Presence of Cryptosporidium spp. in calves from dairy herds in Northern Antioquia, Colombia

IF 0.4 4区农林科学 Q4 VETERINARY SCIENCES

Arquivo Brasileiro De Medicina Veterinaria E Zootecnia Pub Date : 2023-10-01 DOI:10.1590/1678-4162-13043

I.T.L. Aguilar, M.P.E. Cadena, B.C.T. López, H.B. Llano

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Abstract

ABSTRACT Cryptosporidium spp. are important enteropathogen protozoan parasites that infect humans and other animals throughout the world. Cryptosporidiosis in cattle industry leads to considerable economic losses due to diarrhea, dehydration, growth retardation, weight loss, and possibly death, however, data on the occurrence ofCryptosporidiumspp. in cattle in Colombia are limited. Therefore, this study aimed to investigate the occurrence and possible factors associated to the excretion of Cryptosporidium spp. oocyst in pre-weaned calves from dairy farms in Northern Antioquia, Colombia. In addition, Sheather’s sugar floatation (SSF), and Modified Ziehl-Neelsen staining (MZN) methods were compared. A total of 41 fecal samples were collected from calves between 1 and 92 days of age of which 23 were positive (56.1%). Crossbreed calves were nine times less susceptible than purebred dairy cattle to excretion of Cryptosporidium spp. oocysts (OR=0.10). MZN was the best technique for the detection of oocysts in fecal samples, however, the mean number of days to detect cryptosporidial oocysts was lower for the SSF method. Cryptosporidium is widespread among calves under 2 months of age in dairy herds of Northern Antioquia, although further investigations considering a greater number of farms and animals are necessary.

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哥伦比亚安蒂奥基亚北部奶牛群中隐孢子虫的存在

隐孢子虫是一种在世界范围内感染人类和其他动物的重要的肠原动物寄生虫。隐孢子虫病在养牛业中引起腹泻、脱水、生长迟缓、体重减轻，甚至可能导致死亡，导致相当大的经济损失，然而，关于隐孢子虫发生的数据。在哥伦比亚的牛中因此，本研究旨在调查哥伦比亚安蒂奥基亚北部奶牛场断奶前犊牛隐孢子虫卵囊的发生情况及其可能的相关因素。此外，还比较了Sheather糖浮法(SSF)和改良Ziehl-Neelsen染色法(MZN)。共采集1 ~ 92日龄犊牛粪便样本41份，其中23份呈阳性(56.1%)。杂交犊牛对隐孢子虫卵囊排泄的敏感性比纯种奶牛低9倍(OR=0.10)。MZN是检测粪便中隐孢子虫卵囊的最佳方法，但SSF法检测隐孢子虫卵囊的平均时间较短。隐孢子虫广泛存在于安蒂奥基亚北部奶牛场2个月以下的犊牛中，但仍有必要对更多的农场和牲畜进行进一步调查。

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来源期刊

Arquivo Brasileiro De Medicina Veterinaria E Zootecnia 农林科学-兽医学

CiteScore

0.80

自引率

25.00%

发文量

111

审稿时长

9-18 weeks

期刊介绍： Publica artigos originais de pesquisa sobre temas de medicina veterinária, zootecnia, tecnologia e inspeção de produtos de origem animal e áreas afins relacionadas com a produção animal. Atualmente a revista mantém 628 permutas (419 internacionais e 209 nacionais), sendo um verdadeiro suporte para o recebimento de periódicos pela Biblioteca da Escola. A partir de 1999, a Escola de Veterinária delegou à FEP MVZ Editora o encargo do gerenciamento e edição de todas suas publicações, inclusive do Arquivo, ficando somente com o apoio logístico (instalações, equipamentos, pessoal etc.). O apoio financeiro é exercido pelo CNPq/FINEP e pela própria FEP MVZ.