2000, Number 1
<< Back Next >>
Vet Mex 2000; 31 (1)
Study of babesiosis and anaplasmosis in relation to tick burdens in dairy calves in the eastern Bolivian lowlands
Ribera CH, Cuéllar AM, Barba CG, Carrique-Mas JJ, Walker A
Language: English/Spanish
References: 17
Page: 39-46
PDF size: 99.84 Kb.
ABSTRACT
The aim of this paper was to study the relationship between tick burdens and inoculation rates for
Babesia bovis, B. bigemina and
Anaplasma marginale in dairy farms in Santa Cruz, situated in the tropical eastern lowlands of Bolivia. In these farms, cattle are periodically dipped with acaricide against the cattle tick
Boophilus microplus, the only species of significant importance in this region. Fifty one Holstein calves from four dairy farms were selected. Animals were visited monthly from the age of 2-3 months until they were 7-8 months old. Monthly standard female tick counts were carried out, and serum samples were taken from them. Samples were tested for antibodies against
B. bovis, B. bigemina and
A. marginale using indirect ELISA. These results served to calculate inoculation rates for each of the haemoparasites.
A significant linear correlation was found between log-transformed tick numbers and inoculation rates for
B. bovis, but not for
B. bigemina and
A. marginale. A theoretical minimum number of ticks necessary for endemic stability was calculated from regression formulae. The interpretation of these results and their practical application is discussed.
REFERENCES
1. Guglielmone A. Epidemiology of babesiosis and anaplasmosis in South and Central America. Vet Parasitol 1995;57:109-119.
2. Nari A. Strategies for the control of one-host ticks and relationship with tick-borne diseases in South America. Vet Parasitol 1995;57:153-165.
3. Alonso M, Arellano-Sota C, Cereser VH, Cordoves CO, Guglielmone AA, et al. Epidemiology of bovine anaplasmosis and babesiosis in Latin America and the Caribbean. Rev Sci Tech 1992;11:713-733.
4. Mahoney D, Wright I, Goodger B, Mirre G, Sutherst R, Utech K. The transmission of Babesia bovis in herds of European and Zebu European cattle infected with the tick Boophilus microplus. Austr Vet J 1981;57:461-469.
5. Utech KBW, Wharton RH, Kerr JD. Resistance to Boophilus microplus (Canestrini) in different breeds of cattle. Austr J Agric Res 1978;29:885-895.
6. Payne RC, Scott JM. Anaplasmosis and babesiosis in El Salvador. Trop Anim Health Prod 1982;14:75-80.
7. Riek R. Babesiosis. In: Weinmann D, Ristic M, editors. Infectious blood diseases of man and animals. New York: Academic Press,1968:219-268.
8. Ross D, Mahoney D. Epizootiological factors in the control of bovine babesiosis. Austr Vet J 1972;48:292-298.
9. Mahoney D. The application of epizootiological principals in the control of babesiosis in cattle. Bull Off Int Epiz 1974,81:123-138.
Montenegro-James S. Prevalence and control of babesiosis in the Americas. Mem Inst Oswaldo Cruz 1992;87(Suppl.):27-36.
FAO. Epidemiology of tick-borne diseases: epidemiological parameters and their application to the control of tick-borne diseases. Manual of ticks and tick-borne diseases. Rome, Italy: FAO, 1975.
Wharton R, Utech K, Turner H. Resistance to the cattle tick, Boophilus microplus in a herd of Australian Illawarra Shorthorn cattle: its assessment and heritability. Austr J Agric Res 1970:21:163-181.
Lemos A, Teodoro R, Oliveira G, Madalena F. Comparative performance of six Holstein-Friesian ´ Guzera grades in Brazil. Anim Prod 1985;41:187-191.
Molloy J, Bowles P, Jeston P, Bruyeres A, Bowden J, et al. Development of an enzyme-linked immunosorbent assay for the detection of antibodies to B. bigemina in cattle. Parasitol Res 1998:84:651-656.
Nichols M, Ibata G, Vallejos F. Prevalence of antibodies to Babesia bovis and Anaplasma marginale in dairy cattle in Bolivia. Trop Anim Health Prod 1980;12:48-49.
Smith R. Computer simulation of bovine babesiosis using a spreadsheet age-class model with weekly updates. J Agric Entomol 1991;8:297-308.
Smith R. Babesia bovis: computer simulation of the relationship between the tick vector, parasite and bovine host. Exp Parasitol 1983;56:27-40.