마늘껍질 생균제 급여가 산란계의 생산성 및 계란 품질에 미치는 영향
Effect of Dietary Garlic-husk Probiotics on Laying Hens Performance and Egg Quality
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본 연구는 마늘껍질 생균제 급여가 산란계의 생산성 및 계란 품질에 미치는 영향을 구명하고자 실시하였다. 60주령의 산란계(Hy-line Brown)를 4개 처리구(control, T1, T2 및 T3)로서 처리당 6반복,반복 당 6수씩 총 144수를 공시하였다. 시험구인 T1, T2 및 T3는 마늘껍질 생균제를 각각 0.5%,1.0%, 2%를 첨가하여 4주간 급여하였으며, 산란계의 생산성 및 계란 품질을 분석하였다. 난중은 처리구들간 유의차가 없었으나, 사료섭취량은 대조구에 비해 마늘껍질 생균제 0.5%와 2% 급여구인 T1 및T3에서 높게 나타났다(P<0.05). 계란생산량은 모든 마늘껍질 생균제 급여구에서 대조구에 비해 높게나타났으며, 마늘껍질 생균제 급여량이 증가할수록 계란 생산량 또한 증가하였다(P<0.05). 계란품질을평가하는 난각강도, 난각두께, 난황높이 및 haugh unit 값에선 유의차가 없었으나(P>0.05), 마늘껍질생균제 급여시 증가됨을 확인하였다. 난황 내 아미노산 조성 결과, T2에서 높은 황함유아미노산 값을나타내었으며, T3에서 가장 높은 불포화지방산 함량을 나타내었다. 또한 마늘껍질 생균제 급여량이 증가할수록 불포화지방산 함량이 높게 나타났다(P<0.05). 따라서 마늘껍질 생균제 급여는 산란계의 사료섭취량 및 계란생산성 증가뿐만 아니라 계란 품질을 개선시키는 것으로 사료된다.
Abstract
This study was conducted to investigate the effects of dietary garlic-husk (GH) probiotics onthe increasing of performance in lay hens and quality properties of egg. A total of 144, 60week old Hy-line Brown lay hens were assigned to one of the following four dietary treatment;control (basal diet), T1 (basal diet with 0.5% GH probiotics), T2 (basal diet with 1.0% GHprobiotics), and T3 (basal diet with 1.5% GH probiotics) for 4 weeks. Egg weight (g) was notsignificantly different among treatment (P>0.05). However, feed intake (g/day) was significantlyhigher in the 0.5% and 2% GH probiotics than the control (P<0.05). Dietary supplementationwith GH probiotics led to increased egg production (%) in laying hens (P<0.05). Increasing thelevel of GH probiotics supplementation resulted in higher egg production values. Egg qualitysuch as eggshell strength, eggshell thickness, albumin height and haugh unit values tended to beimproved as in increase of GH supplementation as dietary supplementation with GH probiotics,but was not significantly different (P>0.05). Dietary supplementation with T2 resulted in significantly higher sulfur-containing amino acid value in egg yolk compared with othertreatment samples but was not significantly different between the control (P>0.05). There was alinear increase in unsaturated fatty acid values with increasing levels of dietary GH probiotics,which was significantly higher in the T3 treatment sample (P<0.05).
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