Hail Bruising of Fed Cattle

T. Schmidt, Lynn Unruh, L. Perino, T. Montgomery
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Abstract

On May 25, 1999, a storm producing hail approximately 1 ¾ to 3¾ inches in diameter crossed over a feed yard. On four occasions following the storm, 409 carcasses from six pens were observed at an abattoir. On day 1, 29 carcasses were examined at the abattoir and in the grading cooler. On days 10, 15, and 49, additional cattle (n = 117, 173, and 90, respectively) were examined at the abattoir only. On day 16 following the first storm, a second storm, producing approximately 1 ¾-inch-diameter hail, crossed over the feed yard. Bruises were classified into three size categories, into short- and long-duration categories, and location was recorded. One hundred, 85, 54, and 44% of the carcasses exhibited bruises on days 1, 10, 15, and 49, respectively. On days 1, 10, 15, and 49, 100, 98, 65, and 27% of bruises were classified as short-duration. Multiple bruises were observed on 100, 75, 42, and 16% of carcasses on days 1, 10, 15, and 49, respectively. Storms producing hail approximately 3¾ inches in diameter have the potential to cause extensive bruising in cattle in open feed yards. Cattle sold within 15 days of such storms may experience significant hail-associated carcass trim loss, but by day 49 bruising appears to return to baseline levels.
喂过牛的冰雹瘀伤
1999年5月25日,一场产生了直径约为1¾到3¾英寸冰雹的风暴穿过了一个饲料场。在风暴过后的四次中,在一个屠宰场观察到来自六个围栏的409具尸体。第1天在屠宰场和分级冷却器检查29头胴体。在第10、15和49天,只在屠宰场检查了另外的牛(n = 117、173和90头)。在第一场风暴过后的第16天,第二场风暴穿过饲料场,产生了直径约1又3 / 4英寸的冰雹。瘀伤分为三种大小,短时间和长时间,并记录位置。分别有100、85、54和44%的尸体在第1、10、15和49天出现瘀伤。在第1、10、15、49、100、98、65天,27%的擦伤被归类为短时间。在第1天、第10天、第15天和第49天,分别有100、75、42和16%的胴体出现多发瘀伤。产生直径约3¾英寸的冰雹的风暴有可能导致露天饲料场的牛大面积瘀伤。在这样的风暴过后15天内售出的牛可能会遭受与冰雹相关的严重胴体损失,但到第49天,瘀伤似乎会恢复到基线水平。
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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