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首页> 外文期刊>Journal of food protection >Reliability of an ordinal rating system for assessing the amount of mud and feces (tag) on cattle hides at slaughter.
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Reliability of an ordinal rating system for assessing the amount of mud and feces (tag) on cattle hides at slaughter.

机译：序数评定系统可用于评估屠宰时牛皮革上的泥和粪便（标签）的数量。

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摘要

Initially baseline data were obtained by a single person assessing 2417 cattle for 1 month at an Ontario beef processing plant. There was a strong tendency for animals within sale-lots to have a similar total tag (mud, faeces and bedding) score (intralot correlation = 0.42). Baseline data were summarized by fitting a linear model describing an individual's total tag score as the sum of their lot mean tag score (LMTS) plus an amount representing normal variation within the lot. LMTSs predicted by the linear model were adequately described by a beta distribution with parameters nu = 3.12 and omega = 5.82 scaled to fit on the 0-to-9 interval. Five individuals trained in use of the tag scoring system, made 1334 tag score observations in a commercial abattoir, allowing reliability to be assessed at the individual level and at the lot level. High values for reliability were obtained for individual total tag score (0.84) and lot total tag score (0.83); these values suggest that the tag scoring system could be used in the marketing and slaughter of Ontario beef cattle to improve the cleanliness of animals presented for slaughter in an effort to control the entry of microbial contamination into abattoirs.
机译：最初的基线数据是由一个人在安大略省牛肉加工厂评估1个月的2417头牛获得的。销售场内的动物具有类似的总标签（泥浆，粪便和被褥）得分的强烈趋势（场内相关系数= 0.42）。通过拟合线性模型来总结基线数据，该线性模型将个人的总标签得分描述为他们的批次平均标签得分（LMTS）加上代表批次中正常变化的数量之和。线性模型预测的LMTS通过参数nu = 3.12和omega = 5.82的beta分布进行了充分描述，比例调整为适合0到9的区间。五名接受过标签评分系统使用培训的人员在一个商业屠场中进行了1334次标签评分观察，从而可以在个人层面和批次层面评估可靠性。对于单独的总标签得分（0.84）和批次总标签得分（0.83），获得了较高的可靠性值；这些值表明，标签评分系统可用于安大略肉牛的销售和屠宰，以提高出栏动物的清洁度，从而努力控制微生物污染进入屠宰场。

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