Table 2. Effective concentrations of cinnamaldehyde, citronellal, anacardic acid and geraniol for inhibiting 50% and 95% of larval development (EC₅₀ and EC₉₅), confidence intervals (95% CI) and resistance factors for Haemonchus contortus isolates KOK, ISE and ECH.

	H. contortus isolates	EC50 (μM)	95% CI	RF50	EC95 (μM)	95% CI	RF95
	KOK	7,396	(6,766 - 8,083)	1.02	21,594	(16,127 - 32,738)	1.53
Cinnamaldehyde	ISE	7,232	(6,787 - 7,706)	1.00	14,115	(11,510 - 19,164)	1.00
	ECH	6,542	(6,319 - 6,772)	0.91	13,031	(11,529 - 15,183)	0.92
	KOK	28,422	(25,363 - 31,850)	0.98	99,284	(69,237 - 167,158)	1.86
Citronellal	ISE	28,883	(26,809 - 31,117)	1.00	53,319	(41,555 - 86,254)	1.00
	ECH	31,816	(28,463 - 35,565)	1.10	81,654	(57,513 - 148,312)	1.53
	KOK	6.11	(5.588 - 6.710)	1.15	24.01	(21.85 - 26.38)	0.59
Anacardic acid	ISE	5.31	(4.929 - 5.719)	1.00	40.85	(37.93 - 44.01)	1.00
	ECH	7.38	(6.858 - 7.931)	1.39	18.34	(17.06 - 19.72)	0.45
	KOK	13,119	(11,210 - 14,096)	1.39	42,670	(39,741 - 45,880)	1.52
Geraniol	ISE	9,430	(8,822 - 10,081)	1.00	28,154	(26,338 - 30,097)	1.00
	ECH	12,560	(11,867 - 13,293)	1.33	35,318	(33,369 - 37,379)	1.26

EC₅₀: effective concentration for inhibiting 50% of larval development; EC₉₅: effective concentration for inhibiting 95% of larval development; 95% CI: 95% confidence interval; RF₅₀: resistance factor for EC₅₀ (EC₅₀ of isolate X/EC₅₀ for the ISE isolate); RF₉₅: resistance factor for EC₉₅ (EC₉₅ of isolate X/EC₉₅ for the ISE isolate).