CAJ | 학술논문

本文旨在研究菊苣提取物对蛋鸡生产性能、鸡蛋品质、肠道菌群、血清胆同醇和卵黄胆同醇的影响.300只尼克红蛋鸡随机分为5组,每组6个重复,每个重复10只,各组日粮中分别添加0、0.5%、1.0%、1.5%的菊苣提取物和1.0%的菊粉,试验进行4周.结果表明:与对照相比,不同水平的菊苣提取物或菊粉对蛋鸡产蛋率、蛋重、采食量、料蛋比、破蛋率、蛋黄重、蛋壳厚度和哈氏单位没有显著影响(P>0.05),但能显著降低鸡蛋胆固醇浓度(mg/g蛋黄)和含量(mg/蛋黄)(P<0.05),1.5%菊苣提取物添加组的动脉粥样硬化指数显著降低(P<0.05);日粮添加菊苣提取物或菊粉显著降低蛋鸡盲肠大肠杆菌数量和pH(P<0.05),1.5%菊苣提取物添加组和菊粉添加组显著增加盲肠双歧杆菌数量(P<0.05);鸡蛋胆固醇含量和盲肠大肠杆菌数量随菊苣提取物添加水平的增加线性降低(r=-0.957和r=-0.977)(P<0.05).结论:本试验在蛋鸡日粮中添加菊苣提取物或菊粉能显著降低鸡蛋胆固醇和盲肠有害菌(大肠杆菌)的数量,且不影响蛋鸡生产性能和鸡蛋品质.故在蛋鸡日粮中添加菊苣提取物或菊粉可为生产低胆同醇鸡蛋提供一条途径.
본문지재연구국거제취물대단계생산성능、계단품질、장도균군、혈청담동순화란황담동순적영향.300지니극홍단계수궤분위5조,매조6개중복,매개중복10지,각조일량중분별첨가0、0.5%、1.0%、1.5%적국거제취물화1.0%적국분,시험진행4주.결과표명:여대조상비,불동수평적국거제취물혹국분대단계산단솔、단중、채식량、료단비、파단솔、단황중、단각후도화합씨단위몰유현저영향(P>0.05),단능현저강저계단담고순농도(mg/g단황)화함량(mg/단황)(P<0.05),1.5%국거제취물첨가조적동맥죽양경화지수현저강저(P<0.05);일량첨가국거제취물혹국분현저강저단계맹장대장간균수량화pH(P<0.05),1.5%국거제취물첨가조화국분첨가조현저증가맹장쌍기간균수량(P<0.05);계단담고순함량화맹장대장간균수량수국거제취물첨가수평적증가선성강저(r=-0.957화r=-0.977)(P<0.05).결론:본시험재단계일량중첨가국거제취물혹국분능현저강저계단담고순화맹장유해균(대장간균)적수량,차불영향단계생산성능화계단품질.고재단계일량중첨가국거제취물혹국분가위생산저담동순계단제공일조도경.
The present study was conducted to investigate the effects of chicory water-soluble extract(CWE)on performance,egg quality,gut microflora,serum and yolk cholesterol in laying hens.A total of 300 Brown Nick laying hens were divided randomly into 5 groups with 6 replicates of 10 hens each,and fed diets containing 0(control),0.5%(CWE0.5),1.0%(CWE1.0)and 1.5%(CWE1.5)chicory water-soluble extract,respectively,as well as 1.0% inulin(I1.0)during 4 weeks'trial.The results showed that there were no significant differences in laying rate,average egg weight,feed intake,feed/egg,cracked egg rate,yolk weight,eggshell thickness and Haugh unit compared with the control(P>0.05).Supplementing diets with CWE or inulin significantly reduced cholesterol concentration(mg/g yolk)and total cholesterol content(mg/yolk)in egg-yolk(P<0.05).Compared with control,atherogenic index in serum was reduced by CWE1.5(P<0.05).Dietary CWE or inulin supplementation significantly reduced the number of E.coli and pH in caecum of laying hens(P<0.05).Caecum Bifidobacteria counts were increased in CWE1.5 group and I1.0 group(P<0.05).Egg-yolk cholesterol content and the number of E.coli were decreased linearly(r=-0.957 and r=-0.977,respectively,P<0.05)in accordance with increasing of dietary CWE level.It could be concluded that the incorporation of CWE or inulin in laying hens' diets could reduce egg-yolk cholesterol and caecum harmful bacteria(E.coli)counts with no any negative effects on laying hens' performance and egg quality in this trial(P<0.05).Therefore,the dietary supplementation of CWE or inulin might lead to the development of low-cholesterol eggs as demanded by health-conscious consumers.