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The Effect of Horseradish Powder and Mushroom waste in Fattening Pig Diet on Odorous Compound Concentration from Slurry  

Lee, K.H. (National Institute of Animal Science, RDA)
Hwang, O.H. (National Institute of Animal Science, RDA)
Yang, S.H. (National Institute of Animal Science, RDA)
Park, K.H. (National Institute of Animal Science, RDA)
Lee, J.Y. (National Institute of Animal Science, RDA)
Jeun, B.S. (National Institute of Animal Science, RDA)
Ohh, S.J. (Kangwon National University)
Lee, S.S. (Sunchon National University)
Yoo, Y.H. (National Institute of Animal Science, RDA)
Cho, S.B. (National Institute of Animal Science, RDA)
Publication Information
Journal of Animal Environmental Science / v.18, no.sup, 2012 , pp. 35-40 More about this Journal
Abstract
This study was to performed to investigate the effect of horseradish powder and mushroom waste in fattening pig diet on odorous compound concentration from slurry. Twenty fattening boars [Landrace${\times}$Yorkshire) ${\times}$ Duroc] weighing an average body weight of $78.4{\pm}8.88$ kg were randomly assigned to one of 4 treatments (control, horseradish 0.03%, mushroom waste 0.5%, and combination; horseradish 0.03% + mushroom waste 0.5%). This experiment was a randomized complete block (RCB) design using 5 pigs per treatment with 1 pig per metabolizable cage. Pigs were fed experimental diet (amount proportional to 3% of their body weight) twice a day (09:00 and 16:00) for 7 d after having 14 d adaptation period. Experimental diets were mixed with water by 1:2.5 v/v. Odorous compounds in slurry including acetate, propionate, butyrate, trans fatty acid isomers were not different (P>0.05) among treatments. There was no difference (P>0.05) in the levels of phenol compounds including phenol and p-cresol in slurry among treatments. Concentration of indole was lower (P<0.05) in horseradish group compared with others. Skatole level was highest in control and horseradish group, middle in mushroom waste group, and lowest in combination group (P<0.05). Concentration of indole compounds was lowest (P<0.05) in combination group. Data from our current study suggest that indole compounds in slurry can be reduced by administrating pigs with 0.03% horseradish powder and 0.5% mushroom waste in their diet.
Keywords
Horseradish; Mushroom waste; Feed; Phenol; Indole;
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