Department of Animal Health, Faculty of Agrarian and Animal Sciences, University of Caldas, Manizales, Colombia.
Meat Sci. 2013 Oct;95(2):256-63. doi: 10.1016/j.meatsci.2013.05.014. Epub 2013 May 16.
The aim of this study was investigate risk factors as possible causes for bruising and high muscle pH under commercial operating conditions in Colombia. Data was recorded for 86 journeys referring to 1179 animals. Carcasses were analyzed in terms of muscle pH and bruises (site, size, severity and shape). Our results indicate that truck load density, stops during transportation of cattle and the lairage time at the plant increased the risk of bruises appearing on carcasses. A lairage time of 18 to 24h at the plant increased the prevalence of bruises 2.1 times compared to lairage periods of between 12 and 18 h. Furthermore, intermittent stops during transit are a risk factor for the increase in the incidence of bruises. However, the transport time (up to 4h) was not related to the presence of bruises and high muscle pH. Finally, steers were found to have less risk of presenting a high muscle pH.
本研究旨在调查在哥伦比亚商业运营条件下导致瘀伤和肌肉 pH 值升高的潜在因素。记录了 86 次旅程的数据，涉及 1179 只动物。胴体的肌肉 pH 值和瘀伤（部位、大小、严重程度和形状）进行了分析。结果表明，卡车装载密度、运输过程中的停留时间以及在工厂的畜栏停留时间增加了胴体出现瘀伤的风险。与 12 至 18 小时的畜栏停留时间相比，在工厂的畜栏停留时间为 18 至 24 小时使瘀伤的患病率增加了 2.1 倍。此外，运输过程中的间歇性停留是瘀伤发生率增加的一个风险因素。然而，运输时间（长达 4 小时）与是否存在瘀伤和高肌肉 pH 值无关。最后，发现公牛出现高肌肉 pH 值的风险较低。
