| The study was conducted for the isolation and identification of causative agent cause diarrhea cases in cows and calves, 30 stool samples were collected from cow and calves infected with diarrhea during period between December 2010 until the end February 2011 includes the following location (Aljebela station cows, Tuz, College of Agriculture Farm, Veterinary Hospital of Tikrit). the specimens culture on selective media and Diagnostic depending upon Morphology, cultural and Biochemical tests, the isolation percentage was 100%. 20(21.3%) bacteria isolates belong to Escherichia coli were isolation from sum 94 isolates. 16(17%) bacteria isolates for Salmonella typhimurium, 14(14.9) bacteria isolates for Pseudomonas aeruginosa,11(11.7%) fungi isolates for Candida albicans, 9(9.57%) bacteria isolates for Klebsiella pneumoniae, 8(8.51%) fungi isolates for Rhizopusspp, 5(5.3%) bacteria isolates were belong Bacillus firmusand Proteus mirabilis, 4(4.2%) fungi isolates for Aspergillusniger and one isolates(1.1%) were belong Aspergillusfumigatus and clostridium prefringens. Also the study includes study isolates bacterial sensitivity toward Antibiotics are Chloramphencol, Tetracycline, Bactericin, Sulfatrimethoprime, Ciprofloxacin, Erythromycin. The results show all bacteria isolates for Escherichia coli,Salmonella typhimuriumandKlebsiella pneumonia were resistance the percentage (100%) to Erythromycin, Bactericin.and susceptible (100%) to Ciprofloxacin Sulfatrimethoprime, Chloramphencol, Tetracycline. While show the bacteria isolates for clostridium prefringens, Bacillus firmus, Proteus mirabilis were resistance the percentage (100%)to Ciprofloxacin, Erythromycin, Tetracycline, Bactericin. and susceptible (100%) to Chloramphencol, Sulfatrimethoprime. While showed Pseudomonas aeruginosaare resistance the percentage (100%) to Chloramphencol, Sulfatrimethoprime, Bactericin, Erythromycin, Tetracycline. and susceptible (100%) to Ciprofloxacin.. |