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TheDairySite Newsletter - 01 March 2013

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Friday 1st March 2013.
Michael Priestley - Editor

Michael Priestley

Mastitis Challenges Examined at IMC

Global milk production faces huge changes if 2050 targets of 50 per cent output increases are to satisfy expanding populations.

Herds will become larger and management will grow in complexity. More 24 hour milking on ‘super dairies’ will mean an increasingly less skilled parlour workforce is relied on to extract milk.

Consequently, udder health programmes and bacterial control will become more challegning on larger holdings. 

This was the overriding theme for the International Mastitis Course held this week in Nottingham, UK.

Attended by practicing vets, members of academia and representatives of animal health organisations, the IMC gave leading experts in cattle health a platform to present studies and ideas aimed at guiding the veterinary and farming professions in improving milk quality.

Key speaker at the course was Ynte Schukken, Professor and Director, Quality Milk Production Services, Cornell University, US.

Professor Schukken opened the conference with presentations on mastitis epidemiology and immunity.

He revealed that case studies have shown the importance of the correct sick bay utilisation in managing bacterial transmission through the herd.

Persistently targeting specific bacteria is the key for successful treatment, he added.

Professor Shukken also examined infection and inflammation patterns, stressing that all pathogens are persistent whilst having important pathological differences.

He then discussed the efficacy of the Startvac vaccination programme. Extensive field trials have shown that new infections can be reduced by 57 per cent with a cure rate increase of 73 per cent.

Also of note was a one month decrease of infection duration following treatment.

Economic impacts of poor udder health were examined by Fran Welcome, Senior Extension Associate, also at the Quality Milk Production Service at Cornell.

Discarded milk counts for 66 per cent of mastitis losses. Mr Welcome referenced past research by Pamela Ruegg that showed the monetary losses experienced from high somatic cell counts are over twice that of medium counts.

Mr Welcome explored the risks of repeated cases and the costs associated with Streptococcus bacteria compared with Coliforms.

Studies conducted in the US found that first lactation animals were worst hit by S.aureus, E.Coli and Klebsiella spp pathogens whereas second lactation cows saw greater losses from Streptoccocus species, S.Aureus, E.Coli, Klebsiella spp and A pyogenes.

Also delivering papers at the IMC were the UK’s leading dairy health experts at Nottingham University.

Andrew Bradley, Clinical Reader in Dairy Production Medicine, delivered a talk on coliform mastitis in the context of case studies and Martin Green, Sub Dean of Research offered advice on farm level mastitis management and data analysis.

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This Weeks Articles and Analysis

Control of Liver Fluke and Rumen Fluke Infection in Sheep and Cattle in Northern Ireland
A summary of Liver Fluke is given by the Agri-Food and BioSciences Institute. The last few summers have provided good conditions for the parasite to grow and attention to the condition must be afforded to avoid losses.

Measuring Greener Pastures
A bird's eye view of what pastures are growing in southern Australia will provide insights into future research for the livestock industry.

Schmallenberg Virus Pathogenesis, Tropism and Interaction with the Innate Immune System of the Host
In an effort to reduce the effects of the schmallenberg virus, researchers have engineered the genome of the virus in a form that can be easily introduced and replicated in cultured cells.

Pastured Heifers Grow Well and Have Productive First Lactations
Pastured dairy heifers in long running field trials have performed as well and better than heifer housed indoors, according to research started in 1989 by the Centre for Integrated Agricultural System.

Determining Tasmanian Herd Size
Paul Lambert discusses labour, milking speed and walking distances as factors dictating expansion into large scale dairying in Tasmania in a report for Nuffield Australian Farming Scholars.

Market Reports

USDA Cattle on Feed - 22 February 2013
Estimates of Farm Incomes in Wales, 2012-13
Milk Prices and Composition of Milk – January 2012
USDA Agricultural Prices - 28 February 2013

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   United Kingdom

Dairymen to Drive Schmallenberg Monitoring
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Health and Management Benefits From Dairy Network Launch
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Mastitis Course Unveils Case Studies
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ICSA President Backs CAP Amendments
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Trade Negotiations Enter Advanced Stages


Towards Integrated Animal Health: Food Safety Surveillance in East Africa


Plant By-products Transformed Into Animal Feed

   European Union

NFU Conference: Demand Fair and Simple CAP Reforms
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MOA Leads Crackdown on Counterfeit Agricultural Inputs

   New Zealand

Strong Currency Scant Consolation in Face of Drought


Bats Tackled Following Rabies Outbreak


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