Distribution Characteristics and Factors Influencing Culturable Bacterial Bioaerosols on a Dairy Farm in Northern China

IF 3.3 2区农林科学 Q1 AGRONOMY

Agriculture-Basel Pub Date : 2023-09-03 DOI:10.3390/agriculture13091752

Lin Ru, Luyu Ding, Shuhui Deng, Qifeng Li, Wanying Zhao, Rong Wang, Jiawei Li, Yujian Lu, Chunxia Yao

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Abstract

Studying the distribution characteristics of bioaerosols and their interaction with the environment is crucial for dairy farms. The distribution of aerosols differs in dairy farming from farming of other livestock, and their sensitivity to environmental factors varies across sites. Field experiments were conducted in an intensive commercial dairy farm in Northern China to investigate the horizontal and vertical distribution of culturable bacterial bioaerosols. Concentration levels and particle size ranges were analyzed, and the impact of multiple environmental factors on culturable bacterial bioaerosols was assessed. Significant variations in culturable bacterial bioaerosol concentrations were observed across eight functional zones, ranging from 1.14 × 103 to 7.35 × 103 CFU/m3. Culturable bacterial bioaerosols exhibited consistent carrier distribution patterns across six different size ranges. Vertical analysis revealed significantly higher culturable bacterial bioaerosol concentrations at a 1 m height compared to 4 m (p < 0.05), while similar size distributions were observed at different heights of the same sampling location. The top three environmental factors influencing culturable bacterial bioaerosol concentrations were PM100 concentration, wind direction, and air temperature. This study provides insights into the distribution characteristics of culturable bacterial bioaerosols on dairy farms and their response to environmental factors. The findings serve as a reference for evaluating bioaerosol emissions and establishing daily disinfection management measures on dairy farms.

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中国北方某奶牛场可培养细菌生物气溶胶分布特征及影响因素

研究生物气溶胶的分布特征及其与环境的相互作用对奶牛场至关重要。气溶胶在奶牛养殖中的分布不同于其他牲畜养殖，它们对环境因素的敏感性也因地而异。在中国北方的一个集约化商业奶牛场进行了野外试验，研究了可培养细菌生物气溶胶的水平和垂直分布。分析了可培养细菌生物气溶胶的浓度水平和粒径范围，并评估了多种环境因素对可培养细菌生物气溶胶的影响。8个功能区的可培养细菌生物气溶胶浓度变化显著，范围为1.14 × 103 ~ 7.35 × 103 CFU/m3。可培养细菌生物气溶胶在六个不同大小范围内表现出一致的载体分布模式。垂直分析显示，1 m高度的可培养细菌生物气溶胶浓度显著高于4 m (p < 0.05)，而同一采样位置不同高度的可培养细菌生物气溶胶浓度分布大小相似。影响可培养细菌生物气溶胶浓度的前3位环境因子是PM100浓度、风向和气温。本研究揭示了可培养细菌生物气溶胶在奶牛场的分布特征及其对环境因子的响应。研究结果可为奶牛养殖场生物气溶胶排放评价及制定日常消毒管理措施提供参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Agriculture-Basel Agricultural and Biological Sciences-Food Science

CiteScore

4.90

自引率

13.90%

发文量

1793

审稿时长

11 weeks

期刊介绍： Agriculture (ISSN 2077-0472) is an international and cross-disciplinary scholarly and scientific open access journal on the science of cultivating the soil, growing, harvesting crops, and raising livestock. We will aim to look at production, processing, marketing and use of foods, fibers, plants and animals. The journal Agriculturewill publish reviews, regular research papers, communications and short notes, and there is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental and/or methodical details must be provided for research articles.