Serological evidence of exposure to tick fever organisms in young cattle on Queensland dairy farms

Sserugga, J.; Jonsson, N.N.; Bock, R.E.; More, Simon J.

doi:10.1111/j.1751-0813.2003.tb11077.x

Cited by 18 publications

(8 citation statements)

References 20 publications

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“…Considering the frequency with which synthetic pyrethroid resistance has been reported in Brazil, and elsewhere, the claim of resistance is very likely to be correct. Sseruga et al(2003) studied the serological evidence of exposure to tick fever organisms in young cattle on Queensland dairy farms. They concluded that, in tick-infested areas, vaccination is the most effective means of protecting cattle against tick fever.…”

Section: Resistancementioning

confidence: 99%

Importance of ticks and their chemical and immunological control in livestock

Rajput

Chen

et al. 2006

J. Zhejiang Univ. - Sci. B

183

118

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The medical and economic importance of ticks has long been recognized due to their ability to transmit diseases to humans and animals. Ticks cause great economic losses to livestock, and adversely affect livestock hosts in several ways. Loss of blood is a direct effect of ticks acting as potential vector for haemo-protozoa and helminth parasites. Blood sucking by large numbers of ticks causes reduction in live weight and anemia among domestic animals, while their bites also reduce the quality of hides. However, major losses caused by ticks are due to their ability to transmit protozoan, rickettsial and viral diseases of livestock, which are of great economic importance world-wide. There are quite a few methods for controlling ticks, but every method has certain shortcomings. The present review is focused on ticks importance and their control.

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Section: Resistancementioning

confidence: 99%

Importance of ticks and their chemical and immunological control in livestock

Rajput

Chen

et al. 2006

J. Zhejiang Univ. - Sci. B

183

118

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“…Serological evidence suggests that former practices regarding the need to maintain a minimum number of ticks on animals to ensure endemic stability to cattle babesiosis were most likely wrong [9,44,45]. Additional academic research may identify novel targets for acaricide action, but without commercial commitment, this research is unlikely to impact tick control.…”

Section: Background: Ticks Climate Landscape and Human Forcesmentioning

confidence: 99%

Current Limitations in the Control and Spread of Ticks that Affect Livestock: A Review

Estrada-Peña

Salman

2013

Agriculture

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Ticks are well-known parasites that affect livestock productivity. This paper reviews the current knowledge regarding the spread of ticks with their impact in animal health and the limitations to achieve effective control measures. The forecasted trends in climate play an obvious role in promoting the spread of ticks in several regions. It appears that climate warming is pivotal in the spread and colonization of new territories by Rhipicephalus microplus in several regions of Africa. The reported increase in altitude of this tick species in the mountainous regions of Central and South America appears to be driven by such general trends in climate change. This factor, however, is not the only single contributor to the spread of ticks. The poor management of farms, uncontrolled movements of domestic animals, abundance of wild animals, and absence of an adequate framework to capture the ecological plasticity of certain ticks may explain the complexity of the control measures. In this paper, we review several details regarding the relationships of ticks with the environment, wild fauna and competition with other species of ticks. Our intention is to highlight these relationships with the aim to produce a coherent framework to explore tick ecology and its relationship with animal production systems.

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“…The climatic conditions determined in this study are favorable for tick proliferation and Babesia inoculation, thus explaining the high prevalence of babesiosis and the absence of outbreaks. Previous studies conducted in an area where a low prevalence for bovine babesiosis was estimated showed an instability condition for calves 18 …”

Section: Discussionmentioning

confidence: 92%

Infection and Seroconversion of Susceptible Animals Introduced into a Babesiosis Endemic Area

Lopez

Millán

Ramos

et al. 2008

Annals of the New York Academy of Sciences

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The study aimed to determine the incubation period of Babesia sp. infection in naive cattle and to monitor the serological response once exposed to natural Boophilus microplus (Rhipicephalus microplus)-infested paddocks. The study was carried out on a farm located in Veracruz, Mexico. Five groups of five steers were relocated every 3 months from a tick-free area to a tick-infested paddock. Animals were introduced in October, January, April, July, and October. Blood samples were taken daily until day 21 to determine packed cell volume (PCV), percentage of parasitized erythrocytes (PPE), and antibody titers to Babesia bigemina and B. bovis by the indirect fluorescent antibody procedure. Detection of Babesia in blood was also performed by species-specific PCR. The estimated incubation period was 6-14 days post introduction to paddocks (PIP), with fever (41 degrees C) for at least 3 days. PCV decreased by >25% and Babesia parasites were observed during the clinical phase of the disease. The highest individual PPEs (0.44% and 0.22% for B. bovis and B. bigemina, respectively) were observed from animals introduced in October. The four other groups showed a mean PPE ranging from 0.002-0.146% at day 14 PIP. All animals were detected as PCR positive between 8-14 days PIP. The highest antibody titers were 1:3328. The environmental conditions were favorable throughout the year for tick reproduction as the farm showed enzootic stability and hyperendemic conditions for bovine babesiosis. In this type of farm, strategic tick control could be accompanied by babesiosis vaccination, particularly for cattle relocated from tick-free areas.

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Serological evidence of exposure to tick fever organisms in young cattle on Queensland dairy farms

Cited by 18 publications

References 20 publications

Importance of ticks and their chemical and immunological control in livestock

Importance of ticks and their chemical and immunological control in livestock

Current Limitations in the Control and Spread of Ticks that Affect Livestock: A Review

Infection and Seroconversion of Susceptible Animals Introduced into a Babesiosis Endemic Area

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