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http://dx.doi.org/10.5187/JAST.2007.49.5.657

Effects of Caprylic Acid and Cyclodextrin Complex on In vitro Fermentation Characteristics and Methane Production  

Kim, K.H. (National Institute of Animal Science, RDA)
Seol, Y.J. (National Institute of Animal Science, RDA)
Lee, S.S. (Department of Dairy science, College of Agriculture and Science, Gyeong Sang National University)
Oh, Y.G. (National Institute of Animal Science, RDA)
Nam, I.S. (National Institute of Animal Science, RDA)
Kim, D.H. (National Institute of Animal Science, RDA)
Choi, C.W. (National Institute of Animal Science, RDA)
Publication Information
Journal of Animal Science and Technology / v.49, no.5, 2007 , pp. 657-666 More about this Journal
Abstract
This study was conducted to evaluate the effects of dietary addition of caprylic acid(CA)-cyclodextrin (CD) complex on in vitro fermentation characteristics, total gas and methane production. Experiment was done with six treatment groups; 1) no CA-CD complex(control), 2) CA 20 mg(T1), 3) CD 830 mg(T2), 4) CA-CD complex 425 mg(T3), CA-CD complex 850mg(T4), CA-CD complex 1,700 mg(T5). Ruminal pH, ammonia and total VFA concentrations of T2, T3, T4 and T5 were lower(P<0.05) than those of control and T1 for the 12h incubation. The increase in molar percentage of propionate was observed in T4 and T5 compared with control and T2 for the 8h incubation(P<0.05), however, the ratio of acetate to propionate was unchanged in all treatments. Total gas of T1 was lower than that of control, but T2, T3, T4 and T5 were higher compared with control for 12h incubation(P<0.05). If the methane ratio (as %) to total gas for all treatments was compared, T3, T4 and T5(CA-CD supplemented groups) averaged 2.7% whereas control, T1 and T2 showed 3.4, 2.8 and 5.1%, respectively. Therefore, according to these results, it might be concluded that supplementation of CA-CD complex could reduce methane production without disrupting ruminal fermentation.
Keywords
Caprylic acid; Cyclodextrin; Methane; Rumen;
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