Identification of Major Ectoparasites Infesting Sheep in Aba Jima District, Oromia Region, Ethiopia

Abstract

The study was carried out to identify the best exposure period of phosphine (200 ppm) against insect pest complex of stored maize grain with complete randomized design (CRD) analysis of variance. Three insects types were used i.e. Rhizopertha dominica (Rd); Tribolium castaneum (Tc) and Trogoderma granarium (Tg). After one day the data showed significant result (P<0.05) in mortality (%) Rd (73.33%) compared to the other insects but non-significant results (P>0.05) was recorded by Tc (56%) and Tg (46%). The data showed non-significant result (P>0.05) in mortality (%) of Tc and Tg (58% and 50.67%) and showed significant result of Rd (76.67%) after three days. The data showed highly significant result (P<0.05) in mortality of Rd (100%) but showed non-significant result (P>0.05) of Tc and Tg (55.33% and 56%) after five days. Significant result (P<0.05) in mortality was recorded by Rd (100%) compared with Tc (66%; 68%) after 7 days. However 100% mortality was recorded by Rd compared to Tc (76.67%) and (74.67%) after 10 days.