TABLE 1.

Biochemical reaction scheme for porcine Brachyspira species^a and proposed modification^b

Species	Group	Hemolysis	Indole production	Hippurate hydrolysis	α-Galactosidase activity	β-Glucosidase activity
B. hyodysenteriae	I	Strong	±	−	−	+
B. intermedia	II	Weak	+	−	−	+
B. murdochii	IIIa	Weak	−	−	−	+
B. innocens	IIIbc	Weak	−	−	+	+
B. pilosicoli	IV	Weak	−	±	±	−

^aAccording to Fellström et al. (10).

^bB. pilosicoli can be hippurate positive or negative according to the present study.