The evaluation of heat and lignosulfonate treated canola meal as sources of rumen undegradable protein for lactating cows

Two studies were conducted to evaluate the effectiveness of moist heat and lignosulfonate (LS0₃) in increasing the rumen undegradable fraction of canola meal for use as a protein supplement for dairy cattle. In the first study, the in situ nylon bag and mobile nylon bag techniques were utilized to determine the dry matter (DM) and crude protein (CP) degradability of canola meal treatments in the rumen, intestines and total tract. Treatments consisted of untreated canola meal and canola meal heated at 100°C, with or without 5% LS0₃ (wt wt*1), for 0, 30, 60, 90 or 120 min. Results indicated that treatment of canola meal with or without 5% LS0₃ and heated at 100°C for 120 min was effective in reducing (P