Estimates of repeatability and correlations of hemoparasites infection levels for cattle reared in endemic areas for Rhipicephalus microplus

Publication date: Available online 12 December 2017 Source:Veterinary Parasitology Author(s): Rodrigo Giglioti, Henrique Nunes de Oliveira, Talita Barban Bilhassi, Amanda Izeli Portilho, Cintia Hiromi Okino, Cintia Righetti Marcondes, Marcia Cristina de Sena Oliveira Rhipicephalus microplus is a vector of cattle tick fever, a disease caused by the protozoa Babesia bovis and B. bigemina, and also anaplasmosis, caused by the Rickettsia Anaplasma marginale. These tick-borne diseases (TBD) cause considerable losses to Brazilian livestock breeders due to reduced productivity and treatment costs and pose an obstacle to the expanded use of taurine breeds because of their greater sensitivity to ticks and hemoparasites. Differences in susceptibility to hemoparasites have also been verified within breeds. Therefore, the objective of this study was to identify the mechanisms involved in the dynamics of interaction between tick, hemoparasite infections and Canchim breed cattle (5/8 Charolais+3/8 Zebu), to detect variations that can be used to distinguish animals with greater or lesser degree of resistance to these parasites. Forty-two Canchim females kept on pastures naturally infested by ticks were evaluated for the level of infestation by R. microplus and infection by B. bovis, B. bigemina and A. marginale. Twenty-four evaluations were performed (August 2013 to July 2015), with intervals of 28 to 30 days, in which the adult female ticks were counted on the body of each animal and bloo...
Source: Veterinary Parasitology - Category: Veterinary Research Source Type: research

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This study evaluated the haematological profile of adult individuals infected with the malaria parasite. Methods: A retrospective study was conducted using archived data of malaria positive cases from January 2017 to March 15, 2019. Data retrieved included subjects' demographics, malaria parasite count, malaria parasite species, and full blood count parameters. A total of 236 malaria positive subjects were included in the study. Results: The study showed that more females were infected with the malaria parasite than males (69.07% and 30.93%, respectively). A total of 87.3% of the study population were infected with...
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This study provides basic knowledge that is necessary to initiate Kyasanur Forest Disease (KFD) prevention programs in these areas. Ticks were sampled from Wayanad districts of Kerala from domestic animals and identified morphologically. A total of 195 cattle searched, in which 168 (86.15%) cattle were infested with ticks and a total of 3633 ticks comprising three genera and seven species were collected,Rhipicephalus microplus (52.71%) was prevalent species followed byHaemaphysalis bispinosa (16.9%),Rhipicephalus decoloratus (15.77%),Haemaphysalis turturis (11.42%),Rhipicephalus sanguineus (1.32%),Amblyomma integrum (1.15%...
Source: Journal of Parasitic Diseases - Category: Parasitology Source Type: research
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