The on-farm factors increasing the incidence of dark cutting were studied in 3145 pasture raised cattle consigned in 66 lots. Animal, environmental and farm management factors were recorded and pasture quantity, quality and mycotoxin concentrations were measured. The relative risk of dark cutting decreased by 26% in cattle grazing pastures with magnesium concentrations exceeding 0.24%. There was a 50% increase in relative dark cutting risk of cattle drinking from dams compared to drinking from troughs. Feeding supplements (hay/silage) in the last 7 days prior to slaughter reduced the relative risk of dark cutting by 25%. A high prevalence of mycotoxins was detected in pastures across all farms. In this case pasture ergot alkaloid concentrations above 600PPB increased the relative risk of dark cutting by 45%, while the presence of FumonisinB1 increased risk by 58%. In contrast the presence of 3acetyldeoxynivalenol reduced the relative dark cutting risk by 37%. Sex also affected the incidence of dark cutting, with heifers less likely to cut dark than steers by 47%.

在66批次的3145头牧场饲养的牛中，研究了增加暗切发生率的农场因素。记录动物，环境和农场管理因素，并测量牧场数量，质量和霉菌毒素浓度。在镁含量超过0.24％的牛放牧牧场中，暗割的相对风险降低了26％。与从槽中饮水相比，从水坝中饮水的牛的相对暗切风险增加了50％。在屠宰前的最后7天补充饲料（干草/青贮饲料）可使黑割的相对风险降低25％。在所有农场的牧场中都发现了很高的霉菌毒素感染率。在这种情况下，高于600PPB的牧场麦角生物碱浓度会使暗切的相对风险增加45％，而伏马菌素B1的存在使患病风险增加58％。相反，3乙酰基脱氧雪腐烯酚的存在使相对暗切风险降低了37％。性别也影响了暗切的发生率，小母牛切黑皮的可能性比ste牛低47％。