Correlation between Rhipicephalus microplus ticks and Anaplasma marginale infection in various cattle breeds in Brazil

Abstract

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Unraveling the genetic variability of host resilience to endo and ectoparasites under natural infestation, in Nellore cattle

“…The observed median counts reported here are similar of other data sets available on the literature. For instance, Martins et al [18] performed repeated tick counts on 11 Brangus and 12 Nellore growing bulls raised on a commercial farm located at Mato Grosso do Sul -Brazil. The animals were naturally infested and no prophylactic treatment was performed [18].…”

“…For instance, Martins et al [18] performed repeated tick counts on 11 Brangus and 12 Nellore growing bulls raised on a commercial farm located at Mato Grosso do Sul -Brazil. The animals were naturally infested and no prophylactic treatment was performed [18]. The authors observed 45.51 ± 20.91 and 10.08 ± 2.00 (mean ± standard deviation) ticks on the Brangus and Nellore animals, respectively, and this numbers represent the tick count on the entire animal (both left and right sides).…”

Unraveling the genetic variability of host resilience to endo and ectoparasites under natural infestation, in Nellore cattle

“…There is a practice of multiplying tick counts by two to estimate the tick burden in the entire animal [18]. For the modified McMaster technique, a multiplicative factor can also be used to infer on the animal's parasite burden.…”

First Molecular Detection of Anaplasma Marginale, Babesia Bovis and Babesia Bigemina in Different Breeds of Cattle and Rhipicephalus Microplus in the Northern Hainan, China

“…A. marginale is a kind of Anaplasma, which can cause hemolytic anemia, miscarriage, yield loss and death in cattle [10]. According to statistics, in Brazil, the annual loss caused by parasites affecting cattle industry chain production is $13.96 billion [11].…”

“…Approximately 20 tick species, mainly of the genera Rhipicephalusand Dermacentor, have been reported as vectors of anaplasmosis in bovine species [13]. A. marginale is a part of the bovine tick-borne pathogens (TBDs), together with B. bigemina and B. bovis, it has an economic impact through direct costs related to mortality and morbidity and indirect costs related to disease treatment and prevention [10,14]. In China, A. marginale was rst discovered in cattle in Hebei Province in 1987, more than 30 years ago [15].…”