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The effect of dairy cow breed and cross on milk production and fatty acid composition under grazing conditions

Published online by Cambridge University Press:  22 November 2017

R A Palladino ,
F Buckley ,
J J Murphy ,
R Prendiville ,
J Callan  and
D Kenny
R A Palladino*
Affiliation:
School of Agriculture, Food Science and Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
F Buckley
Affiliation:
Teagasc, Moorepark Dairy Production Research Centre, Fermoy, Co. Cork, Ireland
J J Murphy
Affiliation:
Teagasc, Moorepark Dairy Production Research Centre, Fermoy, Co. Cork, Ireland
R Prendiville
Affiliation:
School of Agriculture, Food Science and Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland Teagasc, Moorepark Dairy Production Research Centre, Fermoy, Co. Cork, Ireland
J Callan
Affiliation:
School of Agriculture, Food Science and Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
D Kenny
Affiliation:
School of Agriculture, Food Science and Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
*
Email: [email protected]
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Extract

Dietary intake of omega-3 polyunsaturated fatty acids (n-3 PUFA) and conjugated linoleic acid (CLA) has been recognized as having potential positive effects on human health (Lock and Bauman, 2004). Furthermore, alteration of the fatty acid (FA) composition of milk through targeted manipulation of dairy cow diets can be achieved (Dewhurst et al., 2006). Although breed effects on the FA composition of milk have previously been reported (Kelsey et al., 2003), most work to-date has been conducted under high input TMR based systems. Furthermore, little is known on the effects of heterosis on concentrations of FA in milk. The objective of this study was to examine whether differences in milk FA concentration exist between two contrasting breeds of dairy cow and their F1 hybrid managed under a grazing based production system.

Type
Theatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2009 , April 2009 , pp. 81
Copyright
Copyright © The British Society of Animal Science 2009

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References

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