Quantification of resistant alleles in the β-tubulin gene of field strains of gastrointestinal nematodes and their relation with the faecal egg count reduction test

Table 3 Allele frequencies after ABZ treatment for T. circumcincta SNPs 167 and 198/200, and T. colubriformis SNP 198/200, and morphological identification

Farm	% Egg reduction	R/S classification	T. colubriformis		T. circumcincta			% L3 species
Farm	% Egg reduction	R/S classification	% SNP200	% SNP198	% SNP200	% SNP198	% SNP167	Tc	Tri	Bu
1	91.4	Borderline	1.7	4.8	2.9	0	3	50	50	0
2	98.9	S	97.6	3	0	0	23.8	55	45	0
3	100	S	96	1.5	0	13.2	4.4	56	44	0
4	98.5	S	99.3	5.5	0	0	-	58	42	0
5	100	S	89.8	0	0	0	4.8	52	48	0
6	99.3	S	1.3	3	-	-	-	62	38	0
7	100	S	90.6	19	-	-	0	47	47	6
10	100	S	97.2	4.8	-	-	0	38	62	0

Tc: T. circumcincta, Tri: Trichostrongylus spp and Bu: Bunostomun spp. -: Failed samples

ISSN: 1746-6148