巴西东北部奶牛场葡萄球菌和哺乳动物亚临床乳腺炎对经济的影响。

IF 2.1 4区 生物学 Q3 MICROBIOLOGY Brazilian Journal of Microbiology Pub Date : 2024-10-22 DOI:10.1007/s42770-024-01548-y
Amanda Thaís Ferreira Silva, Juliano Leonel Gonçalves, Marcos Veiga Dos Santos, Rodolfo de Moraes Peixoto, Roger I Cue, Rinaldo Aparecido Mota
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引用次数: 0

摘要

本研究旨在评估金黄色葡萄球菌以及非金黄色葡萄球菌和乳酸菌(NASM)引起的亚临床乳腺炎对奶牛场经济收益的影响。我们从位于巴西东北部伯南布哥州阿格里斯特地区的五个奶牛场的数据库中收集了连续三个月的数据。共有 155 头健康奶牛的 155 个乳区被归入健康组。与此同时,187 头奶牛的 257 个乳区在金黄色葡萄球菌或 NASM 检测中呈阳性,被归入感染组。乳区感染对经济收益的影响是根据线性混合模型,按照健康奶牛与感染奶牛的牛奶样本的牛奶支付标准进行估算的。产奶量和奶价对经济收益有影响,二者因牛群、胎次、泌乳阶段、分析期和引起亚临床乳腺炎的病原体类型等因素而异。在考虑病原体对 1 季度和≥ 2 季度感染的长期影响时,NASM 感染(每头奶牛每天减少 0.41 至 0.65 美元)和金黄色葡萄球菌感染(每头奶牛每天减少 0.25 至 0.36 美元)造成的平均经济收益减少。虽然在健康奶牛与感染 NASM 或金黄色葡萄球菌的奶牛之间没有观察到明显的经济收益差异,但收集有关这些病原体的数据对于更精确地评估亚临床乳腺炎的经济影响以及制定强化的预防和控制方法非常重要。
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Economic impact of staphylococcal and mammaliicoccal subclinical mastitis in dairy herds from Northeast Brazil.

This study aimed to assess the impact of S. aureus as well as Non-aureus Staphylococci and Mammaliicocci (NASM) subclinical mastitis-causing in the economic return in dairy herds. Data were gathered from the databases of five dairy herds located in the Agreste region of Pernambuco state, Northeastern Brazil, over a period of three consecutive months. A total of 155 mammary quarters from 155 healthy cows were categorized into the healthy group. Meanwhile, 257 mammary quarters from 187 cows that tested positive for either S. aureus or NASM were categorized into the infected group. The effect of mammary quarter infection in economic return was estimated using milk payment criteria on milk samples from healthy vs. infected cows based on a linear mixed model. Milk yield and milk price influenced the economic return, and both varied according to factors like herd, parity, stage of lactation, period of analysis, and the type of pathogen causing subclinical mastitis. There was a reduction in the average economic return caused by NASM infection (by 0.41 to 0.65 US$/cow/day) and S. aureus infection (by 0.25 to 0.36 US$/cow/day), when considering the effect of the pathogen over time for 1 and ≥ 2 infected quarters. Although no significant differences were observed in economic return between healthy cows and those infected with NASM or S. aureus, it is important to collect data on these pathogens for a more precise assessment of the economic impact of subclinical mastitis and for developing enhanced approaches for prevention and control.

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来源期刊
Brazilian Journal of Microbiology
Brazilian Journal of Microbiology 生物-微生物学
CiteScore
4.10
自引率
4.50%
发文量
216
审稿时长
1.0 months
期刊介绍: The Brazilian Journal of Microbiology is an international peer reviewed journal that covers a wide-range of research on fundamental and applied aspects of microbiology. The journal considers for publication original research articles, short communications, reviews, and letters to the editor, that may be submitted to the following sections: Biotechnology and Industrial Microbiology, Food Microbiology, Bacterial and Fungal Pathogenesis, Clinical Microbiology, Environmental Microbiology, Veterinary Microbiology, Fungal and Bacterial Physiology, Bacterial, Fungal and Virus Molecular Biology, Education in Microbiology. For more details on each section, please check out the instructions for authors. The journal is the official publication of the Brazilian Society of Microbiology and currently publishes 4 issues per year.
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