TABLE 1.

Mean lice (Bovicola caprae) count and intact lice egg (nits) in different body regions of goats.

Body region	Day 0	Day 3	Day 7	Day 14	Day 21	Day 28	Day 42	Day 56
Group A – Ivermectin-treated group (n = 10)
Neck	54.3	9.6	4.3	0.0	0.0	0.7	1.7	4.3
Shoulder	43.8	7.2	1.4	0.0	0.0	0.5	1.1	3.1
Withers	32.2	3.2	0.9	0.0	0.0	0.2	0.8	1.2
Inguinal	21.3	4.1	1.2	0.0	0.0	0.0	0.2	0.5
Flank	24.9	1.9	0.3	0.0	0.0	0.0	0.0	0.4
Rump	21.1	1.2	0.1	0.0	0.0	0.0	0.0	0.1
Total count	197.6*	27.2*	8.2*	0.0*	0.0*	1.4*	3.8*	9.6*
Intact lice egg	Yes	Yes	No	No	No	No	No	Yes
Percentage reduction†	-	86.32	96.02	100.00	100.00	99.38	98.33	95.82
Reduction efficacy‡	-	86.13	95.97	100.00	100.00	99.37	98.31	95.76
Group B – Control group (n = 10)
Neck	53.8	53.9	55.8	58.6	59.2	58.2	61.2	59.2
Shoulder	41.9	42.6	43.4	46.7	47.2	46.2	42.2	46.8
Withers	33.4	33.9	34.7	35.8	36.3	39.2	36.2	37.3
Inguinal	22.1	21.1	23.2	25.2	24.8	25.1	30.0	29.8
Flank	23.6	23.8	24.6	26.7	29.1	28.0	29.2	28.9
Rump	20.1	20.8	21.7	23.2	27.2	26.6	25.6	24.4
Total count	194.9**	196.1**	203.4**	216.2**	223.8**	223.3**	224.4**	226.4**
Intact lice egg	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes

^*, values differ significantly (p < 0.01) in a row;

^**, values differ significantly (p < 0.05) in a row.

^†, Calculated by Abbott’s formula – refer to Eqn 2.

^‡, Calculated by Abbott’s formula – refer to Eqn 1.