الفهرس 
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Abstract
Feacal matter plays an important role in transmitting bacteria to udder of bovine and consequently causing mastitis
A total of 186 samples were collected from different farms of Kafr El-Sheikh Governorate (93 milk samples and 93 rectal swab samples).
The samples were transferred in ice box to the lab. of Dept. of Microbiology, Faculty of Vet. MedicineAlexandriaUniversity for bacteriological examination.
The results obtained from this study showed that:-
Staph.aureus,E. coli , Pseudomonas aeroginosaandKlebsiella pneumoniawere isolated from mastitis milk at a percentage of 61.4 % , 19.3 % , 10.5 % and 5.3 % respectively and revealed that Staph. aureus was the prevalent pathogen isolated from milk of mastitic animals.
Pseudomonas aeroginosa,Staph. aureus,Klebsiella pneumonia and Salmonellaenteritidiswere isolated from milk of apparently healthy animals at a percentage of 47.2 % , 22.2 % , 11.1 % and 2.8 % respectively.
E. coli ,Salmonellaenteritidis and Klebsiella pneumonia were isolated from feacal matter of diarrhoeicanimals at a percentage of 75 % , 9.4 % and 3.1 % respectively and revealed that E. coliwas the prevalent pathogen isolated from feacal matter of diarrhoeicanimals .
Staph.aureus , Pseudomonas aeroginosaandKlebsiella pneumoniawere isolated from feacal matter of apparently healthy animals at a percentage of 52.5 % , 36.1 % and 4.9 % respectively.
Thirty two out of 93 (34.4%) examined milk samples and rectal swabs of the same animals gave Staph. aureus , 13 out of 93 (14%) gave Pseudomonas aeroginosa , 11 out of 93 (11.8%) gave E.coli , 5 out of 93 (5.4%) gave Proteusmirabilis , 3 out of 93 (3.2%) gave Klebsiella pneumonia , 1 out of 93 (1.1%) gave Salmonellaenteritidis and 28 out of 93 (30.1%) examined milk samples and rectal swabs of the same animals gave different bacteria .
The agreement between the bacteria isolated from milk and feaces of cattle was found in 65 out of 93 (69.9%) examined milk samples and rectal swabs of the same animals .
The disagreement between the bacteria isolated from milk and feaces of cattle was found in 28 out of 93 (30.1%) examined milk samples and rectal swabs of the same animals .
The results indicated that, the bacteria isolated from milk is correlated positively with bacteria isolated from the feaces.
Five out of 10 (50%) E. coliisolates gave positive result for Stx1 , 4 out of 10 (40%) E. coliisolates gave positive result for Stx2 and 5 out of 10 (50%) E. coliisolates gave positive result for eaeA.
Three out of 10 (30%) E. coliisolates gave positive result for eaeA and Stx1 , 1 out of 10 (10%) E. coliisolates gave positive result for Stx1 , Stx2 and eaeA , 1 out of 10 (10%) E. coliisolatesgave positive result for Stx1 and Stx2 , 1 out of 10 (10%) E. coliisolates gave positive result for eaeA and Stx2 and 1 out of 10 (10%) E. coliisolates gave positive result for Stx2.