‘double-low’ rapeseed. He adds that, even though there have been geopolitical issues between Canada and China, imports of Canadian CM have grown since 2015, and these totalled 760,700 tonnes in the first half of 2020. Dr Haifeng Mi, an aq- uaculture nutritionist in China, identifies himself as being the first to use Canadian CM there, because of its “excellent di- gestibility and cost advantages.” He notes, however, that studies on the digestibility of Canadian CM in China’s major freshwater fish species are not complete. Mi adds that pro- cessing methods need to be developed that increase protein levels and reduce cellulose. This has already happened with cottonseed meal in China, he says, which could help make it preferable to CM over time.
Chickens CM is a common ingredient in poultry diets in Australia and Europe. “In broiler chickens, it tends to go into diets at around 5 to 7% inclusion, simply due to a space restriction,” Newkirk explains. “Broiler diets are high-density diets and the meal is high in fibre, so energy values limit its inclusion. However, we are starting to see more high oil-expelled meal being pro- duced and that’s going into broiler diets at higher levels due to its higher energy content.” He adds that CM is more suita- ble for laying hens, and he thinks “there is significant growth
potential in this area.” Although this is no longer an issue, in the past some genotypes of brown-shelled layers fed CM in higher proportions produced eggs with a fishy flavour in their yolks. CCC points to recent studies with positive findings regarding CM in diets for brown-shelled egg layers; one study for example, found that that 20% CM can be fed to these hens with excellent results. CCC also points to a few recent studies evaluating the use of CM for egg production in quail, including one showing that 10% CM can be substituted for 10% SBM with no loss of performance.
The future Newkirk believes that the use of CM in pigs, poultry and oth- er species will continue to grow because consistency and palatability is excellent (it’s fully palatable for pigs). “Much of the world has become highly dependent on SBM but, with price fluctuations and trade barriers, they are always looking for alternatives,” he adds. “Once they get some experience with CM, they usually increase its use.” When he was recently leading seminars in Malaysia, Newkirk says he was “left with the impression” that there may be significant growth for CM in that market. “Price-wise it made sense,” he says. “The nutri- tionists just need to get more familiar and comfortable with it.”
▶ ALL ABOUT FEED | Volume 28, No. 9, 2020 25
High-protein canola meal is fed to many livestock species.
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