Blood protozoa infection in cattle in Minia province with reference to tick infestation | ||||
| Egyptian Veterinary Medical Society of Parasitology Journal (EVMSPJ) | ||||
| Volume 20, Issue 1, 2024, Page 73-92 PDF (1.05 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/evmspj.2024.372908 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Sahar M. Gadelhaq | ||||
| Departement of Parasitology,Faculty of Veterinary Medicine,Minia University. | ||||
| Abstract | ||||
| This study was conducted to investigate the prevalence of blood protozoa infecting cattle, beside an invitro study of the efficacy of some common used acaricides i.e (Chlorprifos, Deltamethrin and Ivermectin) against Rhipicephalus annulatus tick. Blood and tick samples were collected from 240 cattle, in addition to hemolymph smears from ticks were examined microscopically by using Giemsa’s stained blood smear method. The study revealed that the overall prevalence of blood protozoa was 52%. Theileria infection was the highest with rate of 44.58%, while, Babesia infection was 2.5%, and Anaplasma infection was 2.9%. Blood protozoa infection was lower in young cattle, with 41.67% in calves and 55.2% in adult cattle. Blood protozoa infection was higher in females (54.8%) than males (49.5%), however the mixed infection was found to be higher in males. Theileria spp. infection was the greatest among tick-borne parasites. The autumn season had the highest infection rate (21%), while the spring season had the lowest prevalence (15%). The highest tick’s infestation rate was recorded in December (30%), and the lowest was in March (5%). The tick microscopically identified indicates only the presence of Rhipicephalus annulatus ticks. The microscopic examination of tick hemolymph revealed the presence of piroplasmic developmental stages in 37.2% of examined tick samples. The in-vitro results showed that chlorprifos had the highest efficacy of the tested acaricides, but deltamethrin and ivermectin demonstrated low efficacy. In conclusion, blood protozoa are still a threat on cattle in the study area and high restriction in using of deltamethrin and ivermectin is recommended due to low efficacy. | ||||
| Keywords | ||||
| Prevalence; Babesia; Theileria; Anaplasma; ticks; cattle | ||||
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