Oestrus ovis larval infestation among sheep and goats of Green Mountain areas in Libya
Heads of sheep (n=180) and goats (n=120) slaughtered
at four regions (Labraq, Shahat, Elbeida, and Masa) of
Green Mountain areas in Libya were investigated for
the presence of larvae of Oestrus ovis. The animals
were divided into sex and age groups. The heads
were cut along longitudinal and sagittal axes, and the
larvae (L1, L2, and L3) were collected. The infestation
rate was significantly higher in sheep (51.66%;
n=93/180) as compared to goats (28.33%; n=34/120). In
sheep, the rate was higher during May (100%), while
in goat, it was higher during August (70%). The
incidence of L1 peaked in April (90%) for sheep and
October (100%) for goats, while L2 reached to
maximum in May for sheep (26.95%) and goats (75%).
L3 reached to peak in February (50%) for sheep, and
June (25%) for goats. Mean intensity of larval burden
was higher in sheep than goat, reaching to peak in
June (9.1 larvae/head) for sheep and March (3.5
larvae/head) for goats. The infestation rate was
significantly higher in males than females. The older
animals were mostly affected as compared to younger
animals. Highest infestation rate was recorded in
Masa (45.83%), and the lowest rate was found in
Labraq (40.27%). In conclusion, these findings may be
used in designing the control strategies of myiasis in
Copyright (c) 2015 Mohsen M. Negm-Eldin, Reham S. Elmadawy, Gasim M. Hanan
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