Frequency distribution of hard ticks (Acari: Ixodidae) infesting bubaline population of district Toba Tek Singh, Punjab, Pakistan

摘要

The current research was conducted to define the epidemiological parameters related to the prevalence and associated risk factors of tick infestation in buffaloes in the Toba Tek Singh District of central Punjab, Pakistan. The prevalence of ticks on buffaloes was 31.21 % (352/1,128). Among the species of ticks, the prevalence of Hyalomma marginatum (75.56 %; 266/352) was higher (P < 0.05; odd's ratios (OR) = 3.09) than Rhipicephalus microplus (24.44 %; 86/352). Female buffaloes (69.60 %; 245/352) and younger animals (59.09 %; 208/352) were more heavily infested than males (30.40 %; 107/352) and adult animals (40.91 %; 144/352), respectively, whereas breed was not a determinant (P > 0.05). With regard to management and husbandry practices, the prevalence of ticks was higher in animals kept on uncemented flooring (54.55 %; 192/352; OR = 1.90) followed in order by partially cemented (28.69 %; 101/352; OR = 1.71) and fully cemented flooring (16.76 %; 59/352). With regard to feeding systems, grazing animals (64.20 %; 226/352) were more burdened compared to stall-fed animals (35.80 %; 126/352). The highest tick prevalence was recorded in closed housing systems (52.27 %; 184/352), followed by semi-closed (34.09 %; 120/352; OR = 1.53), and open housing systems (13.64 %; 48/352). Rope-tied animals (70.73 %; 249/352) were more parasitized (P > 0.05) than open (29.27 %; 103/352). Prevalence in the study district was highest in tehsil Kamalia followed in order by T.T. Singh and Gojra. The primary body area of infestation by ticks (head, neck, ear, dewlap, back, abdomen, foreleg, shoulder, hind leg, congenital areas, and tail) ranged from highest at inside thigh (17 %) to lowest at rump. In the present survey, the highest prevalence was recorded in July and lowest in December. Comparison of hematological changes showed remarkable differences between infested and non-infested animals, in the form of low values of infested animals, whereas an increment in biochemical parameter values was observed in tick-infested animals. The present study provides significant data to enhance planning for tick control program in the study area.