This article written by Dr. Reynold Bergen, BCRC Science Director, originally appeared in the December 2016 issue ofCanadian Cattlemenmagazine and is reprinted on the BCRC Blog with permission of the publisher.
Barley silage is the main roughage fed in Western Canadian feedlots, but few barley breeders try to improve its feed quality. Most breeders focus on improved grain yields, malting characteristics and better disease and lodging resistance, and pay little attention to feed quality traits like protein, starch, or neutral detergent fiber (NDF) content and digestibility (NDFD).
NDF is a measure of “structural carbohydrates”, the parts of the plant that hold it up. Cattle digest NDF slowly, so NDF contributes to gut fill and can limit feed intake, growth and efficiency. In a Beef Cluster funded study published earlier this year, Dr. John McKinnon and colleagues compared 80 silage samples collected from farms from across Saskatchewan and Alberta, that had been produced from seven different barley varieties (Nair et al., Can. J. Anim. Sci. 96:598-608). In an upcoming paper, they compared three of the two-row varieties that had produced silage with similar protein, starch and NDF levels, but different NDFD, and their effects on feedlot performance and carcass traits. Continue reading →
This article written by Dr. Reynold Bergen, BCRC Science Director, originally appeared in the December 2014 issue ofCanadian Cattlemenmagazine and is reprinted on the BCRC Blog with permission of the publisher.
As a relatively small crop, barley doesn’t attract much interest from private breeding companies. There are roughly 10 million acres of barley in North America, with six million in Canada. Corn is a much larger crop, with 80 million acres seeded in the U.S. alone. Statistics Canada reports that Canada’s barley acreage has dropped by around 116,000 acres per year since 1980, while corn acreage increased by nearly 23,000 acres annually. At the same time, corn yields increased three times as fast as barley (1.8 bushels per acre per year for corn vs. less than half a bushel per acre per year for barley). These differences add up. In 2014, Canada produced almost 25% more corn than barley, using about half as many acres.
Part of the reason that corn yields have outstripped barley yields is due to fundamental differences in the plants themselves. Corn is open-pollinated, so breeding companies can cross two unrelated varieties to create a commercial variety that greatly outperforms both of its parents because of hybrid vigor. But if the seed produced by the hybrid is saved and re-seeded, Continue reading →
This article written by Dr. Reynold Bergen, BCRC Science Director, originally appeared in the July 2014 issue ofCanadian Cattlemenmagazine and is reprinted on the BCRC Blog with permission of the publisher.
Ergot develops when a fungus called Claviceps purpurea infects susceptible grass and grain plants during flowering. Rye is most susceptible annual crop, followed by triticale, then wheat. Barley and oats are less susceptible but not completely resistant. Ergot is not a concern in corn. Ergot can also infect a number of perennial grasses. Cool, damp weather conditions during the flowering period (like those in Western Canada over the last few years, and that appear to be shaping up again this summer) cause the flowers stay open longer. This allows more opportunities for ergot spores to spread and infect the seed head. Ergot spores can survive for a year on the soil surface. Less summer fallow, continuous grain-on-grain rotations and un-mowed grass in road allowances allow ergot spores to build up in the soil and help the disease cycle to continue and build.
Continued improvements in the yield and nutritional quality of barley grain and annual forages are essential to maintain a competitive cattle feeding sector in Canada.
Research currently underway, funded by the National Check-off and Canada’s Beef Science Cluster, is working to develop varieties of barley (grain and forage) and triticale (forage) with improved nutritional quality, yields, yield stability, disease resistance, and water use efficiency. This research will also expand the germplasm resources available to ensure that varietal development continues into the future.
The cool, wet conditions across parts of the country this spring, especially in Alberta and Saskatchewan, may have created the perfect environment for ergot. While virtually unheard of a decade or two ago, veterinarians and researchers agree that problems with ergot are clearly on the rise in the prairies.
What is ergot?
Ergot is a plant disease caused by the Claviceps purpurea fungus. Although traditionally associated with rye and triticale, ergot also affects wheat, barley, and a variety of grasses including bromegrass, quackgrass, wheatgrass, orchardgrass, wild rye, and bluegrasses. Continue reading →
The nutritional value of barley grain comes from its seed starch content, but a great deal of barley is used for silage, greenfeed or swathgrazing. Therefore, it is important to know the nutritional value of the cut plant.
Nutritional value largely depends on how digestible the fiber (lignin, cellulose and hemicellulose) in the stem and leaves are. Barley varieties with higher whole plant digestibility allow cattle to obtain more nutrients per tonne of feed. Some barley varieties have more digestible fiber than others.