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TheBeefSite Newsletter - 2 May 2012

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Welcome to this week's newsletter

Delivering Genomic Technology to the Beef Industry

Improving the genetics of livestock is a continual aim for producers. Genomics (DNA testing) is one of the latest technologies available, yet despite considerable research and progress in mapping the bovine genome, genomics is not a widely used tool in the cattle industry.

A White Paper “Delivering Genomics Technology to the Beef Industry", published by the National Beef Cattle Evaluation Consortium (NBCEC), looks at how genomic selection can be successfully utilised in selection programmes, identifies challenges association with genomics and outlines promising potentials for its future use.

Current use of genomics

Currently genomics is used in the beef industry to determine parentage as well as to identify which animals carry qualitative and quantitative traits.

Parentage

Identifying the parentage of cattle is a critical factor in assessing estimated progeny differences (EPDs).

The report states that using genomics for parentage allows seedstock producers to manage multiple sire breeding pastures and settle artificial insemination (AI)/ natural sire discrepancies when birth dates are inconclusive.

Genomics parentage testing enables an increase in the amount of information used to estimate an animal’s genetic merit, thereby improving the accuracy of prediction of the estimate although not necessarily affecting the predicted value.

Qualitative traits

Qualitative traits are those such as coat colour, horned/ polled, which are controlled by a single pair of genes that have a simple recessive inheritance.

Genomics can be used to identify cattle that are carriers of recessive genes facilitating selection against the carriers, if desired; or make more informed mating decisions. The greatest value of these tests is to identify and manage lethal recessives; this technology has saved the beef industry countless dollars, says the report.

Quantitative traits

The third use is to select cattle for more commercial traits, which are controlled by multiple pairs of genes and influenced by the environment, such as birth weight, carcase fat etc.

There are a number of ways to combine genomic and phenotypic information into a single selection tool. Breeding values based on genomics information for a variety of traits are now available from multiple commercial companies and can be used as selection tools.

However, there is no evidence to suggest that these tools provide a better selection tool than EPDs and the likely best use of this information, says the report, is to combine it with phenotypic information in a genetic evaluation to compute genomically enhanced EPDs.

The American Angus Association was the first breed organisation to augment their EPD with genomic information, however several other breeds have shown interest in taking advantage of this technology since then.

Challenges

An early and ongoing challenge to adoption of genomics is getting producers to understand what genomics is about, however demonstrating financial benefits is also a challenge.

Outside of seedstock production, demonstrating an economic driver to the industry has proven difficult, despite the benefits of genomics being seen further up.

Today, the costs of genomics testing tend to exceed the value that is returned to any single sector.

The current marketing structure is for seedstock producers to collect DNA for pedigree verification, genetic defect testing and possibly genomic enhanced EPDs and should pass that cost on through higher bull prices. Obtaining further genomics information results in re-collection and extraction of genomics information at additional costs to the new owner.

The report suggests that a better economic model could be developed so that cattle would be genotyped once early in life and genotypes shared among production sectors to derive the maximum value from the DNA collection and extraction costs incurred.

A promising future?

Cattle health

Incorporating disease resistance into a breeding programme would have significant benefits for the industry. One use would be to eliminate bovine respiratory disease (BRD) - an important cause of disease-related economic losses.

The White Paper says that there is evidence that BRD susceptibility has a genetic component, with low heritability. A five year study is underway to try and understand the genetic potential of animals to remain healthy and free of BRD, which will help identify and select cattle that are less susceptible to the disease.

Production

EPDs are a reliable tool to assist producers when selecting for production traits. However, genomics offers opportunities to improve the accuracy in these traits. On a within breed basis the development of genomic enhanced EPDs has been successful, says the report.

Having the data of genotyped animals available for a genomic test is not a possibility for all breeds and so the report suggests a robust across-breed set of genomic prediction equations.

Another benefit to the industry would be to focus more on input traits, such as feed intake and efficiency, especially when considering feed costs are between 60-65 per cent of production costs.

Reproduction

Given the economic importance of reproduction, it is crucial for commercial cow-calf producers to optimise reproductive performance in their herds.

Because of the low heritability of most reproductive traits and limited access to reproduction EPDs (heifer pregnancy rate and stayability in a limited number of breeds), the commercial beef sector has attempted to maintain high reproduction rates through crossbreeding and improved management practices with very little emphasis on selection.

The report states that genomic testing offers an attractive approach to provide these previously-absent selection criteria.

Beef consumption and health

The health impact of beef consumption is a topic of great debate. Studies have shown that altering the mineral and/ or fatty acid composition of beef does not have an effect on palatability.

Other studies have shown that genetic factors influence fatty acid composition. This report suggests that if genetic markers that impact fatty acid and mineral composition can be identified then selection for improved beef healthfulness can be achieved.

The full report can be found here.

Charlotte Johnston



* This Week's Feature Articles

We have 4 new features this week:

Australian Beef Demand in Japan
Meat and Livestock Regional Manager for Japan, Melanie Brock, talks about the state of the Japanese market a little more than 12 months after the earthquake, tsunami and nuclear disaster struck.
Review of the Polish Beef Sector
After Ireland, Poland is the second largest net exporter of beef in the EU-27. The Polish beef industry was transformed after their accession to the EU in 2004. Up until this point, around 60 per cent of exports were in live form, writes Peter Duggan from Bord-Bia, the Irish Food Board.
High Sperm Numbers - Detrimental Effects on Bull Sperm During Liquid Storage
Research from the University of Limerick looks at whether high sperm numbers have a detrimental effect on bull sperm during liquid storage.
Counteracting Trichothecenes in Animal Feed
In feeds and feed ingredients, poorly adsorbable mycotoxins like trichothecenes need to be counteracted by biotransformation, says Karin Naehrer of Biomin.
Cow Signals Training Books
* Market Reports

 » AHDB European Market Survey - 27 April 2012
 » AHDB UK Market Survey - 27th April 2012

* Company News

Survey Reveals Global Prevalence of Mycotoxins
GLOBAL - Biomin has published the results of its Mycotoxin Survey Program for 2011. The comprehensive survey documents the occurrence of mycotoxins in samples taken throughout 2011 in different regions. One thing is clear: the global prevalence of mycotoxins in a range of common feed commodities underscores the need for quality feed management strategies.
* Global Beef Cattle Industry News

   Canada

 » Canada's Food System Sustainability Challenged
 » Protecting Livestock from Schmallenberg Virus
 » Expanding Cattle Trade with Morocco, Middle East

   United Kingdom

 » UK Red Meat Production Down in Q1 of 2012
 » Union Leaders Concerned at Possible Payment Cuts
 » Beef Sector has a Bright Future
 » Milk the Potential Profit from Dairy-Bred Beef
 » CAP Reform Report Published
 » Obesity is a Long–Term Problem
 » International Conference Focuses on ‘Greening’ CAP
 » Confidence Growing Among Beef Farmers
 » CAP Reform Must Work for Tenanted Sector
 » Keeping Welfare Standards in a Food Hungry World
 » Farming Needs Must be Represented in EU Reforms
 » Record Farm Output Levels Spur Solid Performance

Genus - Value through science and genomics
   United States

 » Ghana Suspends Anthrax Vaccinations
 » Weekly Roberts Market Report
 » New NCBA Producer Education Programme Director
 » CME: BSE Follow-Up
 » Cephalosporins Banned in Semen Extenders
 » USDA Assures Customers over BSE Case
 » Senate Ag Committee Approves Farm Bill
 » Does the Farm Bill Give Farmers What they Want?
 » CME: Corn Futures Higher as China Purchases Corn
 » Beef Futures Markets Bounce Back After BSE Reports
 » Administration Pulls On-Farm Youth Labor Rule
 » Cattle Outlook: Cattle Futures Regained Loss
 » Is the Cattle Market too Cautious?
 » CME: Crop Plantings, Restaurant Performanance Up

   Paraguay

 » Paraguayan Beef Exports Decline in March

   Ireland

 » Access for Irish Beef to Libya Expected Shortly
 » Reducing GHG Emissions in Agriculture

   Global

 » Trade Dispute on Hormones in Beef to come to an End
 » Novel Strain of FMD in Gaza Strip
 » Genetic Trends a Double-Edged Cleaver in Markets

   Korea, South

 » Party Chief Calls for Halt of US Beef Imports
 » South Korea Sends Group to Analyse BSE Situation
 » Local Beef Consumption not Affected by US BSE

Animax Veterinary Health
   Japan

 » Japan Remains Composed but Vigilant on BSE Issue

   Australia

 » Weekly Cattle Summary
 » Drought Support Casualty of Fed Budget Blowout
 » Bank Cuts Rates: Will Farmers See the Benefits?
 » Sluggish April for Australian Beef Shipments
 » Climate Clever Beef - Reducing GHG Emissions

   European Union

 » OIE: More Schmallenberg Outbreaks Confirmed

   Denmark

 » More Flexibility, Less Bureaucracy in Farm Subsidies
 » Fish Oil, Cow Manure Combine to Produce Biogas

Pfizer Animal Health
   Thailand

 » Thailand Bans US Beef

   New Zealand

 » Cow Pooling/Homekill Help Connect Public with Food

   Germany

 » OIE: Further Schmallenberg Cases in Germany



That's all for this week!

Ed.
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