Occurrence of Cryptosporidium in Anglonubian goats in the municipality of Teresina, state of Piauí, Brazil

Marcelo Richelly Alves de Oliveira, Carlos Syllas Monteiro Luz, A. F. Evangelista, Geandro Carvalho Castro, Katia Ds Bresciani, K. R. D. Santos, Severino Cavalcante de Sousa
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Abstract

Abstract This research aimed to investigate the occurrence of Cryptosporidium and correlate it with types of housing, feces consistency, and physiological parameters related to the reproductive status of Anglo-Nubian goats reared in the State of Piauí, Brazil. A total of 180 fecal samples were collected from 60 non-pregnant and lactating goats with a mean weight of 35 kg, a body condition score of 3.5, and a mean age of three years from an experimental herd at the Federal University of Piauí (UFPI). Oocysts of protozoa of the genus Cryptosporidium could be found in the studied animals using the modified Ziehl-Neelsen technique in fecal smears and the image analysis system to perform morphometry. Each independent variable in the quantitative and qualitative analyses, that is, weight, body condition score (BCS), physiological status (non-pregnant or lactating), feces consistency (normal, pasty, or diarrheal), and floor types (concrete and slatted), was tested with the dependent variable (positive samples, i.e., the presence of Cryptosporidium oocysts). Twenty-four out of the total number of fecal samples were considered positive for the presence of the protozoan, which means that 13.3% of the animals were parasitized. Moreover, 100% of the positive feces samples had normal consistency (firm) and all parasitized animals were reared in pens with a concrete floor. A statistical variation was observed in the BCS of parasitized animals compared to non-parasitized ones (p > 0.0253). The results showed that the occurrence of Cryptosporidium in experimental goats located in the municipality of Teresina, State of Piauí, Brazil, was considered low, requiring sanitary management measures to prevent infection in animals and humans. This is the first report of Cryptosporidium infection in goats in the State of Piauí.
巴西皮奥伊州特雷西纳市安格鲁努比亚山羊中隐孢子虫的发生率
摘要 本研究旨在调查隐孢子虫的发生情况,并将其与巴西皮奥伊州饲养的盎格鲁-努比亚山羊的饲养类型、粪便浓度以及与繁殖状况相关的生理参数联系起来。研究人员从皮奥伊联邦大学(UFPI)实验牧群中的 60 只非怀孕和哺乳期山羊身上采集了 180 份粪便样本,这些山羊的平均体重为 35 千克,体况评分为 3.5,平均年龄为 3 岁。使用改良的齐氏-奈尔森技术在粪便涂片中发现了隐孢子虫属原生动物的卵囊,并使用图像分析系统进行了形态测量。定量和定性分析中的每个自变量,即体重、体况评分(BCS)、生理状态(未怀孕或哺乳)、粪便稠度(正常、糊状或腹泻)和地板类型(水泥和板条),都与因变量(阳性样本,即存在隐孢子虫卵囊)进行了测试。在所有粪便样本中,有 24 份样本的隐孢子虫卵囊含量呈阳性,这意味着有 13.3% 的动物体内有隐孢子虫寄生。此外,100% 的阳性粪便样本浓度正常(坚实),而且所有寄生动物都饲养在铺有水泥地面的圈舍中。与未寄生的动物相比,寄生动物的 BCS 存在统计学差异(P > 0.0253)。结果表明,隐孢子虫在巴西皮奥伊州特雷西纳市实验山羊中的发生率较低,需要采取卫生管理措施以防止动物和人类感染隐孢子虫。这是皮奥伊州首次报告山羊感染隐孢子虫。
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