Studies were carried out to determine the effect of feeding diet containing 5% canola oil on growth, feed efficiency, and fatty acid profile of bacon in finishing pigs and of longissimus muscle in horses fattening for meat production. In experiment 1, twenty cross-bred barrows and twenty cross-bred gilts (average weight, 80 kg) were blocked by sex and weight, and five barrows or five gilts were allotted to one of eight pens $(6.25m^2/pen)$, respectively. Four pens (two with barrows and two with gilts) randomly selected were assigned to a control diet containing 5% tallow and the remaining four pens to a diet containing 5% canola oil. The average daily weight gain, daily feed intake and feed efficiency over a 6-wk feeding period were not different (p>0.05) between the two diets, nor was backfat thickness. Fatty acid profile in bacon fat showed that the 0-3 fatty acid ($alpha-linolenic$ acid) content in pigs fed diet containing 5% canola oil was approximately three times (P<0.01) as much as in pigs fed tallow. In experiment 2, thirty-two Jeju horses (average $weight{pm}SE,;244{pm}5kg$) were blocked by sex and weight, and two horses of the same sex and similar body weight were allotted to one $(15m^2/pen)$ of eight pens. Eight pens (four with males and four with females) selected randomly were assigned to a control diet containing 5% tallow and the remaining eight pens to a diet containing 5% canola oil. The average daily weight gain, daily feed intake and feed efficiency for concentrates without roughages over a 5-month feeding period were not different (P>0.05) between the two diet groups. Fatty acid profile in the muscle fat showed that the 0-3 fatty acid (a-linolenic acid) content in horses fed diet containing 5% canola oil was approximately two times (P<0.01) that in horses fed tallow. The increased (P<0.01) 0-3 fatty acid content in pigs and horses fed canola oil decreased the ratio of n-6 to n-3 fatty acids compared to the control, indicating a significant improvement in pork and horsemeat fatty acid profile for health benefit. Our study demonstrated that feeding diet containing 5% canola oil may help produce pork and horsemeat with more health benefit, increasing their $alpha-linolenic$ acid content without deleterious effects on growth of pigs and horses.