Anthelmintic efficacy on Parascaris equorum in foals on Swedish studs

Table 2 Faecal Egg Count Reduction Test performed on 9 studs.

*Farm*	AH	Group size*	*Group mean EPG d 0*	*Group mean EPG d 14*	*Max EPG d 0*	*Max* *EPG d 14*	*FECR* ¹ *d 14*	*FECR* ² *d 14*
1	iv	6	525	58	1100	200	78%	85%
2	iv	7	336	0	1350	0	100%	100%
3	iv	7	1157	721	4000	2300	7%	11%
4	iv	7	900	907	2600	1500	2%	0%
5	iv	6	283	125	500	250	24%	56%
6	iv	9	1194	961	3500	2200	1%	0%
4	fbz	3	1417	0	3550	0	100%	100%
7	fbz	5	700	0	1000	0	100%	100%
8	fbz	5	1750	0	2900	0	100%	100%
7	pyr	9	1133	34	2400	200	94%	93%
9	iv+pyr	2	125	5	150	10	91%	95%

AH - anthelmintic; iv - ivermectin; fbz - fenbendazole; pyr - pyrantel; EPG - number of eggs per gram faeces; mean EPG - arithmetic mean; d 0 - day of anthelmintic treatment; d 14 - 14 days following anthelmintic treatment; FECR - Faecal Egg Count Reduction.
* Only foals with at least 100 EPG included
¹ Arithmetic means of transformed individual FECRs (Pook et al. 2002)
² Arithmetic means of individual FECRs

ISSN: 1751-0147