Mycobacterium avium subsp. paratuberculosis antibodies in cows of low-tropic dairy herds in Colombia

IF 0.3 4区农林科学 Q4 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Revista Mvz Cordoba Pub Date : 2020-05-05 DOI:10.21897/rmvz.1782

N. Correa-Valencia, Ferney Arango-Lezcano, J. Fernández-Silva

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引用次数: 3

Abstract

Objective. To report the frequency of seropositivity against Mycobacterium avium subsp. paratuberculosis (MAP) and to explore the factors associated with the positive outcome, both at herd and animal level. Materials and methods. A cross-sectional study was carried out on 204 dairy cows, result of the crossing of different breeds, from five low-tropic dairy herds, located in three municipalities of the Provinces of Sucre and Cordoba (Colombia) in 2018. The animals were randomly selected, and blood samples were collected from each one. A commercial ELISA kit was used to analyze the sera, and the association between these variables and the result to ELISA (p<0.05) was explored. Results. The 17.2% (35/204; 95% CI: 12.0-22.3%) of the cows were positive for MAP by the ELISA test, and the five herds had seropositive animals. The herd-level variable presence of other ruminants in co-grazing with cattle in the last 2 years and the animal-level variables age and parity were associated with the positive ELISA results. Conclusions. The present study found that 17.2% of the cows and 100% of the herds were MAP positive by the ELISA test. Additionally, associated variables were identified that may be of interest to both producers and veterinarians and guide their approach to disease management.

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鸟分枝杆菌亚种哥伦比亚低热带奶牛群中奶牛的副结核抗体

目标。报告禽分枝杆菌亚种血清阳性的频率。并在畜群和动物水平上探索与阳性结果相关的因素。材料和方法。对204头奶牛进行了横断面研究，这些奶牛是2018年来自苏克雷和科尔多瓦省(哥伦比亚)三个市的五个低热带奶牛群不同品种杂交的结果。这些动物是随机选择的，并从每只动物身上采集血液样本。采用市售ELISA试剂盒对血清进行分析，并探讨这些变量与ELISA结果的相关性(p<0.05)。结果。17.2% (35/204;95% CI: 12.0 ~ 22.3%) ELISA检测MAP阳性，5个畜群均有血清阳性。近2年与牛共放牧的其他反刍动物的畜群水平变量以及动物水平变量年龄和胎次与ELISA阳性结果相关。结论。本研究发现17.2%的奶牛和100%的牛群经ELISA检测MAP阳性。此外，还确定了生产者和兽医可能感兴趣的相关变量，并指导他们的疾病管理方法。

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来源期刊

Revista Mvz Cordoba 农林科学-奶制品与动物科学

CiteScore

0.70

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： The Journal MVZ Córdoba is an open access international scientific journal financed and edited by the University of Córdoba (Colombia). The journal publishes quarterly, continuously in PDF, XML, Epub, original articles, literature reviews, brief communications and clinical cases, peer-reviewed (double-blind) in Spanish and English, which are related to the agricultural and veterinary sciences. The journal is directed to natural and legal persons of veterinary medicine, animal husbandry, public health, epidemiology, aquaculture, biology, basic biomedical sciences and biotechnology and constitutes a space for academic and scientific discussion around the work of professionals in Veterinary Medicine and Zootechnics. Four-monthly publication. "The Journal MVZ Córdoba supports the policies for registration of clinical trials of the World Health Organization (WHO) and the International Committee of Medical Journal Editors (ICMJE), since it recognizes the importance of these initiatives for international registration and dissemination. of information about clinical studies, in open access. As a result, since 2007, the journal MVZ Córdoba only publishes clinical research articles that have received an identification number in one of the Clinical Trial Registries validated by the criteria established by WHO and ICMJE, whose addresses are available in the ICMJE website. The identification number is recorded at the end of the summary. "