|
KMID : 1012320060090020092
|
|
Nutritional Sciences
2006 Volume.9 No. 2 p.92 ~ p.96
|
|
|
Effects of Dietary Canola Oil on Growth, Feed Efficiency, and Fatty Acid Profile of Bacon in Finishing Pigs and of Longissimus Muscle in Fattening Horses
|
|
Joo Eun-Sook
Yang Young-Hoon
Lee Seung-Chul
Lee Chong-Eon
Cheoung Chang-Cho
Kim Kyu-Il
|
|
|
Abstract
|
|
|
|
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 (6.25㎡/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 (α-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±SE, 244±5kg) were blocked by sex and weight, and two horses of the same sex and similar body weight were allotted to one (15㎡/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 α-linolenic acid content without deleterious effects on growth of pigs and horses.
|
|
|
KEYWORD
|
|
|
Pigs, Horses, Canola oil, Fatty acid profile, α-linolenic acid
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|
|