A review of once-a-day milking in dairy cow grazing systems

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dc.citation.issue4
dc.citation.volume4
dc.contributor.authorLopez-Villalobos N
dc.contributor.authorJayawardana JMDR
dc.contributor.authorMcNaughton LR
dc.contributor.authorHickson RE
dc.coverage.spatialUnited States
dc.date.accessioned2024-12-13T00:57:19Z
dc.date.available2024-12-13T00:57:19Z
dc.date.issued2023-07-13
dc.description.abstractTwice-a-day (TAD) milking during the whole lactation is practiced in about 55% of New Zealand herds and once-a-day (OAD) milking during the whole lactation in about 10% of herds. The remainder of farmers use a mixture of TAD and OAD. Results from long-term comparisons show that over a full-lactation cows milked OAD, on average, had lower yields of milk (27%), fat (23%), and protein (24%) and higher percentages of fat and protein than cows milked TAD, but cows milked OAD for the entire lactation had better reproductive performance. Herds of cows milked OAD have higher mean 3-wk submission rate, 6-wk in-calf rate, and conception to the first service, and lower not-in-calf rate than the herds of cows milked TAD for the entire lactation. Farmers that have adopted OAD milking have culled cows that are unsuitable for OAD, and used sires selected on a OAD selection index to produce cow replacements that are more suitable for OAD milking. This OAD index includes the same traits that are included in the New Zealand national selection index with different relative economic weights on these traits plus including udder support, front teat placement, milking speed, and body capacity. A pasture-based milk production system based on OAD can be an alternative for many dairy farmers to maintain or increase farm profitability, with the additional benefits of better cow fertility and flexibility of using labor.
dc.description.confidentialfalse
dc.edition.editionJuly 2023
dc.format.pagination329-333
dc.identifier.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/37521058
dc.identifier.citationLopez-Villalobos N, Jayawardana JMDR, McNaughton LR, Hickson RE. (2023). A review of once-a-day milking in dairy cow grazing systems.. JDS Commun. 4. 4. (pp. 329-333).
dc.identifier.doi10.3168/jdsc.2022-0293
dc.identifier.eissn2666-9102
dc.identifier.elements-typejournal-article
dc.identifier.issn2666-9102
dc.identifier.piiS2666-9102(23)00014-5
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/72304
dc.languageeng
dc.publisherElsevier Inc. and Fass Inc. on behalf of the American Dairy Science Association
dc.publisher.urihttps://www.sciencedirect.com/science/article/pii/S2666910223000145
dc.relation.isPartOfJDS Commun
dc.rights(c) 2023 The Author/s
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleA review of once-a-day milking in dairy cow grazing systems
dc.typeJournal article
pubs.elements-id479722
pubs.organisational-groupOther
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