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Analysis of Instantaneous Milk Flow Rate Patterns by M. J. Delwiche, ; N. R. Scott, ; C. J. Drost, is a Agricultural and Biological Sciences article available to read on EtoBox.

What is Analysis of Instantaneous Milk Flow Rate Patterns about?

M EASUREMENTS of instantaneous milk flow rates from unsupported teats (i.e., linerless teat cups) and corresponding analysis of flow charcteristics are presented in this report. Milk flow measurements were made with an ultrasonic flow meter, using techniques described in a previous report (Delwiche, Scott, and Drost, 1980). Data were gathered according to a V factorial experiment design, conducted over 16 days on four cows. Parameters investigated were pulsation frequency, 1.0 and 0.3 Hz; pulsation ratio, 63 and 42 percent milking vacuum, 51 and 41 kPa; and quarter, front (right) and rear (left). Milk flow patterns from each test are divided into three stages: the low flow beginning stage (stage 1), the high average flow rate stage (stage 2), and the tapering off stage (stage 3). Within each stage, sequences of four to 15 milk flow and vacuum pulses are analysed. Treatment effects during stages 1 to 3 are tested for significance by analysis of variance. Peak and average milk flow rates per pulsation cycle are significantly higher for the lower pulsation frequency (0.3 vs. 1.0 Hz). Similarly, the higher vacuum level (51 vs. 41 kPa) yielded significantly higher flow rates. Difference

Who reads Analysis of Instantaneous Milk Flow Rate Patterns?

Author

M. J. Delwiche, ; N. R. Scott, ; C. J. Drost,

Publisher

American Society of Agricultural and Biological Engineers; American Society of Agricultural Engineers; American Society of Agricultural and Biological Engineers (ASABE) (ISSN 0001-2351)

Published

1982

Language

EN

Field

Agricultural and Biological Sciences (Physical Sciences)