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Effects of Dietary Supplementation of Complex Probiotics on Performance in Laying Hens  

나재천 (축산기술연구소 가금과)
김태호 (축산기술연구소 가금과)
서옥석 (축산기술연구소 가금과)
유동조 (축산기술연구소 가금과)
김학규 (축산기술연구소 가금과)
이상진 (축산기술연구소 가금과)
김상호 (축산기술연구소 가금과)
하정기 (경상대학교 축산학부)
김재황 (경상대학교 축산학부)
Publication Information
Korean Journal of Poultry Science / v.30, no.3, 2003 , pp. 145-150 More about this Journal
Abstract
A feeding trial was carried out to investigate the effect of dietary complex probiotics on performance. egg qualities and intestinal microflora in laying hens. Three hundred twenty ISA Brown laying hens, 34 weeks of age, were randomly allotted to four dietary treatments containing 0, 0.1, 0.2 and 0.4% complex probiotics for 12 weeks. There were four replicates per treament. Total egg production, soft and broken egg number tended to improve as dietary complex probiotics increased, but was not significantly different. Average egg weight was significantly higher in the 0.1% and 0.2% complex probiotics than the control(P<0.05). Daily egg mass also increased by adding complex probiotics compared to that of control, but was not statistically different. No significant difference was found in feed intake and feed conversion ratio. Eggshell breaking strength and thicknes were not significantly different, whereas yolk color was significantly lower in the supplemental 0.2% probiotics than the comtrol at 12 weeks of age(P<0.05). There was no significant difference in Haugh unit. Total number of cecum Lactobacillus and naerobes were significantly higher in the complex probiotics than control(p.0.05). However, the number of ileal Lactobacillus and naerobe were not significantly different. It was concluded that dietary complex probiotics could improve the egg weight and intestinal beneficial microbes.
Keywords
complex probiotics; laying hens; lactobacillus; performance; intestinal microflora;
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Times Cited By KSCI : 1  (Citation Analysis)
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