Study the Prevalence of Lice and Hard Ticks of Sheep in Baquba City

Abstract

The aims of this study was conducted to estimate the prevalence of lice and hard ticks of sheep by examined 516 sheep of different age and sexes randomly in Baquba City – Diyala governorate, during a period 1-11-2011 to 31-5-2012.The total infection rate of sucking lice (Linognatus africanus) and biting lice (Bovicola ovis) 18.21% and 0.19% respectively; A significant difference (P<0.05) of months in the infection rate was recorded , a higher rate (32.86%) for sucking lice in December month while a lower rate (5.71%) in October month ; while , biting lice was recorded in December month only (1.40%). Also, A significantly affect (P<0.05) of age in the infection rate was recorded, the higher rate (26.6%) in the age group between 4-5< and the lower rate (12.5%) in the age group between 2-3 years. Sex had no significant difference (P>0.05) in the infection rate of females (19.40%) and males (15.30%). A significant difference (P<0.05) of lice sites was recorded, the higher rate (62.76%) in the tail and back areas, while no lice were found in face area. The results recorded that sheep were infected by four species of hard tick with a total rate 27.70%, which divided into three species of the genus Hyalomma, H. anatolicum, H. excavatum and H. turanicum 67.83%, 51.74% and 25.17% respectively, while the one species of the genus Rhipicephalus ( R. turanicus) in an infection rate 48.25% . A significant affect (P<0.05) in the infection rate was recorded during study months, the higher rate (58.57%) in April and the least rate (15.71%) in December. Age had no significant affect (P>0.05) in the infection rate, the higher rate (31.80%) was recorded in the age group between 2-3 years and the lower rate (25.50) in the age group between 3 months to one year. Also, sex had no significant affect (P>0.05) in the infection rate between males and females 29.30% and 29.70% respectively. A significant difference (P<0.05) of ticks sites was recorded of the body areas; A high rate (80.41%) on the tail, while no ticks were recorded on the legs and udder. A mixed infection of lice and hard ticks was recorded in a total rate 8.13%.