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

  • Una Geary (a1), Nicolas Lopez-Villalobos (a2), Bernadette O'Brien (a1), Dorian J Garrick (a2) and Laurence Shalloo (a1)...

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.

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Auldist, MJ 2000 Effects of mastitis on raw milk and dairy products. In proceedings of: Pacific Congress on milk quality and mastitis control. November 13–16, Nagano, Japan, pp. 191204
Auldist, MJ, Coats, ST, Sutherland, BJ, Clarke, PT, McDowell, GH & Rogers, GL 1996 Effect of somatic cell count and stage of lactation on the quality of full cream milk powder. Australian Journal of Dairy Technology 51 9498
Barbano, D & Lynch, J 1999 Fact sheet-Milk protein testing-FAQ's. Changing from crude protein to true protein. (accessed 20/08/2012)
Barbano, DM, Rasmussen, RR & Lynch, JM 1991 Influence of milk somatic cell count and milk age on cheese yield 1. Journal of Dairy Science 74 369388
Berry, DP, O'Brien, B, O'Callaghan, EJ, Sullivan, KO & Meaney, WJ 2006 Temporal trends in bulk tank somatic cell count and total bacterial count in Irish dairy herds during the past decade. Journal of Dairy Science 89 40834093
Cazoto, LL, Martins, D, Ribeiro, MG, Durán, N & Nakazato, G 2011 Antibacterial activity of violacein against Staphylococcus aureus isolated from Bovine Mastitis. The Journal of Antibiotics, 64 395397
Central Statistics Office Ireland 2011 Intake of Cows Milk by Creameries and Pasteurisers by Month, Domestic or Import Source and Statistic. Cork, Ireland: Central Statistics Office.,%20Domestic%20or%20Import%20Source%20and%20Statistic&path=/px/pxeirestat/Database/Eirestat/Agriculture%20Milk%20Production/&lang=1 (verified 27 March 2013)
CLAL 2011 website accessed 27/03/2013.
Crombie, I & Davies, HT 2009 What is meta-analysis? In: What is…? Series, Second Edition, Evidence Based Medicine. NPR09/1112.
Denis, M, Wedlock, DN, Lacy-Hulbert, SJ, Hillerton, JE & Buddle, BM 2009 Vaccines against bovine mastitis in the New Zealand context: What is the best way forward? New Zealand Veterinary Journal 57 132140
Doggweiler, R & Hess, E 1983 Zellgehalt in der Mich ungeschädigter Euter. Milchwissenschaft 38 167188
FAOSTAT 2010 Agriculture statistics 2000–2009.
Geary, U, Lopez-Villalobos, N, Garrick, DJ & Shalloo, L 2010 Development and application of a processing model for the Irish dairy industry. Journal of Dairy Science 93 50915100
Geary, U, Lopez-Villalobos, N, Begley, N, McCoy, F, O'Brien, B, O'Grady, L & Shalloo, L 2012a Estimating the effect of mastitis on the profitability of Irish dairy farms. Journal of Dairy Science 95 36623673
Geary, U, Lopez-Villalobos, N, Garrick, DJ & Shalloo, L 2012b An analysis of the implications of a change to the seasonal milk supply profile in the Irish dairy industry utilising a seasonal processing sector model. Journal of Agricultural Science 150 389407
Guinee, T, Mulholland, EO, Kelly, J & O'Callaghan, DJ 2007 Effect of protein-to-fat ratio of milk on the composition, manufacturing efficiency, and yield of Cheddar cheese. Journal of Dairy Science 90 110123
Hickey, DK, Kilcawley, KN, Beresford, TP, Sheehan, EM & Wilkinson, MG 2006 The influence of a seasonal milk supply on the biochemical and sensory properties of Cheddar cheese. International Dairy Journal 16 679690
Hogeveen, H, Huijps, K, Halasa, T & Lam, TJGM 2010 Mastitis costs money: Whats new. In proceedings: Mastitis research into practice: Proceedings of the 5th IDF mastitis conference
Huijps, K, Lam, TJGM & Hogeveen, H 2008 Costs of mastitis: facts and perception. Journal of Dairy Research 75 113120
Huijps, K, Hogeveen, H, Antonides, G, Valeeva, N, Lam, TJGM & Oude Lansink, AGJM 2010 Sub-optimal economic behaviour with respect to mastitis management. European Review of Agricultural Economics 37 553568
International Dairy Federation 1997 Recommendations for Presentation of Mastitis-Related Data. Bulletin No 321/1997. Brussels, Belgium: International Dairy Federation
Kromker, V, Grabowski, NT, Redetzky, R & Hamann, J 2001 Detection of mastitis using selected quarter milk parameters. 2nd Intl. Symp. Bovine Mastitis and Milk Quality. Vancouver, Canada, pp. 486487
Ma, Y, Ryan, C, Barbano, DM, Galton, DM, Rudan, MA & Boor, KJ 2000 Effects of somatic cell count on quality and shelf-life of pasteurized fluid milk. Journal of Dairy Science 83 264274
Malcolm, D, Hook, I, Montgomerie, B, Winkleman, A, Sim, S & Brennan, G 2005 The cost of mastitis. Dairy Insight Research 2005/2006 Final Report. National Mastitis Advisory Committee, Hamilton, New Zealand
National Farm Survey Results 2011 Teagasc, Dairy Enterprise. (accessed 15/01/2013)
Nightingale, C, Dhuyvetter, K & Schukken, Y 2008 Influence of variable milk quality premiums on observed milk quality. Journal of Dairy Science 91 12361244
Politis, I & Ng-Kwai-Hang, KF 1988 Association between somatic cell count of milk and cheese-yielding capacity. Journal of Dairy Science 71 17201727
Quinlan, C, Keane, M, O'Connor, D & Shalloo, L 2010 The transport implications for Ireland of the elimination of 1008 the milk quota regime in 2015. In Proceedings of the Irish 1009 Transport Research Network Conference 2010, 31 1010 August–1 September 2010, University College Dublin, 1011 Ireland (Eds Gosh, B & Murray, R), Part 9, Paper 1. Dublin: 1012 ITRN. 1013 209.pdf (verified 5 June 2013)
Rogers, SA & Mitchell, GE 1989 The relationship between somatic cell count composition and manufacturing properties of bulk milk 5. Pasteurised milk and skim milk powder. Australian Journal of Dairy Technology 44 5760
Santos, MV, Ma, Y & Barbano, DM 2003 Effect of somatic cell count on proteolysis and lipolysis in pasteurized fluid milk during shelf-life storage. Journal of Dairy Science 86 24912503
SAS 2010 SAS/STAT Version 9.3 SAS Institute Inc., Cary, NC
Shalloo, L, Dillon, P, Rath, M & Wallace, M 2004 Description and validation of the Moorepark Dairy System Model. Journal of Dairy Science 87 9451959
St-Pierre, NR 2001 Invited review: integrating quantitative findings from multiple studies using mixed model methodology. Journal of Dairy Science 84 741755
Van Slyke, L & Price, W 1949 Cheese. New York, NY: Orange Judd Publ. Co. Inc.
Valeeva, NI, Lam, TJGM & Hogeveen, H 2007 Motivation of dairy farmers to improve mastitis management. Journal of Dairy Science 90 44664477
Wiggans, GR & Shook, GE 1987 A lactation measure of somatic cell count. Journal of Dairy Science 70 266267
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Journal of Dairy Research
  • ISSN: 0022-0299
  • EISSN: 1469-7629
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