Salmonella enterica diversity and antimicrobial resistance profile in broiler slaughterhouse by-products.

IF 0.7 4区农林科学 Q4 VETERINARY SCIENCES Veterinaria italiana Pub Date : 2022-12-30 DOI:10.12834/VetIt.2434.14968.1

Juliana Bonifácio Alcântara, Poliana Carneiro Martins, Eduardo de Paula Nascente, Marcos B Café, Lívia Mendonça Pascoal, Amanda Vargas Teles, Valéria de Sá Jayme, Maria Auxiliadora Andrade

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Abstract

The aim of this study was to investigate the presence of Salmonella enterica in by‑products (feathers, spleen, cecum, and crop) from broiler slaughterhouses as well as to determine the antimicrobial resistance profile of the identified serovars. Forty‑four lots of broilers in nine slaughterhouses located in the central‑west region of Brazil were evaluated. Samples of spleen, feathers, cecum, and crop were collected in a pool and a total of 1,232 samples were evalueted. These were processed for conventional bacterial isolation and subjected to biochemical and serological tests to identify serovars. The identified serovars were subjected to the antimicrobial susceptibility test, where nine different antimycotics were investigated. Salmonella enterica was identified in 7.1% (87/1,232) of all evaluated samples, mostly in feathers (12.3%) and spleen (8.1%). The most frequent serovars were Schwarzengrund (29.9%), Agona (25.4%), Mbandaka (12.7%) and Anatum (8.1%). Nine serovars showed resistance to at least one antimicrobial, especially serovars Mbandaka, Infantis and Typhimurium. Amoxicillin and tetracycline were not effective in inhibiting at least five and four serovars, respectively.

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肉鸡屠宰场副产品中肠沙门氏菌多样性及耐药性分析。

本研究的目的是调查肉鸡屠宰场副产品(羽毛、脾脏、盲肠和作物)中肠沙门氏菌的存在情况，并确定所鉴定血清型的抗微生物药物耐药性谱。对巴西中西部地区9个屠宰场的44批肉鸡进行了评估。收集脾脏、羽毛、盲肠和嗉囊样本，共评价1232份样本。对这些细菌进行常规的细菌分离处理，并进行生化和血清学试验以确定血清型。鉴定的血清型进行了抗菌药敏试验，其中调查了9种不同的抗真菌药物。在所有评估样本中，有7.1%(87/ 1232)检出肠道沙门氏菌，主要分布在羽毛(12.3%)和脾脏(8.1%)。最常见的血清型为:Schwarzengrund(29.9%)、Agona(25.4%)、Mbandaka(12.7%)和Anatum(8.1%)。9个血清型对至少一种抗菌素具有耐药性，尤其是Mbandaka、Infantis和鼠伤寒血清型。阿莫西林和四环素分别对至少5种和4种血清型无效。

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来源期刊

Veterinaria italiana VETERINARY SCIENCES-

CiteScore

1.50

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The journal was created as the Croce Azzurra in 1950. A quarterly peer-reviewed journal devoted to veterinary public health and other aspects of veterinary science and medicine, Veterinaria Italiana is published by the Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise ‘G. Caporale’ (Istituto Zooprofilattico Sperimentale dell''Abruzzo e del Molise) in Teramo, Italy. The goal of the journal is to provide an international platform for veterinary public health information from Italy and other countries, particularly those in Eastern Europe and Africa, Asia and South America. Veterinarians and veterinary public health specialists are encouraged to share their knowledge and experience on this platform.