The aim of this study was to determine the seroprevalence of antibodies against B. bovis and B. bigemina in calves from the region of Araguaína, State of Tocantins, Brazil. In this research we used sera obtained from 506 calves, from both genders and of 8 to 24 months old, to detect antibodies by indirect Enzyme-Linked Immunosorbent Assay (ELISA-test). Statistical analysis of the data was performed using the Chi-square (χ²) test with Yates correction. The seroprevalence obtained was 90.5 and 91.7% for B. bigemina and B. bovis, respectively, characterizing the region as an area of enzootic stability for the species analyzed. The seroprevalence to B. bovis showed higher positivity among calves 19-24 months old.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1590/s1984-29612010000300008 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Tick fever agents in Holstein calves grazing in a tropical region: predisposing factors, impact on milk production, productivity, and role of Rhipicephalus microplus in epidemiology.
Vet Parasitol
October 2024
Center of Veterinary Parasitology, School of Veterinary and Animal Science, Federal University of Goiás, Goiânia, Goiás, Brazil; Department of Biosciences and Technology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia, Goiás, Brazil. Electronic address:
Article Synopsis
- The study assessed the effects of the tick Rhipicephalus microplus on Holstein calves' health and productivity on a tropical dairy farm, focusing on factors impacting tick fever (TF) outbreaks.
- It involved tracking rectal temperatures and blood sampling of calves to diagnose TF agents like Anaplasma marginale and Babesia species, leading to specific treatment protocols.
- Results indicated that factors like colostrum quality, embryo transfer status, and weaning weight affected the recurrence of TF, with each recurrence reducing first lactation milk production by over 200 liters.
Analysis of management factors influencing Anaplasma marginale transmission.
Vet Parasitol
October 2024
Instituto de Investigación de la Cadena Láctea (IDICAL, INTA-CONICET), Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Rafaela (INTA E.E.A. Rafaela), Ruta 34 km 227, Rafaela, Santa Fe CP 2300, Argentina.
The aim of this study was to identify factors that play a key role in the epidemiology of bovine anaplasmosis by adapting a model primarily developed for cattle babesiosis. A cross-sectional observational study was conducted to study the proportion of calf herds in endemic stability/instability for A. marginale in a semi-arid area of Argentina.
View Article and Find Full Text PDFMolecular prevalence of , and and their associations with Mafriwal cattle's age groups.
J Adv Vet Anim Res
June 2024
Department of Veterinary Paraclinical Studies, Faculty of Veterinary Medicine, Universiti Malaysia Kelantan, Kota Bharu, Kelantan, Malaysia.
Objective: This study was designed to determine the molecular prevalence of hemoparasites and their associations with Mafriwal cattle's age groups.
Materials And Methods: Blood samples were taken from the coccygeal veins of calves ( 92), yearlings ( 95), lactating ( 90), and dry ( 94) cows, which were subjected to microscopic and molecular identification of hemoparasites. The prevalence rate was determined based on the proportion of infected samples in the observed samples.
Evaluation of different supportive treatments during packed cell volume replacement in calves naturally infected with tick fever agents.
Vet Res Commun
August 2024
Veterinarian - Scarpa Consultoria Ltda., Jataí, Goiás, Brazil.
Article Synopsis
- The study assessed the impact of various supportive treatments on improving packed cell volume (PCV) in dairy calves infected with tick fever agents, following specific antibiotic treatments.
- Five supportive products were tested on Girolando female calves, aged four to six months, which were naturally infected and infested with R. microplus, with evaluations made on days 0, 3, and 7 post-treatment.
- Results indicated that while oral or intravenous vitamins and minerals improved PCV, certain tonics showed no positive effects, and only Type III iron injections significantly raised hemoglobin and PCV levels, highlighting the need for further research on iron supplementation methods.
A small proportion of Zebu genetic background in crossbred calves may not be enough to improve resistance against natural bovine Babesia spp. infections.
Vet Parasitol
June 2024
Instituto de Zootecnia, Nova Odessa, São Paulo, Brazil. Electronic address:
The main objective of cattle breeders in tropical and subtropical regions is to acquire animals with taurine-productive traits adapted to the broad weather range of these regions. However, one of the main challenges on using taurine genetics in these areas is the high susceptibility of these animals to tick-borne diseases. Consequently, the present study evaluated from 10 November 2021-19 April 2022, the over 13 assessments, the Babesia bovis and Babesia bigemina DNA loads and the IgG anti-B.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!