Four experiments using 900 crossbed pigs were conducted to determine the nutritive value of canola meal (CM) for pigs weaned at 3 or 5 weeks of age. Diets were based on barley and wheat, and CM replaced 0, 25, 50, 75 or 100% of the protein supplied by soya bean meal (SBM) on an isoenergetic and isonitrogenous basis. In Experiments 1 and 2, with pigs weaned at three weeks of age, regression analyses of the results indicated that, for each percent addition of CM to the diets, there was a significant (P < 0.001) linear decrease in average daily feed intake and average daily gain by 4 and 2 g, respectively. Regression analyses of results of Experiments 3 and 4 for pigs weaned at 5 weeks of age indicated that, for each percent inclusion of CM in the diet, there was a significant (P < 0.001) linear decrease in average daily feed intake and average daily gain by 4.3 and 3.6 g, respectively. In all 4 experiments feed-to-gain ratio was not affected (P > 0.05) by the level of CM in the diet.
Bibliographical noteFunding Information:
Financial support for this study, provided by the Canola Council of Canada, and the assistance of the staff of the University of Alberta Swine Unit, Edmonton and Prairie Swine Centre, Saskatoon, are gratefully acknowledged.