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1、第30卷第3期华南农业大学学报Vo.l30,No.32009年7月JournalofSouthChinaAgriculturalUniversityJu.l2009二甲酸钾、苯甲酸和山梨酸对黄羽肉鸡生长性能与胴体品质的影响户陆女,王松波,朱晓彤,高萍,范炳秋,张永亮,江青艳,束刚(华南农业大学动物科学学院,广东广州510642)摘要:为探讨二甲酸钾、苯甲酸和山梨酸对黄羽肉鸡生长性能和胴体品质的影响,360羽21日龄雌性黄羽肉鸡随机分为对照组和3个处理组(在基础日粮中分别添加二甲酸钾、苯甲酸和
2、山梨酸,添加量均为6g/kg),每组5个重复,每个重复18只.试验6周.分别于42和63日龄称其体质量并计算平均日增质量、平均日采食量和料质量比.试验结束后屠宰测定腹脂率、胸肌率和腿肌率,另采集胸肌和腿肌样品测定pH和失水率,以及腿肌糖原含量、乳酸脱氢酶和琥珀酸脱氢酶活性.试验结果表明:日粮中添加苯甲酸能够显著降低肉鸡平均日增质量和日采食量,并显著降低肉鸡腹脂率;日粮中添加山梨酸能够显著提高肉鸡的饲料转化效率,而二甲酸钾对试验鸡的生长性能无显著性影响.3种有机酸均具有降低胸肌和腿肌pH的趋势,显著提高肌肉的系水力,但对胸肌率和腿肌率均无
3、显著影1h响,对肌肉乳酸脱氢酶和琥珀酸脱氢酶活性亦无显著影响.关键词:有机酸;黄羽肉鸡;生长性能;胴体品质;糖原;酶活性中图分类号:S831.5文献标识码:A文章编号:1001411X(2009)03007204EffectsofPotassiumDiformate,BenzoicAcidandSorbicAcidontheGrowthPerformanceandCarcassQualityofYellowFeatheredBroilersHULun,WANGSongbo,ZHUXiaotong,
4、GAOPing,FANBingqiu,ZHANGYongliang,JIANGQingyan,SHUGang(CollegeofAnimalScience,SouthChinaAgriculturalUniversity,Guangzhou510642,China)Abstract:Toinvestigatetheeffectsofpotassiumdiformate,benzoicacidandsorbicacidonthegrowthperformanceandcarcasstraitsofyellowfeatheredbro
5、ilers,36021dayoldfemalebirdswererandomlydividedintocontroldietandthreetreatmentgroups(supplementedwith6g/kgpotassiumdiformate,benzoicacidandsorbicacidrespectively).Eachgrouphadfivereplicates.Theexperimentlastedfor6weeks.At42dand63dofage,averagedailygain,feed/gainwerede
6、tected.ThebreastandlegmusclesampleswerecollectedtodetectthepHvaluesandwaterholdingcapacity,aswellasthecontentofglycogen,theactivityoflacticaciddehydrogenase(LDH)andsuccinicaciddehydrogenase(SDH)inthighmuscle.Theresultsindicatedthatsupplementationwithbenzoicacidsignifica
7、ntlydecreasedtheaveragedailygain(ADG)andaveragedailyfeedintake(ADFI),whilethefeedconversionefficiencywasmarkedlyincreasedinsorbicacidgroup.Butnoobviouslychangeofgrowthperformancewasfoundinpotassiumdiformategroup.Theabdominalfatpercentage(AFP)wassignificantlydecreasedinb
8、enzoicacidgroup,whileboththebreastmusclepercentage(BMP)andlegmusclepercentage(LMP)wereunaffectedbyallt
