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KMID : 1025520030450040559
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Journal of Animal Science and Technology
2003 Volume.45 No. 4 p.559 ~ p.568
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Effects of Dietary Probiotic on Performance, Noxious Gas Emission and Microflora Population on the Cecum in Broiler
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Abstract
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This study was carried out to investigate the effect of probiotics on the performance, nutrients digcstibility, noxious gas emission and microflora population on the cecum of broilers. A total of 120 broilers, consisted of 4 treatments X 3 replicates X 10 broilers per replicated, were fed the experimental diets containing 0, 0.1, 0.3 and 0.5％ probiotics for 5 weeks. Broilers fed the diets containing 0.1 and 0.3％ probiotic had higher (p＜0.05) body weight gain and feed conversion than those of the others from the 3rd to 4th week. Broilers fed 0.3％ probiotic had higher (p＜0.05) body weight gain and feed conversion than those of the other levels from the 5th to 6th week. Broilers fed the diets containing 0.1％ and 0.3％ probiotic had higher (p＜0.05) body weight gain and feed conversion than those of the others from the 2nd to 6th week. Dry matter digestibility was significantly (p＜0.05) improved with 0.3％ probiotic. Emission of ammonia and sulfate hydrogen gas was significantly (p＜0.05) decreased at 6th week. However, there was no (p＜0.05) difference at the levels of 0, 0.1, 0.3 and 0.5％ at the 4th weeks. There was an increase in the lactobacillus sp, but there was decrease in the microflora population of coliforms in the cecum of broiler with 0.1％ and 0.3％ probiotics.
These results indicated that the compound probioties of 0.1 ~ 0.3％ were effective in the body weight gain, feed conversion, nutrients digestibility, noxious gas emission and microflora population on the cecum in broilers.
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