The Effect of Horseradish Powder and Mushroom waste in Fattening Pig Diet on Odorous Compound Concentration from Slurry
2012
Lee, K.H., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Hwang, O.H., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Yang, S.H., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Park, K.H., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Lee, J.Y., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Jeun, B.S., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Ohh, S.J., Kangwon National University, Chuncheon, Republic of Korea | Lee, S.S., Sunchon National University, Sunchon, Republic of Korea | Yoo, Y.H., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Cho, S.B., National Institute of Animal Science, RDA, Suwon, Republic of Korea
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×Yorkshire)×Duroc] weighing an average body weight of 78.4±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 greater than 0.05) among treatments. There was no difference (P greater than 0.05) in the levels of phenol compounds including phenol and p-cresol in slurry among treatments. Concentration of indole was lower (P less than 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 less than 0.05). Concentration of indole compounds was lowest (P less than 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.
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