Tucker W B, Adams G D, Lema M, Aslam M, Shin I S, Le Ruyet P, Weeks D L
Animal Science Department, Oklahoma State University, Stillwater 74078.
J Dairy Sci. 1992 Sep;75(9):2382-7. doi: 10.3168/jds.S0022-0302(92)77999-5.
Our objective was to evaluate a subjective edema rating system to quantitate edema severity. Edema was evaluated with 20 nulliparous Holstein heifers from 3 wk before their expected calving date until 3 wk postpartum. Severity of udder edema was evaluated independently daily by five people throughout the 68-d experiment; a 10-point rating system (0 = no edema, 10 = severe edema) was used. One of the people developing the scoring system served as the official scorer. The accuracy of the rating system, defined as the closeness of test evaluator scores to official scores, was highest for scores 2 to 8. The precision of the system, identified by the standard error of the mean, was similar for each score in the rating system. The largest disagreement between official and test evaluator scores was evident postpartum. The large number of defined points in this rating system and the similarity between official and test scores in this study indicate the usefulness of this tool to evaluate precisely the severity of edema in dairy cattle.
我们的目标是评估一种主观水肿评分系统以量化水肿严重程度。对20头未产荷斯坦小母牛从预期产犊日期前3周直至产后3周进行水肿评估。在整个68天的实验中，由五人每天独立评估乳房水肿的严重程度；采用10分制评分系统（0 = 无水肿，10 = 严重水肿）。制定评分系统的人员之一担任官方评分员。评分系统的准确性定义为测试评估员分数与官方分数的接近程度，在分数2至8时最高。该系统的精度通过均值标准误差确定，评分系统中的每个分数的精度相似。官方和测试评估员分数之间最大的差异在产后最为明显。该评分系统中定义的分数数量众多以及本研究中官方分数与测试分数之间的相似性表明该工具可用于精确评估奶牛水肿的严重程度。
