Home About Browse Search
Svenska


Milk removal

effect on milk yield, milk composition and milking efficiency in dairy cows

Ferneborg, Sabine (2016). Milk removal. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880
ISBN 978-91-576-8682-4
eISBN 978-91-576-8683-1
[Doctoral thesis]

[img]
Preview
PDF
487kB

Abstract

Milk from dairy cows is a staple dietary component for humans all over the world. Regardless of whether milk is consumed in its purest, unaltered form or as high-end products such as fine cheese or ice cream, it needs to be of high quality when taken from the cow, produced at a low price and produced in a system that consider aspects such as animal health, animal welfare and sustainability.

This thesis investigated the role of milk removal and the importance of residual milk on milk yield, milk composition and milking efficiency in dairy cows. The specific aspects examined were whether residual milk retained in the udder, specifically its fat component, is involved in regulation of milk synthesis and secretion and whether removal of this residual milk influences milk yield, composition and quality, measured as milk fatty acid composition and free fatty acid content.

The results showed that milking efficiency could be increased by increasing the pulsation ratio or using a higher cluster or teat cup take-off threshold, without negative effects on milk yield or milk composition. Milking time in automatic milking systems could thereby be decreased by one minute per cow and milking or more.

Milk fatty acid composition was affected by several treatments tested, but the content of free fatty acids and the size distribution of milk fat globules were unaffected. Residual milk yield increased both due to repeated residual milk removal and to use of a higher cluster take-off level. Residual milk removal also increased the relative proportion of short-chain fatty acids in milk. The overall conclusion of this thesis is that residual milk removal in mid-lactation dairy cows does not affect milk yield and that milking efficiency in an automatic milking system can be increased with higher takeoff levels without affecting milk yield or composition. No evidence of a regulatory mechanism in residual milk was found, but residual milk removal increased milk fat synthesis.

Authors/Creators:Ferneborg, Sabine
Title:Milk removal
Subtitle:effect on milk yield, milk composition and milking efficiency in dairy cows
Series/Journal:Acta Universitatis agriculturae Sueciae (1652-6880)
Year of publishing :2016
Number of Pages:65
Papers/manuscripts:
NumberReferences
IFerneborg, S., Kovac, L., Shingfield, K. & Agenäs, S. (2016). Effect of increased milking frequency and residual milk removal on milk production and milk fatty acid composition in lactating cows (manuscript).
IIFerneborg, S. & Svennersten-Sjaunja, K. (2015). The effect of pulsation ratios on teat condition, milk somatic cell count and productivity in dairy cows in automatic milking. Journal of Dairy Research 82(4), 453-459.
IIIFerneborg, S., Stadtmüller, L., Pickova, J., Wiking, L. & Svennersten- Sjaunja, K. (2015). Effects of automatic cluster removal and prestimulation routines on milking efficiency, milk yield and milk fat quality. Journal of Dairy Research 83(2), 180-187.
IVKrawzcel, P., Ferneborg, S., Wiking, L., Dalsgaard, T.K., Gregersen, S.B., Black, R., Larsen, T., Agenäs, S., Svennersten-Sjaunja,K. & Ternman, E. Milking time and risk of over-milking can be decreased with early teat cup removal based on udder quarter milk flow without loss in milk yield (manuscript).
Place of Publication:Uppsala
Publisher:Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-576-8682-4
ISBN for electronic version:978-91-576-8683-1
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:L Animal production > L01 Animal husbandry
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 402 Animal and Dairy Science > Animal and Dairy Science.
Agrovoc terms:dairy cows, milking, efficiency, milk composition, milk fat, free fatty acids, milk yield, milking equipment, udders, teat cups
Keywords:Milk removal, Milk yield, Milk composition, Milk fat, Free fatty acids, Dairy cow, Automatic milking, Milking management, Udder emptying, Milking frequency
URN:NBN:urn:nbn:se:slu:epsilon-e-3653
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3653
ID Code:13649
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Animal Nutrition and Management
Deposited By: Sabine Ferneborg
Deposited On:09 Sep 2016 13:48
Metadata Last Modified:12 Sep 2016 11:11

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits