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TheDairySite Newsletter - 4 July 2014

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TheDairySite
Friday 4th July 2014.
Michael Priestley - Editor

Michael Priestley
Editor


Johne’s Disease: Controlling the 4000 Kilo Condition

Cows with Johne’s disease give an average of 4,000 kilograms less milk over their lifetime, US data shows.

The majority of the loss comes from early culling and is a ‘conservative estimate’ in the eyes of some industry experts, National Milk Records Veterinarian Karen Bond told the Livestock Event yesterday.

She explained that the far reaching health effects of the condition make it so costly to yield.

Mrs Bond said: “Research shows that a cow with Johne’s is 1.5 times more likely to become lame, has double the chance of getting mastitis and is 1.8 times more likely to suffer digestive or respiratory disease.”

She added: “Johne’s has a big impact on lameness, mastitis and fertility – these represent the cull list on farms.”

Whether Johne’s disease cases are rising is difficult to say, according to Dr Alistair Macrae of the Dairy Heard Health and Productivity Service.

His message was that improved tests may mean farmers are more aware of instances of Johne's and urged regular testing, be it of blood, muck or milk to get to grips with disease presence on farm.

Once identified, Johne’s infected cows can be segregated, calved separately and kept away from any milk or any colostrum pooling that may occur.

But Dr Macrae told TheDairySite that, regardless of farming system and calving strategy, Johne’s can be a problem.

“Farms that appear badly managed but have closed herds can escape because they have no route to bring the bacteria on farm,” he said.

“Contrastingly, well managed farms buying cows can be unknowingly be bringing in Johne’s problems.”

This is because of a ‘triangle of factors’ which firstly requires a bacterial presence and then farm management and farm environment to allow the disease to spread, he explained.

Passing from infected dams into calves via muck, Johne’s route to the calf is through contaminated colostrum and milk.

This requires close attention of calves in the six months of life, said Dr Macrae.

The ‘biggest problem’ facing farmers is that an infected calf may not show clinical signs until the calf is three to five years old.

This means common dairy practices are a major risk factor for spreading bacteria to calves.

“Pooling colostrum is a recognised risk factor for Johne’s, as is not segregating infected cows at calving,” said Dr Macrae.

“Multiple cross suckling, feeding waste milk from cows and having group calving pens also represent a risk of transmission if a Dam is infected and not identified.”


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This Week's Articles and Analysis

Cows Have Flooring Preferences at Calving
Rubber mats may not be the best flooring for maternity pens, according to a study published in the Journal of Dairy Science.

What Impact Do Fatty Acids Have on Reproductive Performance?
The addition of fatty acids to dairy diets has piqued the interest of dairy producers and nutritionists in recent years, Dr Ronaldo Cerri, University of British Columbia, Faculty of Land and Food Systems.

Can Genetics and Other Factors Limit Methane Output From Cows?
Methane emissions from cows are decreasing, but not at the pace which the agricultural sector and the government agreed, say staff at Wageningen University.

Proactive Mastitis Management For Cow Longevity
Controlling mastitis has many basic elements, some of which have not changed for decades. However, antibiotic resistance is one rapidly shifting factor that needs addressing.

Company News

Novus 2014 Food Drive Offers Local Children Freedom from Summer Hunger
US - Novus International has last week honoured the generosity of itsr employees by matching donations to the St. Louis Area Foodbank. The company’s matching funds bring the 2014 Food and Funds Drive total to $15,000.
Market Reports

USDA Dairy Products - 3 July 2014
USDA National Dairy Products Sales Report - 2 July 2014
USDA Grain Stocks - 30 June 2014
USDA Acreage - 30 June 2014
USDA Agricultural Prices - 27 June 2014

Global Dairy Industry News

   United Kingdom

Keep Silage Intake High to Avoid Yield Losses
Do Strong Land Prices Help or Hinder Farming?
Minister Welcomes Increased Exports at Opening of Livestock Event
Take More Care With Calf Health
Antibiotic Review Must Consider Animal Health, Say UK Vets
NFU Joins Discussion on Edge Area Vaccination
Great Opportunities Signal Bright Future for UK Dairy
UK Dairy Industry Launches ‘Leading the Way’
Two Million Hectare Shortfall in UK Land Possible by 2030

   India

Retail Chain Allowed to Source Produces from Farmers Directly

   United States

Let’s Keep COOL this Independence Day, Says Farmers Union
FDA Reports Full Industry Engagement over Judicious Antibiotic Use
Part II: Three Truths about Public’s Perception of Genetic Modification
Wyckoff's Closing Report: Live Cattle Closed Lower
USDA Reports Hammer Grains Lower; More Soy Than Expected

   Global

Cattle Parasites Among FAO's Top Ten List of Human Concerns
Jim Wyckoff's Morning Report: Extraordinary Day For Trading
Exports to Dominate Expanding Global Dairy Market
Global Dairy Price Recovery Six Months Away
Hoof Trimming: Not About Perfection
Algorithms For Cattle Conditions Unlikely, Conference Hears

   European Union

Walhorn Arla Merger Approved

   Tunisia

Tunisia Reports 26 Outbreaks of Foot and Mouth Disease

   China

How Improving Welfare Can Improve Profits

   Botswana

FMD Reported in Vaccinated Cattle in Northern Botswana

   Netherlands

Milk is Part of a Green Diet
Tension Reported in Dutch Milk Market

Events/Promotions

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The Drost Project - A Visual Guide to Porcine, Pig Reproduction.
Sales Representative - Agricultural Industry
VIV Europe Digital 2014
Livestock Event 2014 - 2nd & 3rd July The NEC, Birmingham, UK
VIV China 2014

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