Application of Heat Revolutionises Swine Transport Trailer Disinfection

Nov 15, 2021

The Associate Dean Research and Partnerships with the University of Saskatchewan's College of Engineering says the application of heat to kill disease causing pathogens has revolutionised the disinfection of swine transport trailers. Members of the Swine Innovation Porc Biosecurity in the Canadian Swine Transport Industry Advisory Group met last week to update efforts aimed at improving the efficiency and lowering the cost of cleaning and disinfecting swine transport trailers.

Dr. Terry Fonstad, the Associate Dean Research and Partnerships with the University of Saskatchewan's College of Engineering, says the biggest breakthrough so far has been the recognition that heat alone will inactivate disease causing pathogens.

Clip-Dr. Terry Fonstad-University of Saskatchewan:

Dry heating or heating, just heat alone will control these pathogens. Even the most persistent pathogens, and the one most persistent so far has been PED, have been inactivated at heating to 75 degrees for 20 minutes or 80 degrees for less than that. Those are temperatures that are below the boiling point of water.

They're something you actually heat a trailer to. They're actually attainable and, when we announced this to industry at a previous meeting, it was amazing to see. They opened up their phones and told their folks at home to start heating these trailers. The had dryers there.

They were drying trailers at 40 degrees and they just told their staff to turn the temperature up, get them to these temperatures and so we probably implemented it across Canada in 20 minutes from getting the results from the lab to getting it implemented, to the credit of the industry. That's probably the biggest thing, getting rid of pathogens by simply heating trucks.

Then it just becomes technical issues, how do you heat trucks, how do you verify the heat, how do you clean trucks better? All of those things are technical but that breakthrough of controlling pathogens was probably the biggest.

Source : Farmscape

Video: The 15-Year Bet Behind Every New Variety!

Canada is trying to decide how much agricultural research capacity it can afford to lose. Brian Rossnagel believes the better question is whether the country can afford to rebuild it.

The longtime barley and oat breeder makes the case with a simple fact about his profession: the consequences of today’s decisions may not become visible for 10 or 15 years.

“Pick the right parents. That’s the biggest thing,” Rossnagel says. “If you pick the wrong parents, you’re not going to get anywhere—and you don’t know that until 10 years, 15 years later.”

That warning carries particular weight as Agriculture and Agri-Food Canada moves to reduce spending and streamline parts of its science operations. The department’s 2026–27 plan anticipates the loss of approximately 665 positions by 2028–29 and says some research will be reduced where capacity exists in academia or industry. AAFC says the changes will make its science operations more cost-effective over the long term.

For Canada’s seed industry, Rossnagel’s career illustrates what is at stake.

This fall, the retired University of Saskatchewan breeder will be inducted into the Canadian Agricultural Hall of Fame. During his 35-year career at the Crop Development Centre, he helped develop more than 100 barley and oat varieties, including CDC Austenson—one of Western Canada’s most widely grown feed barleys. His induction recognizes not only those varieties, but the collaboration and research system that made them possible.

Rossnagel is quick to emphasize that none of it was the work of one person.

“The first thing I thought about was all the other people who contributed to whatever success I and my program had over the years,” he says. “We know that it’s not an individual who does this. It’s a group—a team.”

That team extends well beyond the breeder whose name appears beside a variety. It includes technicians, pathologists, quality specialists, statisticians, regional testing sites, seed growers and industry partners. It also includes the breeders who came before and those who will carry the germplasm forward.

CDC Fraser barley, for example, moved through three breeding careers. Its parents came from Brian Harvey’s program. Rossnagel advanced the material after Harvey retired, and Aaron Beattie later guided it through registration and release.

That kind of handoff is normal in plant breeding. The person who makes the original cross may never see the resulting variety reach farmers.

It also explains why lost research capacity cannot simply be switched back on when budgets improve.

“If you shut it off, it’s very, very difficult—and particularly costly—to start it up again,” Rossnagel says. “If you have to start from scratch, it’s going to be at least 10 years before anybody notices whether you’re getting anything done or not.”

The concern is not simply how many experimental lines Canada can process. Modern equipment, statistical tools and genetic technologies allow today’s breeding programs to evaluate tens of thousands of lines—far more than Rossnagel could handle when he entered the field in the early 1970s.

But efficiency and automation do not generate every idea.

“If you pare back down, and instead of having six or seven individual scientists concentrating on wheat breeding, you go down and say three people could handle all this, well, that’s half the ideas gone,” he says. “Particularly if you happen to lose the three people who had the really neat and innovative ideas, boy, that’s a problem.”

It is a timely distinction for Canadian agriculture. Consolidating programs may preserve the volume of material moving through a system, at least initially. It may not preserve the diversity of thinking, regional knowledge or willingness to pursue unconventional crosses.

That regional knowledge matters because Canadian agriculture is not one uniform production environment. A variety suited to southern Alberta may face different disease, moisture and maturity pressures than one grown in Manitoba, Ontario or Atlantic Canada.

“Agriculture is applied biology,” Rossnagel says. “Biology, all around the Earth, moves from the poles to the equator. It does not move from Newfoundland to B.C. like politics do.”