Ergonomiska förhållanden för mjölkare i olika mjölkstallar

Sammanfattning: Earlier studies of musculoskeletal problems with milkers working in milking parlour operators have shown that it is a physically demanding occupation. The extremities that are most exposed are neck, shoulders, hands and wrists. Those systems that have been studied in present cases are fishbone and some tandem barns. There have been changes in the working environment during the past ten years. The mechanisation has been developed for the better with automatically removers of the milking units and vertically adjustable floors in almost every daily milking barn. In other hand the milk production are more industrialised and more related to stress today. That causes working disorders despite rationalisation and better technical equipment. Basic statements to this work are collected from visits at five dairy farms with four of the systems parallel, fishbone, carousel and tandem. Measurements have been done of the distance from milker to the udder of the cow and the distance from the edge of the hollow to the udder. The depth of the hollow has also been measured. Calculations have been done of the shoulder flexors by biomechanics analysis to see the differences in loading on the milkers extremities between the systems. Any radical differences have not been shown between the systems in matter of extent or mechanisation. In other hand there are lots of individual variations in both humans and animals that affect the load on the milker.