In Vitro Anthelmintic Activity and Phytochemical Screening of Crude Extracts of Three Medicinal Plants against Haemonchus Contortus in Sheep at Haramaya Municipal Abattoir, Eastern Hararghe

Table 5

Mean adult worm mortality (±SEM) of different concentrations of the crude extracts and positive control (albendazole, 1.25 mg/ml) on adult mortality assay of H. contortus for 8-hour posttreatments.

Treatment	Concentration (mg/ml)	Number of parasites dead posttreatment (hours)
		0 hr	2 hr	4 hr	6 hr	8 hr
Croton macrostachyus (leaves part)	500		^ade		^ab	^a
	250		^ade	^bade	^ae	^a
	125		^ade	^bade	^ab	^a
	62.5		^ade	^bade		^a
Nicotiana tabacum (leaves part)	500		^ace		^ab	^a
	250		^ace	^abce	^ace	^a
	125		^ace	^abce	^ab	^a
	62.5		^a	^abce	^ace	^a
Zingiber officinale (rhizome part)	500		^cad		^ab	^a
	250		^cad	^cabd	^cabd	^a
	125		^cad	^cabd	^ab	^a
	62.5		^ca	^cabd	^cabd	^a
Albendazole	1.25		^a	^acde	^acde	^a
Distilled water	00.00		^cbde	^cbde	^cbde	^cbde

Note: values are . All superscripts indicate significance at . ^aCompared to untreated (DW), ^bcompared to albendazole, and ^ccompared to each concentration of methanolic extract of C. macrostachyus leave part; ^dcompared to each concentration of methanolic extract of N. tabacum leave; and ^ecompared to each concentration of methanolic extract of Z. officinale rhizome part.