Table 4

Seasonal variations in the frequency of light flecks and spots after the eradication of lice.

Months
Number of hides
Max. score





0
1
2
3

Jan. Feb.
163
69.9%
16.0%
11.7%
2.4%
Mar. Apr.
141
57.5%
26.2%
13.5%
2.8%
May. Jun.
101
57.4%
22.8%
18.8%
1.0%
Jul. Aug.
61
68.9%
13.1%
16.4%
1.6%
Sep. Oct.
97
59.8%
21.7%
14.4%
4.1%
Nov. Dec.
101
55.5%
24.8%
15.8%
4.0%

Score 0 – No damage

Score 1 – Slight damage, with 1–2 light fleck or spot pr. 100 cm2.

Score 2 – Some damage, with 3–5 light fleck or spots pr. 100 cm2.

Score 3 – Severe damage, with more than 5 light fleck or spots pr. 100 cm2.

Nafstad and Grønstøl Acta Veterinaria Scandinavica 2001 42:99   doi:10.1186/1751-0147-42-99