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时间:2020-05-22
《酵母培养物对土杂鸡生产性能及营养物质代谢率的影响-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第32卷第1期石河子大学学报(自然科学版)VoI.32No.12014年2月JournalofShiheziUniversity(NaturalScience)Feb.2014文章编号:1007—7383(2014)01—0043—04酵母培养物对土杂鸡生产陛能及营养物质代谢率的影响付林,杨锁柱,徐春生(1玉溪农业职业技术学院,云南玉溪,653106;2石河子大学动物科技学院,石河子832003)摘要:本试验旨在研究酵母培养物对土杂鸡生产性能及营养物质代谢率的影响,试验选择28日龄健康、体重相近的土杂鸡200只,随机分为5组,设1个对照组,饲喂基
2、础日粮,其余4个为试验组(I、Ⅱ、Ⅲ、Ⅳ组),在基础日粮中分别添加0.15%、O.20%、0.25%、0.30%的酵母培养物。结果表明:与对照组相比。各酵母培养物组肉鸡的平均日增体质量和平均日采食量均显著高于对照组(P<0.05);试验Ⅱ、Ⅲ、Ⅳ组的料重比均显著低于对照组fP<0.05),其中试验Ⅱ组的最低;与对照组相比,所有试验组粗蛋白质(CP1代谢率均明显提高(P<0.O1);粗脂肪fEE)代谢率有提高趋势,但差异不显著(P>0.05);试验I、Ⅱ组的钙、磷代谢率明显提高(P<0.05);试验Ⅱ、Ⅲ、Ⅳ组的表观代谢率(ME)显著提高(P<0.
3、05),且试验Ⅱ的最高。结论:综合分析,本试验在土杂鸡日粮中酵母培养物的适宜添加量为0.2%。关键词:酵母培养物;土杂鸡;日增体质量;料重比中图分类号:$816.79文献标志码:EfectsofYeastCultureonGrowthPerformanceandNutrientMetabolicRatesofLocalChickenFULin1~,YANGSuozhu,XUChunsheng(1YuxiAgricultureVocationTechnicalCollege,Yuxi653106,China;2Depa~mentofAnimalSc
4、ienceandTechnology,ShiheziUniversity,Shihezi832003,China)Abstract:TheaimofthisresearchwastoevaluatetheeffectsofyeastcultureOUthegrowthperformanceandnutrientmetabolicratesoflocalchicken.Twohundred28一day—oldlocalchickenswererandomlydividedinto5groups.Theexperimentlastedfor28day
5、s.Thechickensinthecontrolgroupwereonlyfedwithabasaldiet.FourtreatmentsincludingI,II,IllandIVwerefedwithabasaldietsupplementedwith0.15%,0.2%,0.25%and0-3%yeastculture,respectively.Theresuhsshowedthatboththeaveragedailygain(G)andfeed(F)intakeinexperimentalgroups(groupsI-IV)weres
6、ignificantlyhigherthanthatofthecontrolgroup(P<0.05),andtheF/GingroupsII,IIIandIVweresignificantlydecreased(尸<0.05).YeastcultureingroupsII,IIIandIVsignificantlyenhancedthenutrientmetabolicratesofcrudeproteinandAMEf尸<0.05),andtherewasanincreasingtendencyinmetabolicratesofcrudef
7、atinexperimentalgroupsaswel1.Therewasnosignificantdifferenceincrudefatk0.05).TheapparentmetabolicratesofCaandPsignificantlyincreasedingroupsIandII(尸<0.05).Inconclusion,supplementationofyeastculturecouldenhancenutrientmetabolicrates,andthenimprovedthegrowthperformanceoflocalch
8、icken.Theappropriatesupplementati0namountofyeastcultureis0.2%.Keywor
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