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KMID : 1025520000420010037
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Journal of Animal Science and Technology
2000 Volume.42 No. 1 p.37 ~ p.44
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Study for the Development of Antibiotics - Free Diet for Weanling Pigs
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Ko T. C.
Kim J. D.
Bae S. H.
Han Y. K.
Han In-Kyu
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Abstract
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An experiment was conducted to determine the effect of mannanoligosaccharide, yucca extract, β-glucan and organic acid on growth performance, nutrients digestibility and amino acid digestibility in pigs weaned at 21 days of age. One hundred and eighty piglets (5.82 kg average body weight, average 28 d of age) weaned at 21 days old were assigned to six treatments, which were Antifree group (basal diet), Anti group (basal diet + 120 ppm chlortetracycline, CTC-125 , JEIL VET. CHEM. Co. Ltd.), MOS group (basal diet + 0.2% mannanoligosaccharide, BIO-MOS , Alltech Inc.), YE group (basal diet + 0.012% yucca extract, Fibergest , P. S. F Organic Inc.), GLC group (basal diet + 0.2% β-glucan, Macrogard , Biomaczymal Co.) and CAL group (basal + 1% organic acid, Calprona-P , Verdugt B. V.). Each treatment has 6 replicates with 5 piglets in each replicate.
During day 0~14, there were no significant differences in ADG, ADFI and FCR among treatments. During day 15~42, there were no significant differences in ADF and ADFI among treatments. In this period, Antifree group showed higher (P＜0.05) FCR compared with CAL group. Overall, there were no significant differences in ADG and ADFI. In addition, Antifree group showed lower (P＜0.05) FCR compared with GLC and CAL groups (P＜0.05).
There were no significant differences in all nutrients digestibility, essential and non-essential amino acids digestibility among treatments.
Total feed cost was lower in YE group compared with GLC group (P＜0.05). GLC group showed higher (P＜0.05) total feed cost per total weight gain compared with other treatments except CAL group.
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KEYWORD
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Mannanoligosaccharide, Yucca extract, β-glucan, Organic acid, Weanling pigs
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