Abstract
J. H. Kim*, S. C. Kim** and Y. D. Ko**Korea Applied Microorganism Industrial Research*,College of Agriculture and Life Science, Gyeongsang National University**ABSTRACTThis study was conducted to investigate the effect of dietary supplementation of zeolite on growth performance,carcass characteristics and fecal ammonia gas release in the finishing pigs. A total of 120 crossbred finishingpigs (50.2±1.4kg, Landrace×Yorkshire×Duroc) were assigned to 4 treatments and randomly divided into 12groups. They were divided between early finishing period (50~80kg) and late finishing period (80~120kg).Finishing pigs were fed on a basal diet supplemented with 0, 1, 2 and 4% levels of zeolite. Average daily gainand feed conversion were significantly (P<0.05) improved by the dietary supplementation of 4% zeolite comparedwith other treatments during overall period. In the finishing periods, ammonia gas emission was reduced (P<0.05) in 4% zeolite treatment more than that of the other treatments. Carcass weight and back fat thicknesseswere not affected by zeolite treatments. But, the appearance of A grade pork was increased by the dietarysupplementation of 4% zeolite. Feed cost was linearly decreased by increasing the supplementation of zeolite.According to this study, 4% supplement of zeolite is suitable for the improvement of carcass quality and feedconversion, the reduction of fecal ammonia gas emission and feed cost per body weight gain.(Keywords : Zeolite, Finishing pig, Performance, Carcass characteristic, Ammonia gas)
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