As dairy nutritionists face tighter margins and higher performance expectations, ingredient selection must go beyond crude protein values.
Protein ingredients must deliver metabolizable amino acids and usable energy while supporting feed efficiency and income over feed cost. Research and industry experience indicate canola meal delivers on both fronts.
“Nutritionists today are not simply formulating for protein — they’re evaluating ingredients for their contribution to amino acids and energy needs,” said Essi Evans, Ph.D., E+E Technical Advisory Services. “Canola meal offers a balanced amino acid profile along with a meaningful energy contribution. That combination allows us to optimize both sides of the ration equation.”
Canola meal at first glance
Canola meal is widely regarded as a valuable ingredient in dairy rations, supported by extensive research, according to the Winnipeg, Manitoba, Canada-based Canola Council.
Since 2011, five meta-analyses have evaluated canola meal in lactating dairy diets. Across varying approaches, researchers consistently observed increased milk production — ranging from 1.54 to 5.29 pounds per cow per day — along with reductions in milk urea nitrogen of 1 to 1.5 mg/dL.
“When diets formulated to the same specifications consistently exceed expectations, it tells you something important,” Evans said. “Canola meal is often undervalued in many formulation models. The biological response we measure in cows is greater than the assigned nutrient values predict.”
That gap has led researchers to explore what Evans calls “hidden attributes” — advantages not fully captured in traditional ration models.
Hidden protein advantages
Canola meal contains a high proportion of rumen undegradable protein not accurately reflected by older assays such as the nylon bag technique. Research shows some soluble proteins degrade more slowly than previously assumed, allowing more to bypass the rumen and contribute to metabolizable protein.
“Canola meal’s storage proteins behave differently than proteins in many other vegetable sources,” Evans says. “Although soluble, a significant portion escapes rumen degradation, which supports higher milk output without increasing nitrogen waste.”
Its amino acid balance is also notable. The profile closely resembles microbial protein and milk protein composition. While many ration programs emphasize lysine and methionine, canola meal provides a broader range of essential amino acids, including methionine and cysteine.
“If the absorbed amino acid profile closely matches the cow’s requirement, there’s less energy spent correcting imbalances,” Evans said. “That efficiency shows up as lower milk urea nitrogen and improved nitrogen utilization.”
Energy: more than a calculated value
Energy is the second half of the equation. Historically, canola meal’s energy value has been conservative. However, research measuring net portal nutrient absorption shows energy supply comparable to soybean meal.
“There’s growing evidence the calculated energy values don’t fully represent what the cow actually receives,” Evans said. “When measured at the tissue level, canola meal performs alongside other major protein sources.”
Additional research shows greater-than-predicted fiber digestibility and reduced methane production when canola meal is included in diets. These factors contribute to usable energy while supporting sustainability goals.
Early lactation studies further support its value. Replacing soybean meal with canola meal has yielded 4.4 to 8.8 pounds more milk per cow per day without compromising body condition or reproduction.
“That tells us we’re not just pushing cows harder,” Evans said. “We’re supporting them more efficiently.”
Efficiency that shows up in IOFC
For nutritionists managing feed costs, the implications are clear. By delivering balanced amino acids and energy, canola meal supports precise nutrient supply without excess. That precision improves milk yield, reduces nitrogen losses and strengthens income over feed cost.
“As we refine formulation models, we’re beginning to appreciate ingredients that provide both protein quality and energy value,” Evans said. “Canola meal truly is a two-for-one fit for dairy diets.”
For more information, visit canolamazing.com.
