viable count and pathogenic and potentially pathogenic ~teria in air, soil and teat ends were investigated. In addition the effect of croclimatic conditions were evaluated by recording environmental nperature and relative humidity during sampling.
It has been observed that the mean value of the total viable count in the r per cubic meter from cattle byres and sheep shelters were (975.27 x 102) 407.66 colony forming unit and (269.07 x 102) ± 122.39 colony forming lit respectively.
The bacteriological examination of the air samples revealed that the ;olation of different species of pathogenic and potentially pathogenic lacteria as Staphylococcus aureus coagulase + ve (32%&32%), ~phylococcus aureus coagulase - ve (0%&0%), Staphylococcus qJidermidis (40%&48%), Streptococcus jaecalis var jaecalis :28%&12%), Streptococcus jaecalis var liquejaciens (12%&0%), Streptococcus jaecalis var zymogenes (24%&4%), Streptococcus bovis (16%&0%), Streptococcusjaecium (20%&12%), Streptococcus durallS
0%&4 %), Corynebacterium pyogenes (200/0&20%), Corynebacterium
is (80/0&12%), Corynebacterium bovis (8%&0%), Corynebacterium nale (8%&4%),Corynebacterium xerosis (8%&12%), E.coli 360/0&32%), Klebsiella aerogenes (16%&8%), Klebsiella pneumonia 8%&12%), Proteus vulgaris (8%&0%), Proteus rettgeri (32%&24%), oteus m{rabilis (120/0&12%), Proteus morganii (24%&28%), SltigeUa neri (00/0&00/0) and Clostridium perfringens (40/0&20%) from cattle
yres and sheep shelters respectively.
The mean value of the total viable count in the soil samples per gram collected from cattle byres and sheep shelters were (523.7 x 109) ± 105.25 colony forming unit and (176.18 x 109) ± 124.10 colony forming unit
The bacteriological investigation of the soil samples collected from the examined cattle byres and sheep shelters revealed that the isolation of Staphylococcus aureus coagulase + ve (48%&40°,10), Staphylococcus aureus coagulase - ve (12%&0%), Staphylococcus epidermidis (800/0&88%), Streptococcus faecalis var faecalis (320/0&20%), faecalis var liquefaciens (20%&0%), Streptococcus faecalis var zymogenes (280/0&8%), Streptococcus bovis (280/0&0%), Streptococcus faecium (32%&20%), Streptococcus durans (16%&0%), Corynebacterium pyogenes (16%&16%), Corynebacterium ovis (8%&28%), Corynebacterium bovis (12%&0%), Corynebacterium renale (12%&0%), Corynebacterium xerosis (8%&20%), E.coli (96%&80%), Klebsiella aerogenes (24°,10&280/0), Klebsiella pneumoniae (8%&4%),
oteus vulgaris (24%&0%), Proteus rettgeri (44%&48%), Proteus . abilis (24%&12%), Proteus morganii (36%&32%), Shigellajlexneri 16%&8%) and Clostridium perjringens (52%&72%) respectively.
The bacteriological examination of the teat swabs revealed the isolation
Staphylococcus aureus coagulase + ve (29.77%&20%), rphylococcus aureus coagulase - ve (2.66%&0%), Staphylococcus epidermidis (18.66%&28.66%), Streptococcus jaecalis var jaecalis (17.33%&14%), Streptococcus jaecalis var liquejaciens (4.44%&0%), Streptococcus jaecalis var zymogenes (5.77%&0%), Streptococcus bovis (11.55%&0%), Streptococcus jaecium (9.33%&14.66%), Streptococcus durans (1.77%&0%), Corynebacterium pyogenes (12.88%&8.66%), Corynebacterium ovis (1.33%&12%), Corynebacterium bovis (19.55%&0%), Corynebacterium renale (2.22%&0%), Corynebacterium xerosis (4.88%&2.66%), E.coli (63.11%&47.33%), KlebsieUa aerogenes (4.44%&2.66%), Klebsiella pneumoniae (2.22%&1.33%), Proteus vulgaris (5.77%&0%), Proteus rettgeri (2.66%&1.33%), Proteus mirabilis (4.88%&2.66%), Proteus morganii (2.66%&2%), Shigella jlexneri (0%&0%) and Clostridium perjringens (30.22%&50%) from cows and ewes respectively.
It was found that from our research the ambient temperature and relative humidity percentages are considered to be the most important factors that affect the bacterial population in the air and soil. So, it was found that there was a positive highly significant correlation between the bacterial count in the (air & soil) and the relative humidity percentage and there was an
erse (significant and highly significant) correlation between the ambient and the viable count in the air and soil of cattle byres
At the same time, it was found that there was a positive (highly ’gnificant & significant) correlation between the bacterial count in the (air soil) and the relative humidity percentage but an inverse (highly ’gnificant & significant) correlation between the ambient temperature and e viable count in the air and soil of sheep shelters was detected
Also, it was found that a highly significant correlation between the incidence of isolated microorganisms from soil, air and teat ends except in Bani -More dairy farm, there was non significant correlation between soil and air as wall as between air and teat ends while in Banl-Sanad sheep shelter, there was non significant correlation between the incidence of isolated organisms from air and teat ends of ewes.