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KMID : 1025520010430030337
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Journal of Animal Science and Technology
2001 Volume.43 No. 3 p.337 ~ p.348
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Effects of Dietary Supplementation of Fermented Feed(Bio-α(R)) on Performance of Laying Hens , Fecal Ammonia Gas Emission and Composition of Fatty Acids in Egg Yolk
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Abstract
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A study was conducted to investigate the effects of dietary supplementation of fermented feed (Bio-α^ⓡ) containing effective microorganisms such as Lactobacillus casei, Saccharomyces cerevisiae, Candida utilis, Mucor hiemalis, Streptomyces albus, Phodopseudomonas palustris and Rhodopseudomonas sphaeroides on feed intake, egg production, egg weight, concentrations of cholesterol and fatty acids(FA) in egg yolk, NH₃ gas release in litter and nutrient utilizability in laying hens. A total of 360 laying hens(42 wk old; ISA Brown) were randomly divided into 12 groups and assigned to four treatments. The hens were fed a commercially prepared basal diet supplemented with 0(control), 0.5, 1.0 or 2.0% level of Bio-α^ⓡ for three months. All levels of supplemented Bio-α^ⓡ increased(p$lt;0.05) feed intake compared with the control treatment. Egg production rates were higher (92.5 and 91.4%; p$lt;0.05) in the 0.5 and 1.0% Bio-α^ⓡ supplemented groups than control. Egg weight was significantly increased(p$lt;0.05) by the supplementation of 2.0% Bio-α^ⓡ. DM and CP utilizabilities of the 1.0% Bio-α^ⓡ group were highest(p$lt;0.05) compared with those of other groups. Ammonia gas release from litter were significantly reduced (p$lt;0.05) at all the levels of supplementation. The supplementation of 1.0% Bio-α^ⓡ increased (p$lt;0.05) docosahexaenoic acid(DHA) and reduced(p$lt;0.05) cholesterol in egg yolk compared with those of control.
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