抽象
影响奶牛养殖的呼吸后果的因素还没有被广泛研究至今。为了评估对呼吸道症状和肺功能谷仓饲料烘干的效果,在杜省(法国)进行5年随访研究。雄性奶农的队列在1990年进行了分析的初始横截面的结果表明,谷仓干燥饲料可以保护肺功能受损奶农。在1995年,113谷仓干燥农民(92%)和231传统干燥农民(84%)再分析。谷仓和传统饲料干燥农民的症状和肺功能的肺活量措施患病率进行了比较。控制年龄,吸烟状况,海拔高度和累积暴露,谷仓干燥农民相比传统干燥农民后有慢性支气管炎的流行率较低(4比10%; P <0.05),并且在一个用力呼气量的略微更高的值第二(FEV1)(p值= 0.06)和FEV1 /肺活量(VC)(p <0.01)。尽管如此,呼吸功能参数的下降幅度并不两组间显著不同。正和显著相关联的肺功能参数纵向下降变量是:年龄(FEV1,FEV1 / VC);高度(VC,FEV1)和慢性支气管炎和呼吸困难在初始调查(FEV1 / VC)。 Persistence and emergence of chronic bronchitis, dyspnoea and symptoms at exposure were also significantly associated to an acceleration in the annual decline of the respiratory function. In conclusion, the mode of fodder drying does not seem to significantly influence the decline in lung function. Nevertheless, this study confirms the results of the initial cross-sectional analysis and supports the hypothesis that barn drying fodder may have a protective effect on respiratory health in dairy farming.