Genetic basis of benzimidazole resistance in Teladorsagia circumcincta in Ireland

Table 2 Faecal egg count, species surviving benzimidazole treatment (s) and substitution frequencies at positions 198 and 200 of the β –tubulin protein for each of the farms

	Faecal egg count^a				Species recovered post-mortem			Substitution frequency
Farm	Pre-treatment (epg)	Post 1^st treatment (epg)	Post 2^nd treatment (epg)	% Reduction^b	Teladorsagia circumcincta	Cooperia curticei	Trichostrongylus colubriformis	E198L	F200Y
Wicklow	1370	568	794	42	+	+	-	0.17	0.33
Kerry	889	409	406	54	+	+	-	-	1
Roscommon	1050	647	469	55	+	+	+	-	1
Galway	1122	263	194	83	+	-	+	-	0.94

ISSN: 2046-0481