Adaptation of the mammary oxygen consumption in
response to milking frequency variations
in dairy cows

The aim of this experiment was to examine the adaptation of mammary energy expenditure in response to variations in milk yield induced by modifications of milking frequency. Three lactating cows were milked at 8-, 12-, 16- or 24-h intervals according to a Youden square with 5 periods of 7 days. When milking interval increased, milk yield decreased significantly by 24%, mammary blood flow significantly by 16% and oxygen consumption not significantly by 18%. As a result, the non significant decrease in the mammary oxygen consumption is associated with no reduction of the oxygen extraction but a decrease blood supply to the udder.

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ISSN:

1230-1388

Assigning DOI numbers, introducing articles from supplements and recent publications to POL-index database, maintaining anti-plagiarism detection, electronic system to proceed manuscripts and webpage of the Journal with interactive pdf files, and language correction of manuscripts published in Journal of Animal and Feed Sciences are financed in the years 2018–2019 by the Ministry of Science and Higher Education from the funds for science popularization activities, Agreement No. 631/P-DUN/2018.