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http://dx.doi.org/10.5851/kosfa.2007.27.3.284

Effects of Copper and Zinc Supplementation on Growth Performance, Nutrient Digestibility, Meat and Carcass Characteristics in Finishing Pigs  

Kim, Y.H. (Swine Research Division, National Livestock Research Institute)
Kim, H.J. (Department of Animal Resource & Science, Dankoon University)
Park, J.C. (Swine Research Division, National Livestock Research Institute)
Jung, H.J. (Swine Research Division, National Livestock Research Institute)
Cho, J.H. (Department of Animal Resource & Science, Dankoon University)
Chen, Y.J. (Department of Animal Resource & Science, Dankoon University)
Yoo, J.S. (Department of Animal Resource & Science, Dankoon University)
Kim, I.C. (Swine Research Division, National Livestock Research Institute)
Lee, S.J. (Swine Research Division, National Livestock Research Institute)
Kim, I.H. (Department of Animal Resource & Science, Dankoon University)
Publication Information
Food Science of Animal Resources / v.27, no.3, 2007 , pp. 284-289 More about this Journal
Abstract
This study was conducted to investigate the effects of copper and zinc supplementation on growth performance, nutrient digestibility, and meat and carcass characteristics in finishing pigs. A total of 72 $(Landrace{\times}Yorkshire{\times}Duroc)$ pigs (58.47 kg initial BW) were assigned to 6 treatments in a $2{\times}3$ factorial design $(Zn\;levels{\times}Cu\;levels)$. The sources of zinc and copper were Zn-methionine chelate and Cu-methionine chelate, respectively. Zinc levels used were 80 and 120 ppm and copper levels used were 10, 30 and 60 ppm. Throughout the entire experimental period, the average daily gain (ADG) and average daily feed intake (ADFI) were not significantly affected by Cu or Zn levels, or their relative levels. The G:F ratio was significantly affected by the relative levels of Cu and Zn (p<0.05), specifically at 30 ppm Cu and 120 ppm Zn. Dry matter digestibility was significantly affected by the levels of Cu (p<0.02), Zn (p<0.01) and the relative levels of each (p<0.04), in particular at 30 ppm Cu and 120 ppm Zn. Nitrogen digestibility was significantly affected by Zn levels (p<0.01) and the combination of 30 ppm Cu and 120 ppm Zn (p<0.03). The $L^*-value$, shear force, cooking loss and pH were not significantly affected by Cu levels, Zn levels or their combination. The $a^*- (p<0.04)\;and\;b^*- values (p<0.01)$ were significantly affected by Zn levels at 80 ppm. The Water hoding capacity was significantly affected by Cu and Zn in combination (p<0.01) at 10 ppm Cu and 120ppm Zn. The carcass weight, backfat thickness and carcass grade were not significantly affected by Cu levels, Zn levels or their relative levels. The carcass percentage was significantly affected by the combination (p<0.04) of 30ppm Cu and 120ppm Zn. In conclusion, dietary supplementation of Cu and Zn at 30 and 120 ppm, respectively, is effective for feed efficiency, nutrient digestibility and carcass percentage, while at the levels of Cu at 10 ppm and Zn at 120 ppm have effects on WHC.
Keywords
copper; zinc; growth performance; nutrient digestibility; meat and carcass characteristic;
Citations & Related Records
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Times Cited By Web Of Science : 0  (Related Records In Web of Science)
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