Effects of season and time of milking on spontaneous and induced lipolysis in bovine milk fat

Renáta Toušová, Luděk Stádník and Jaromír Ducháček
Additional contact information
Renáta Toušová: Department of Animal Husbandry, Faculty of Agrobiology, Food and Natural Sources, Czech University of Life Sciences Prague, Prague-Suchdol, Czech Republic
Luděk Stádník: Department of Animal Husbandry, Faculty of Agrobiology, Food and Natural Sources, Czech University of Life Sciences Prague, Prague-Suchdol, Czech Republic
Jaromír Ducháček: Department of Animal Husbandry, Faculty of Agrobiology, Food and Natural Sources, Czech University of Life Sciences Prague, Prague-Suchdol, Czech Republic

Czech Journal of Food Sciences, 2013, vol. 31, issue 1, 20-26

Abstract: The effects were evaluated of different factors on the level of spontaneous (SPO) and induced (IND) lipolysis as defined by the content of free fatty acids (FFA) in milk. Milk samples were collected at monthly intervals throughout the year from both morning and evening milkings either individually in a milking parlour (SPO; n = 10) or from the bulk tank (IND; n = 10). The data were analysed using SAS 9.1. More intensive SPO was observed from March to May with higher FFA contents (+0.034 to +0.523 mmol/100 g of fat; P < 0.05-0.01), and also from September to November (+0.077 to +0.292 mmol/100 g of fat; P < 0.05). More intensive SPO was also detected in the evening milk than in that coming from morning milking (+0.062 to +0.556 mmol/100 g of fat; P < 0.05-0.01). SPO measured immediately after milking was affected by the season and time of milking. The content of FFA characterising IND in bulk milk (0.33-1.10 mmol/100 g of fat) was higher (P < 0.05-0.001) than that due to SPO in individual samples (0.21-0.86 mmol/100 g of fat), especially in those from evening milking compared to morning milking (+0.10 to +0.47 vs. +0.12 to +0.22 mmol/100 g of fat; P < 0.05-0.001).

Keywords: dairy cow; free fatty acid; lipolysis; milking; processing (search for similar items in EconPapers)
Date: 2013
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://cjfs.agriculturejournals.cz/doi/10.17221/9/2012-CJFS.html (text/html)
http://cjfs.agriculturejournals.cz/doi/10.17221/9/2012-CJFS.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjf:v:31:y:2013:i:1:id:9-2012-cjfs

DOI: 10.17221/9/2012-CJFS

Access Statistics for this article

Czech Journal of Food Sciences is currently edited by Ing. Zdeňka Náglová Ph.D.

More articles in Czech Journal of Food Sciences from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().