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KMID : 1024620070270010067
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Food Science of Animal Resources
2007 Volume.27 No. 1 p.67 ~ p.72
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Effect of Feeding Illite on Performance and Meat Quality Characteristics of Finishing Pigs
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Kim Hee-Yoon
Kim Young-Jik
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Abstract
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We investigated the effects feeding illite on growth performance and meat quality characteristics in finishing pigs. Forty-eight pigs (; average initial body weight) were used in a 50 day experiment. Pigs were randomly placed into one of four experimented diet groups (0, 0.2, 0.5 and 1% illite) and were slaughtered at approximately 110 kg live weight. Although there were no significantly differences in daily weight gain, feed intake and feed conversion between controls and groups fed illite, those values were increased as increasing of illite concentration in feed. Carcass weight, carcass ratio and backfat thickness were not affected by dietary illite supplementation. However, the percentage of A grade carcasses were significantly increased by dietary supplement of 1.0% illite. There were no significantly differences in moisture, crude protein and crude ash between controls and groups fed illite, but the crude fat of 1.0% illite supplemented groups was significantly lower than other groups (p<0.05). All muscles from control and treatment groups had normal pH 5.55-5.68. However, lightness () values of pork decreased as increasing illite supplement. Whereas red-ness () and yellowness () values were not significantly changed. In fatty acid composition, palmitoleic acid and linoleic acid were significantly higher in 1.0% illite dietary group, saturated fatty acid was decreased and unsaturated fatty acid was increased by 0.5-1.0% illite supplementation.
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KEYWORD
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fatty acid, illite, growth performance, meat and fat color, meat quality
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