Anthelmintic Drug Resistance of Gastrointestinal Nematodes of Naturally Infected Goats in Haramaya, Ethiopia

Table 1

Anthelmintic resistance test based on percentage faecal egg count reduction test (FECRT%) according to Coles et al.’s [22] methods.

Drug	Ivermectin	Albendazole	Tetramisole	Tetraclozan	Control
No. of animals	20	20	20	20	20
Min and max EPG before Rx	200-4000	200-2200	200-4600	300-2200	50-1900
Min and max EPG after Rx	0-1050	0-1000	0-150	0-700	100-1000
MpreDA FEC (±SEM)	690.5 (±175.8)	781.2 (±172.7)	1295.5 (±492.9)	900 (±160.9)	850 (±343.4)
MpostDA FEC (±SEM)	230.9 (±130.6)	240.6 (±87.5)	36.4^a (±15.2)	125^a (±52.3)	800 (±89.5)
FECRT (%)	71.1	69.9	95.7	84.3
95% CL	38.2-46.8	36.9-46.1	87.4-94.8	66.1-73.9
Interpretation	Resistance	Resistance	Suspects	Resistance

^aStatistically different from EPG of control group day 10 (). MpreDA FEC: mean predrug administration FEC; MpostDA: mean postdrug administration FEC; FEC: fecal egg count; FECRT: fecal egg count reduction test; Min: minimum egg count; Max: maximum egg count; EPG: egg per gram of feces; CL: confidence level; SEM: standard error of mean.