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Cow teat hysteresis as affected by time of measurement
Authors: R. Gupta and S.Y. Reitsma
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Download file: https://library.csbe-scgab.ca/docs/journal/31/31_2_153_ocr.pdf
Published in: CBE Journal » CBE Journal Volume 31 (1989)
Download RAW file: https://library.csbe-scgab.ca/docs/journal/31/31_2_153_raw.pdf
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Description: The effect of time of measurement (before, during, and after milking) on hysteresis of the cow teat end is reported. Hysteresis measurement is based on external teat end diameter changes in response to step input changes of vacuum level (0 - 30 kPa and vice versa) to the outside of the teat. These measurements were made on all four teats of each of four cows. Measurable teat and expansion and contraction took place both before and during milking, but not after milking. Hysteresis ratio was significantiy (P< =0.05) higher during than before milking. This suggests teat end congestion as milking progresses. Also, increased (P<0.01) teat delay rise time during versus before milking suggests a delayed response of teats due to congestion. Adequate liner closure around the teat end will help reduce congestion and the incidence of mastitis.
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Citation: R. Gupta and S.Y. Reitsma 1989. COW TEAT HYSTERESIS AS AFFECTED BY TIME OF MEASUREMENT. Canadian Agricultural Engineering 31(2):153-157.
Volume: 31
Issue: 2
Pages -
Contributor:
Date: 1989
Technical field:
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Type: Text.Article
Format: PDF
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Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
DOI:
Description: The effect of time of measurement (before, during, and after milking) on hysteresis of the cow teat end is reported. Hysteresis measurement is based on external teat end diameter changes in response to step input changes of vacuum level (0 - 30 kPa and vice versa) to the outside of the teat. These measurements were made on all four teats of each of four cows. Measurable teat and expansion and contraction took place both before and during milking, but not after milking. Hysteresis ratio was significantiy (P< =0.05) higher during than before milking. This suggests teat end congestion as milking progresses. Also, increased (P<0.01) teat delay rise time during versus before milking suggests a delayed response of teats due to congestion. Adequate liner closure around the teat end will help reduce congestion and the incidence of mastitis.
Keywords:
Résumé:
Mots-clés:
Citation: R. Gupta and S.Y. Reitsma 1989. COW TEAT HYSTERESIS AS AFFECTED BY TIME OF MEASUREMENT. Canadian Agricultural Engineering 31(2):153-157.
Volume: 31
Issue: 2
Pages -
Contributor:
Date: 1989
Technical field:
Conference name:
Session name:
Other information:
Type: Text.Article
Format: PDF
Publication type:
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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