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时间:2018-09-15
《不同比例氨基酸寡肽在肉仔鸡消化道内吸收率研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、~'115~2009年第31卷第10期ChinaPoultryVo1.31,No.10.2009不同比例氨基酸寡肽在肉仔鸡消化道内吸收率研究陈宝江,蔡辉益。,景翠,刘国华,于会民,田亚东,李建涛(1.河北农业大学动物科技学院,河北保定071001;2.中国农业科学院饲料研究所,北京100086;3.河南农业大学牧医工程学院,河南郑州450000;4.沈阳农业大学畜牧兽医学院,辽宁沈阳110161)摘要:选择21El龄AA肉仔鸡125R,随机分为5个处理,分别饲喂由不同比例游离氨基酸寡肽混合物作为氮源的纯和日粮,测定蛋白质、氨基酸表观吸收率。结
2、果显示:随着日粮中寡肽比例的增加,饲料蛋白质表观吸收率表现出先增加然后降低的趋势,其规律表现为:v=一0.0036x2+0.4601x+79.037(R2=O.9942)。当饲料蛋白的寡肽和游离氨基酸以63.903:36.097的比例存在时,日粮蛋白质将有最大的表观吸收率(93.738%);相同氨基酸以不同形式供应时,表现出不同的吸收率,以肽形式供应时苏氨酸、丝氨酸、甘氨酸、苯丙氨酸、赖氨酸吸收率明显高于游离氨基酸形式(P<0.05);而谷氨酸、缬氨酸、异亮氨酸、酪氨酸、组氨酸和胱氨酸吸收率明显低于游离氨基酸形式(P3、酸则两种供应形式未表现出吸收率上的差异(尸>0.05)。对多数氨基酸而言(Thr、Ser、Gly、Ala、Phe、Lys、Pro、Arg),随着日粮蛋白中寡肽所占比例的提高,氨基酸吸收率出现先上升然后下降的趋势,其中5寡肽,75%寡肽组吸收率一般较高。关键词:游离氨基酸;寡肽;表观吸收率AbsorptivityofAminoAcidandOligopeptideMixtureinGastrointestinalTractofBroilerCHENBaojiang,CAIHuiyi2,JINGCuiI,LIUGuohua2,YUHuimin2,4、TIANYadong3,LIJiantao(1.CollegeofAnimalScienceandTechnology,HebeiAgriculturalUniversity,Baoding,Hebei071001;2.FeedResearchInstitute。ChineseAcademyofAgriculturalSciences,Beijing100086;3.CollegeofHusbandryandVeterinary,HenanAgriculturalUniversity,Zhengzhou,Henan450000;4.Colle5、geofHusbandryandVeterinary,ShenyangAgriculturalUniversity,Shenyang,Liaoning110161)Abstract:Onehundredandtwenty-five21-day-ageAAbroilerswereselectedanddividedinto5groupsrandomly,andfedwithdiferentratiofreeaminoacid(FAA)andoligopeptide.Theapparentabsorptivityofproteinandamino6、acidwasmeasured.Theresultsshowedthattheapparentabsorptivityofproteinincreasedatfirstandthendecreasedwiththepeptidelevelincreasedandtheregressionequationwasy=-0.0036x+o.4601x+79.037(R=0.9942).Thebestabsorptivityofproteinwas93.738%whentheratioofoligopeptideandFAAwas63.903:36.7、097.Theabsorptivityofaminoacidofdifferentformwasdistinguishing.TheabsorptivityofThr,Ser,Gly,PheandLyswithpeptideformwassignificantlyhigherthanthatoffreeaminoacidformwhiletheGlu,Val,lie,Tyr,HisandCyswaslower(P<0.05).Formostaminoacid(Thr,Ser,Gly,Ala,Phe,Lys,Pro,Arg),theabsorp8、tivityincreasedatfirstthendecreasedwiththepeptidelevelenhanced.Keywords:freeaminoa
3、酸则两种供应形式未表现出吸收率上的差异(尸>0.05)。对多数氨基酸而言(Thr、Ser、Gly、Ala、Phe、Lys、Pro、Arg),随着日粮蛋白中寡肽所占比例的提高,氨基酸吸收率出现先上升然后下降的趋势,其中5寡肽,75%寡肽组吸收率一般较高。关键词:游离氨基酸;寡肽;表观吸收率AbsorptivityofAminoAcidandOligopeptideMixtureinGastrointestinalTractofBroilerCHENBaojiang,CAIHuiyi2,JINGCuiI,LIUGuohua2,YUHuimin2,
4、TIANYadong3,LIJiantao(1.CollegeofAnimalScienceandTechnology,HebeiAgriculturalUniversity,Baoding,Hebei071001;2.FeedResearchInstitute。ChineseAcademyofAgriculturalSciences,Beijing100086;3.CollegeofHusbandryandVeterinary,HenanAgriculturalUniversity,Zhengzhou,Henan450000;4.Colle
5、geofHusbandryandVeterinary,ShenyangAgriculturalUniversity,Shenyang,Liaoning110161)Abstract:Onehundredandtwenty-five21-day-ageAAbroilerswereselectedanddividedinto5groupsrandomly,andfedwithdiferentratiofreeaminoacid(FAA)andoligopeptide.Theapparentabsorptivityofproteinandamino
6、acidwasmeasured.Theresultsshowedthattheapparentabsorptivityofproteinincreasedatfirstandthendecreasedwiththepeptidelevelincreasedandtheregressionequationwasy=-0.0036x+o.4601x+79.037(R=0.9942).Thebestabsorptivityofproteinwas93.738%whentheratioofoligopeptideandFAAwas63.903:36.
7、097.Theabsorptivityofaminoacidofdifferentformwasdistinguishing.TheabsorptivityofThr,Ser,Gly,PheandLyswithpeptideformwassignificantlyhigherthanthatoffreeaminoacidformwhiletheGlu,Val,lie,Tyr,HisandCyswaslower(P<0.05).Formostaminoacid(Thr,Ser,Gly,Ala,Phe,Lys,Pro,Arg),theabsorp
8、tivityincreasedatfirstthendecreasedwiththepeptidelevelenhanced.Keywords:freeaminoa
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