The Effect of Horseradish Powder Level in Fattening Pig Diet on Odorous Compound Concentration from Manure
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 | Park, K.H., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Yang, S.H., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Song, J.I., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Jeon, J.H., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Lee, J.Y., National Institute of Animal Science, RDA, Suwon, Republic of Korea | Ohh, S.J., Kangwon National University, Chuncheon, Republic of Korea | Sung, H.G., Adbiotech Co. Ltd., Chuncheon, Republic of Korea | Choi, D.Y., 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 performed to test the effect of horseradish powder in fattening pig diet on odorous compound concentration from manure. Twenty fattening boars [Landrace × Yorkshire) × Duroc] weighing an average body weight of 68.4±4.95 kg were randomly assigned to one of 4 treatments (horseradish level in diets: 0, 0.01, 0.02, 0.03%) based on their body weight. 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. Concentration of volatile fatty acids (VFAs) was highest (p less than 0.05) when pigs fed diet with 0.02% horseradish powder. Level of phenol compounds including phenol and p-cresol were decreased (p less than 0.05) in 0.01~0.02% horseradish treatment group compared with control group. Concentration of indoles including indole and skatole was lowest (p less than 0.05) in 0.03% horseradish treatment group compare to others. Therefore, results from our current study suggest that the optimal levels of horseradish powder in diet for reducing phenol and indole compounds in pig manure were 0.02 and 0.03%, respectively.
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