Low N Sires™

 

LowN sires pathway

CRV Ambreed is excited to announce a major genetic breakthrough that will potentially provide a solution for more sustainable dairy farming in New Zealand.

Agriculture’s impact on the environment is a major topic world-wide. In New Zealand degradation of waterways is the main concern.

Much of the contamination of waterways is caused by Nitrogen leached from urine patches of cows. Reduction of Nitrogen excreted in urine is desirable to reduce this leaching.

CRV Ambreed has several research and development programmes aimed at improving farming sustainability using genetics.

Breeding to reduce Nitrogen excreted in urine is one of those programmes.

 

To discuss further or to secure your LowN Sires bull team, contact the CRV Gene Team http://www.lownsires.co.nz/contact

Or check the bulls out on the online catalogue

 

FAQ

MUN is the concentration of Urea Nitrogen contained in milk.

The daughters of LowN Sires will have lower MUN than the daughters of the average bull

Three steps to understand the pathway:
1. Breeding with LowN Sires™ will reduce MUN concentration in their progeny.
2. International research shows if MUN is reduced, then the amount of Nitrogen excreted in Urine is reduced.
3. If the amount of Nitrogen excreted in urine is reduced then the amount of Nitrogen leached will be reduced.

Nitrogen leaching on dairy farms is a problem that predominantly stems from the cow’s urine.
• The amount of Nitrogen in the urine patch is the problem
• If we reduce the amount of Nitrogen hitting the ground by breeding cows that pee less nitrogen, then leaching will be reduced.

The dietary nitrogen eaten by the cow ends up in milk protein, muscle protein, dung, gases, or urine. There has been a huge amount of work over the past seven decades to understand more about how the dietary nitrogen is partitioned but nothing is very definite around Nitrogen Use Efficiency. It is possible that the CRV work will shed some clues into this subject. Watch this space as CRV progresses this exciting discovery.

We’re not in a position to comment on the MUN-BW/NZMI relationships at present. Suffice it to say there are some LowN Sires that have high indexes.

The potential around this genetic discovery is huge.

It could potentially save New Zealand millions of kilograms in nitrogen leached from grazed pastures – potentially reducing nitrogen leaching in the New Zealand dairy herd by 20% within 20 years.
• The beauty of this discovery is that it’s very easy for farmers to implement, with no impact on their farming systems, and it provides them with the opportunity to continue farming without changing anything, such as pasture species, stocking rates or their farm systems or infrastructure.
• We think it’s a game-changer for the whole farming industry.

Compliance is a big topic for dairy farmers. Each region manages its waterways differently, and has different requirements for farmers.
• LowN Sires gives farmers a genetic tool in their toolbox to achieve profitable sustainable dairying.
• These farmers are already working hard to protect the environment, and this gives them a genetic tool to be used alongside other initiatives.
• Gains made through genetics will be in addition to gains made from other initiatives

Yes, you can reduce the amount of nitrogen by reducing your herd size – but with that goes less milk, change in management systems etc that need to be considered.

We’ve been working on this for the past five years with help from others in the industry.

• Since 2012 we measured MU (MUN) concentration in 650,000 milk samples and calculated breeding values for 4,100 sires – progeny test and proven bulls born since 1992.
• The genetics of MUN has been reported overseas, but the pathway of using MUN to reduce the amount of nitrogen leached had not been explored – possibly because cows are usually housed overseas and the issue of nitrogen leaching into waterways is not as pressing as it is in New Zealand.

There are several proposed programmes.
• There is still research to be done to further test and confirm the genetic development and CRV is working with DairyNZ, AgResearch and Lincoln University on this. CRV Ambreed is very positive about the potential benefits the discovery will deliver for farmers and the nation.

Those currently herd-testing and herd-recording with CRV Ambreed will have their cow MUN BVs from June.

 

• Farmers will need to herd-test AND herd-record with CRV Ambreeds to get this information. This is because we need the full herd parentage information to assist with the MUN BV calculations. If farmers sign up for testing and recording from June we will have the MUN breeding values of their cows by December. Two herd tests are required.
• It’s going to be important for farmers to understand the MUN values of their cows so they can make strategic decisions around culling and mating with bulls from the LowN Sires team.

We’d love to talk. Complete the online form and one of our sales representatives will be in contact with you to discuss how LowN Sires will work for you.

EVENTS

CRV Trait Day – Tokorua

NEWS

 

Media release

11 May 2017

Rural Bachelor contestants to get “hands-on” at CRV Ambreed’s Fieldays stand

 

Contestants in the Rural Bachelor competition at the national Fieldays this year will find themselves on the right end of urine tests at the CRV Ambreed stand.

CRV Ambreed sponsors the highly popular competition and each year, the rural bachelor contestants make their way to the CRV Ambreed stand to test their abilities as part of the contest.

This year they will be hands-on with some LowN Sires™ “urine tests”, but they’ll be doing the testing, not providing the samples, says CRV Ambreed Sales and Marketing Manager Mathew Macfie. “As dairy farmers will know, we have a game-changing new product on the market, called LowN Sires™, and it’s anticipated to reduce nitrogen leaching on New Zealand farms by 20% within 20 years.”

 

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Media release

11 May 2017

CRV Ambreed’s popular genetics discovery to be showcased at Fieldays 2017

 

CRV Ambreed’s genetic discovery that it anticipates will reduce nitrogen leaching on New Zealand farms by 20% within 20 years is the focus of its presence at the National Agricultural Fieldays in June.

In what’s thought to be an international first, the dairy herd improvement company is marketing bulls under the LowN Sires™ brand whose daughters are expected to have reduced concentration of Milk Urea Nitrogen (MUN). MUN is a measure of the amount of nitrogen contained as milk urea, and CRV Ambreed says there’s overwhelming international evidence of a direct connection between MUN and the amount of nitrogen excreted in urine when fed different diets.

 

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Media release

10 May 2017

CRV Ambreed’s genetics discovery in Fieldays innovation award

 

CRV Ambreed’s genetic discovery that it anticipates will reduce nitrogen leaching on New Zealand farms by 20% within 20 years will compete in the Innovation Awards at the National Agricultural Fieldays in June.

In what’s thought to be an international first, the dairy herd improvement company is marketing bulls under the LowN Sires™ brand whose daughters are expected to have reduced concentration of Milk Urea Nitrogen (MUN). MUN is a measure of the amount of nitrogen contained as milk urea, and CRV Ambreed says there’s overwhelming international evidence of a direct connection between MUN and the amount of nitrogen excreted in urine when fed different diets.

 

<—————Go to full article—————>

 

Media release

12 April 2017

R&D Scientist finds genetic link for nitrogen leaching

 

CRV Ambreed’s genetic discovery that could help reduce nitrogen leaching on New Zealand farms by 20% within 20 years is thanks to the company’s R&D scientist Phil Beatson.

Mr Beatson says over the past five years CRV Ambreed has investigated what could be done with genetics to reduce the amount of nitrogen excreted as urine. Nitrogen taken in by cows in their diet is converted into five areas: Milk protein (+ urea); growth (muscle is protein); dung; gases; and urine. “From an environmental perspective, we saw urine as being the big issue because of its impact on water quality,” Mr Beatson says.

 

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Media release

29 March 2017

Genetics discovery looking at cutting nitrogen leaching across national dairy herd – CRV Ambreed

 

CRV Ambreed has made a genetic discovery it anticipates will reduce nitrogen leaching on New Zealand farms by 20% within 20 years and result in a more sustainable dairy industry.

In what’s thought to be an international first, the dairy herd improvement company has announced it will market bulls that are desirable for traditional traits as well as being genetically superior for a new trait that is related to the amount of urea nitrogen in milk.

 

<—————Go to full article—————>

 

Media release

29 March 2017

Breakthrough genetics looking at cutting nitrogen leaching by 20% in NZ – CRV Ambreed

 

CRV Ambreed has made a genetic discovery that it anticipates will result in a more sustainable dairy industry and potentially reduce nitrogen leaching on New Zealand farms by 20% within 20 years.

In what’s thought to be an international first, the dairy herd improvement company has announced it will market bulls that are desirable for traditional traits as well as being genetically superior for a new trait that is related to urea nitrogen in milk.

 

<—————Go to full article—————>