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Dr. Brian Rossnagel
- University of Saskatchewan |
| Farmscape for March 28, 2003 (Episode 1209)
The University of Saskatchewan plans to yield test two new low phytate lines of hulless barley this summer at sites in Saskatchewan and Manitoba.
Scientists at the University of Saskatchewan's Crop Development Centre have successfully back crossed a 50 percent phytate reduction into CDC McGuire and a 75 percent reduction into CDC Freedom.
About 40 of the most advanced lines were multiplied this winter in New Zealand and about two thirds of those lines will enter multiple site yield trials in Saskatchewan and Manitoba for 2003.
Barley Breeder Dr. Brian Rossnagel says the benefits of the low phytate trait apply when feeding the grain to livestock, primarily hogs but also chickens.
Clip-Dr. Brian Rossnagel-University of Saskatchewan
If you have more free phosphorus in the grain instead of being tied up in the form of phytate the animal absorbs and uses that phosphorus.
You don't have to add as much dicalcium phosphate to the diet and it also means that some of the other minerals are available which can be important.
Perhaps most important, any phosphorus that you put in the front end of the animal in the form of phytate ends up going out the back end of the animal in the form of phosphorus and thus potential pollution from that manure.
If the phosphorus in the barley is in the form of free phosphorus the pig can actually use it so that's the major advantage there.
The advantage of hulless over hulled is the higher energy density which makes the feed more valuable.
The other advantage is that, because most of the toxin when you do have fusarium on your barley, will be on the hull.
Hulless barleys normally have less toxin in the bin because most of it's left in the field.
Dr. Rossnagel says, because the new lines are backcrosses to CDC McGuire and CDC Freedom, they should be 98 percent those varieties but have the low phytate trait so the expectation is that they'll perform exactly as their parent varieties in the yield trials.
He says the goal is to select the best one or two lines for the 2004 coop tests for potential release in about 2006.
For Farmscape.Ca, I'm Bruce Cochrane.
*Farmscape is a presentation of Sask Pork and Manitoba Pork Council |
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© Wonderworks Canada
2003 |
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