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Likelihood of Droplet Impacts on Teat Ends during Induced Milking Vacuum Fluctuations

Genetics and Management Laboratory, Beltsville Agricultural Research Center, Science and Education Administration, US Department of Agriculture, Beltsville, MD 20705

ABSTRACT

Probability of impact of milk droplets against teat ends as a result of abrupt loss of milking vacuum was assessed with impact-sensing transducers in the milking unit. Impacts were more likely in non-vented than vented claws, during milk flow greater than .25 kg/min than during reduced flow at the end of milking, and if liners were opening or open at the time of vacuum loss. During reduced milk flow, probability of impact was correlated with vacuum fluctuation in the claw and was less with low milk lines than with high milk lines.

¹ Dairy Equipment Co., P.O. Box 8050, Madison, WI 53708.