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首页> 外文期刊>Revista Brasileira de Ciência Avícola >Multi-Attribute Evaluation and Selection of Broiler House for the Low Prevalence of Footpad Lesion
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Multi-Attribute Evaluation and Selection of Broiler House for the Low Prevalence of Footpad Lesion

机译：足部病变患病率低的肉鸡场多属性评价与选择

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Intensive broiler production requires large flock density, which compromises litter quality and increases the prevalence of footpad lesions. The present study aimed at comparing the incidence of footpad dermatitis of broilers reared in two different rearing environments. Data from two broiler houses were recorded during 42 d. Air temperature and relative humidity; litter moisture, pH, and temperature; footpad surface temperature; and the incidence of footpad lesions was investigated. Litter quality was analyzed in a 2 x 4 factorial arrangement, with two house types (dark house or open-sided house) and four rearing phases (21, 28, 35, and 42 d of growth), with four replicates per treatment using 12 replicates. Four replicates were used for analyzing the air environment data. For the footpad lesion identification, a randomly factorial scheme of recording the surface temperature was built (2 x 2) using two houses, and the broiler sex using 15 replicates in the grow-out stages. The measures of association (odds ratio and risk ratio) were calculated. The multi-criteria analysis (Analytic Hierarchy Process - AHP) was applied for estimating the house that provided less prevalence of lesions. The field data did not provide enough evidence for selection of a particular house with less incidence of footpad dermatitis. However, when applying the measures of association data, and corresponding literature data to the AHP, there was an indication that the dark-house provided broiler rearing condition that reduced the incidence of footpad lesions.
机译：密集的肉鸡生产需要较高的鸡群密度，这会影响垫料质量并增加足垫病的发生率。本研究旨在比较在两种不同饲养环境下饲养的肉鸡脚垫皮炎的发生率。在42天内记录了来自两个肉鸡场的数据。空气温度和相对湿度;垫料水分，pH和温度;脚垫表面温度;并调查了脚垫病变的发生率。凋落物质量以2 x 4因子分析进行分析，有两种鸡舍类型（黑鸡舍或开放式鸡舍）和四个饲养阶段（生长的21、28、35和42天），每次处理重复四次，每次12次复制。使用四个副本来分析空气环境数据。为了识别脚垫病灶，使用两个房屋建立了一个随机因子记录表面温度记录方案（2 x 2），在成长期中使用了15个重复来建立肉鸡性别。计算关联度（奇数比和风险比）。多标准分析（层次分析法-AHP）用于评估病灶较少的房屋。现场数据没有提供足够的证据来选择脚垫皮炎发生率较低的特定房屋。但是，将关联数据和相应的文献数据应用于AHP时，有迹象表明，黑屋提供的肉鸡饲养条件降低了脚垫病的发生率。

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