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dc.contributor.authorO'Callaghan, Edmond J*
dc.contributor.authorGleeson, David E*
dc.date.accessioned2014-03-10T17:22:13Z
dc.date.available2014-03-10T17:22:13Z
dc.date.issued2004
dc.identifier.citationE.J. O’Callaghan, D.E. Gleeson. A note on the effects of test-end vacuum on milking characteristics. Irish Journal of Agricultural and Food Research 43: 265–269, 2004.en_GB
dc.identifier.issn0791-6833
dc.identifier.urihttp://hdl.handle.net/11019/554
dc.descriptionpeer-revieweden_GB
dc.description.abstractThe magnitude of vacuum applied to the teat end can have a major effect on milking characteristics. While milking vacuum is usually measured in the milk pipeline, the teat-end vacuum during milk flow depends on the configuration of the milking unit. The objective was to establish the effect of teat-end vacuum, recorded during flow simulation, on actual milking time, milk yield, and both mean and peak milk-flow rates. Four configurations of milking units were set up to give vacuum levels of 35, 38, 40 and 42 kPa at the apex of an artificial teat during simulated milking. The experiment involved a latin square design with four groups of Friesian cows (14/group), four 2-day periods and four treatments (vacuum level). Altering the vacuum level had no significant effect on milk yield. There were no differences in milking characteristics between vacuum levels of 38 and 40 kPa. A vacuum level of 42 kPa gave a shorter milking time (P < 0.001), higher average milk-flow rate (P < 0.01) and higher peak milk-flow rate (P < 0.001) than the three lower vacuum levels. Milking time was significantly longer (P < 0.001) and peak milk-flow rate lower (P < 0.001) with a vacuum of 35 kPa compared to other vacuum levels.en_GB
dc.language.isoenen_GB
dc.publisherTeagasc (Agriculture and Food Development Authority), Irelanden_GB
dc.relation.ispartofseriesIrish Journal of Agricultural and Food Research;43
dc.subjectMilking machinesen_GB
dc.subjectMilking timeen_GB
dc.subjectVacuumen_GB
dc.titleA note on the effects of test-end vacuum on milking characteristicsen_GB
dc.typeArticleen_GB
dc.identifier.rmisMKDC-0104-5063
dc.contributor.sponsorEuropean Union
refterms.dateFOA2018-01-12T07:58:21Z


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This item appears in the following Collection(s)

  • Livestock Systems [208]
    Teagasc LIvestock Systems Department includes Dairy, Cattle and Sheep research.
  • Livestock Systems [208]
    Teagasc LIvestock Systems Department includes Dairy, Cattle and Sheep research.
  • IJAFR, volume 43, 2004 [19]
    Irish Journal of Agricultural and Food Research, Volume 43, 2004
  • IJAFR, volume 43, 2004 [19]
    Irish Journal of Agricultural and Food Research, Volume 43, 2004

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