When price gets high, you can replace cottonseed meal with canola meal in mid-lactation diets without impacting milk production. That was the conclusion of a study in the May Journal of Dairy Science.
Cows fed canola meal ate about 7.5 pounds of it per cow per day. Yet, they produced virtually the same amount of milk as cows that ate as much as 12.3 pounds of cottonseed meal.
The study’s authors conclude that canola meal is “an economical substitute for cottonseed meal in mid-lactation diets when commercial access, cost, and quality (particularly crude protein content) of cottonseed meal are variable.”