Impact of milking frequencies on the level of free fatty acids in milk, fat globule size, and fatty acid composition

Journal of Dairy Science
L WikingK Svennersten-Sjaunja

Abstract

The aim of the present study was to study the effect of milking cows 4 times daily on free fatty acids (FFA) in the milk compared with milking twice daily. An experiment was performed during 2 wk in which half udders in 11 cows were milked 2 or 4 times daily. Milk yield was measured, and milk was analyzed for fat content, FFA, fatty acid composition, fat globule size, and activity of gamma-glutamyl transpeptidase. Concentration of FFA was greater (1.49 mEq/100 g of fat) in milk from half udders milked 4 times daily than in milk from the half udders milked twice daily (1.14 mEq/100 g of fat). Further, it was noted that milk from the half udder milked 4 times daily contained milk fat globules with larger average diameters. Increased milking frequency increased milk yield by 9% compared with the udder half milked twice daily, but fat content and fat yield were not affected. The results are of importance for further understanding the mechanisms behind the increased content of FFA that is frequently observed in automatic milking systems.

References

Aug 1, 1990·The Journal of Dairy Research·J E HillertonC J Wilde
Mar 1, 1997·Journal of Dairy Science·L R KleiD K Bandler
May 20, 2000·Journal of Mammary Gland Biology and Neoplasia·I H Mather, T W Keenan
Sep 26, 2000·Journal of Dairy Science·G H KlungelH Hogeveen
Sep 10, 2004·The Journal of Dairy Research·Moez AyadiElena Albanell

❮ Previous
Next ❯

Citations

Nov 15, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Ronan LordanIoannis Zabetakis
Aug 25, 2009·Journal of Dairy Science·M GlantzM Paulsson
Oct 1, 2009·Animal : an International Journal of Animal Bioscience·B RémondJ Guinard-Flament
May 1, 2019·The Journal of Dairy Research·Lars WikingT Kristensen
Nov 14, 2007·Journal of Animal Science·K M Svennersten-Sjaunja, G Pettersson
Sep 23, 2008·Journal of Food Science·D Bermúdez-AguirreG V Barbosa-Cánovas
Feb 24, 2019·Progress in Lipid Research·Wei WeiXingguo Wang

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.