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Estimating the impact of somatic cell count on the value of milk utilising parameters obtained from the published literature

Published online by Cambridge University Press:  26 March 2014

Una Geary ,
Nicolas Lopez-Villalobos ,
Bernadette O'Brien ,
Dorian J Garrick  and
Laurence Shalloo
Una Geary*
Affiliation:
Livestock Systems Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland
Nicolas Lopez-Villalobos
Affiliation:
Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand
Bernadette O'Brien
Affiliation:
Livestock Systems Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland
Dorian J Garrick
Affiliation:
Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand
Laurence Shalloo
Affiliation:
Livestock Systems Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland
*
*For correspondence; e-mail: [email protected]
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Abstract

The impact of mastitis on milk value per litre independent of the effect of mastitis on milk volume, was quantified for Ireland using a meta-analysis and a processing sector model. Changes in raw milk composition, cheese processing and composition associated with increased bulk milk somatic cell count (BMSCC) were incorporated into the model. Processing costs and market values were representative of current industry values. It was assumed that as BMSCC increased (i) milk fat and milk protein increased and milk lactose decreased, (ii) fat and protein recoveries decreased, (iii) cheese protein decreased and cheese moisture increased. Five BMSCC categories were examined from ⩽100 000 to >400 000 cells/ml. The analysis showed that as BMSCC increased the production quantities reduced. An increase in BMSCC from 100 000 to >400 000 cells/ml saw a reduction in net revenue of 3·2% per annum (€51·3 million) which corresponded to a reduction in the value of raw milk of €0·0096 cents/l.

Keywords

mastitissomatic cell countprocessorcheesemilk
Type
Research Article
Information
Journal of Dairy Research , Volume 81 , Issue 2 , May 2014 , pp. 223 - 232
Copyright
Copyright © Proprietors of Journal of Dairy Research 2014 

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