Table-3.

Biochemical characteristics of the suspected E. coli isolates using API20E system.

Type of samples	Number of samples	API 20E results																					Number of recovered isolates		Recovery rate (%)
		ONPG	ADH	LDC	ODC	CIT	H2S	URE	TDA	IND	VP	GEL	GLU	MAN	INO	SOR	RHA	SAC	MEL	AMY	ARA	OX
Apparently healthy	11	+	-	+	+	-	-	-	-	+	-	-	+	+	-	+	+	+	+	-	+	-	4	8	73
		+	-	+	-	-	-	-	-	+	-		+	+	-	+	+	-	+	-	+	-	2
		+	+	+	+	-	-	-	-	+	-	-	+	+	-	+	+	+	+	-	+	-	2
Diseased	17	+	-	+	+	-	-	-	-	+	-	-	+	+	-	+	+	+	+	-	+	-	5	14	82
		+	-	+	-	-	-	-	-	+	-	-	+	+	-	+	+	-	+	-	+	-	3
		+	+	+	+	-	-	-	-	+	-	-	+	+	-	+	+	+	+	-	+	-	4
		+	-	-	-	-	-	-	-	+	-	-	+	+	-	+	+	+	+	-	+	-	2
Freshly dead	14	+	-	+	+	-	-	-	-	+	-	-	+	+	-	+	+	+	+	-	+	-	3	11	79
		+	-	+	-	-	-	-	-	+	-	-	+	+	-	+	+	-	+	-	+	-	2
		+	+	+	+	-	-	-	-	+	-	-	+	+	-	+	+	+	+	-	+	-	3
		+	-	-	-	-	-	-	-	+	-	-	+	+	-	+	+	+	+	-	+	-	3
Total	42																							33

E. coli=Escherichia coli, ONPG=Ortho nitro phenyl-βD-galactopyranosidase, ADH=Arginine dihydrolase, LDC=Lysine decarboxylase, ODC=Ornithine decarboxylase, CIT=Citrate utilization, H2S=Hydrogen sulfide, URE=Urease, TDA=Tryptophan deaminase, IND=Indole, VP=Voges Proskauer, GEL=Gelatinase, GLU=Glucose (fermentation/oxidation), MAN=Mannitol (fermentation/oxidation), INO=Inositol (fermentation/oxidation), SOR=Sorbitol (fermentation/oxidation), RHA=Rhamnose (fermentation/oxidation), SAC=Saccharose (fermentation/oxidation), MEL=Melibiose (fermentation/oxidation), AMY=Amygdalin (fermentation/oxidation), ARA=Arabinose (fermentation/oxidation), OX=Oxidase