PREVALENCE AND CHEMOTHERAPY OF WARBLE FLY INFESTATION IN GOAT POPULATION OF DISTRICT KHUSHAB, PAKISTAN.

Abstract

Warble fly (WF) is one of the serious threats affecting the goat production in
Pakistan. The objective of the current study was to find out the prevalence and control of goat warble
fly infestation (GWFI) in district Khushab, Pakistan. In the field, 780 goats were examined for the
period of one year. Out 780 goats, 106 (13.58%) were found infested with WF. The rate of infestation
in young animals (9.24%) was low as compared to the older animals (16.18%). Higher prevalence was
observed in males (15.11%) as compared to the females (12.83%).The highest prevalence of GWFI
was recorded in December. The nodules appearance on infested animals started in September and
ended in the month of February. Geography of the study area favors the onset of fly activity and
enhances the prevalence of the disease. Ivermectin was found highly -effective against all development
stages of Przhevalskianasilenus (WF)and no side-effects were observed.