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RESEARCH ARTICLE
Contents Vol 46(7)

Influence of milking frequency on the productivity of dairy cows

C. R. Stockdale
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Primary Industries Research Victoria (PIRVic), Department of Primary Industries, Kyabram Centre, 120 Cooma Road, Kyabram, Vic. 3620, Australia. Email: richard.stockdale@dpi.vic.gov.au

Australian Journal of Experimental Agriculture 46(7) 965-974 https://doi.org/10.1071/EA05308
Submitted: 14 November 2005  Accepted: 7 April 2006   Published: 8 June 2006

Abstract

Benefits and issues of changing milking frequency from the traditional twice a day are reviewed. Increased efficiency through dairy automation and mechanisation, and the desire to utilise advances in genetic selection, have made milking more frequently than twice a day an attractive option for some farmers. The size of the response to increased milking frequency appeared not to be related to existing milk yield, with the average response to increasing the frequency from 2 to 3 times a day being 3.5–3.8 kg/day. Labour is the single most important cost associated with the decision to increase milking frequency. For this reason, automated milking systems may hold the key to the long-term profitability of challenging cows to produce to their genetic potential. In contrast, reducing milking frequency to once a day has been used to reduce stress on underfed cows or for lifestyle and/or labour considerations. Short-term experiments indicate an average production loss of 21% for once daily relative to twice daily milking. Full lactation experiments suggest greater losses of 35–50%, but there is evidence that cows can adapt to longer milking intervals and this, coupled with increased stocking rate and care to maximise milk removal, may restrict yield losses to less than 10% on a whole-farm basis.

Additional keywords: benefits of milking frequency, costs of milking frequency, milk composition, milk production, robotic milking systems.


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