Abstract
The relative effect on lipolysis of four milking systems was investigated. Pipeline milkers induced the greatest amount of lipolysis in milk followed in descending order of extent of lipolysis by bucket milkers with sputnick conveyors (140-liter containers on wheels for transferring milk from cows to bulk cooling tanks), bucket milkers with dumping stations, and bucket milkers with conventional carrying pails. Of the pipeline systems, parlor systems employing weigh jars induced more lipolysis in milk than around-the-barn installations and parlors without weigh jars. The latter system produced the least lipolysis. Weigh jars in parlor systems apparently have a greater effect on lipolysis than the longer lines and greater number of elbows and other fittings generally encountered in around-the-barn installations. To minimize lipolysis caused by weigh jars, these devices should be disconnected during routine milking operations and only used on days when weights are recorded.
Published Version
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