1_21日龄肉鸡色氨酸适宜水平研究

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1、2014୍36ज22௹ChinaPoultryVol.36đNo.22.2014ൌဒ࿹࣮◎◎඼ਘႏအ◎◎1~21ರਭಽ࠙೤μූൡၒඣ௜࿹࣮*11121**1຦ѯđᚉᆤᇆđ৙ཫૹđ৙౩ᄉđჯࡹૹđᔋႿૼč1.ᇏݓ୪ြն࿐׮໾॓࠯࿐ჽ׮໾ႏအ࿐ݓࡅᇗൌဒ൩đКࣘ100193Ġ2.Кࣘ޿׻ಽ࠙܄ඳđКࣘ102211ĎᅋေğЧ࿹࣮ᆻᄝ௟ק඼່॒৬ਘ1~21ರਭຩഈ௜အಽ࠙೤μූླေਈb࿊Ⴈ1ರਭ+AAഅ௖սಽ࠙Չaྦ۲2500ᆺđٳљෛࠏٳӮ5۱ԩ৘ቆđૄ۱ԩ৘5۱ᇗگb඼່ზ૜-׸௨-ૣ௨-ზ૜Ϣٳ௜ඣҩൌූμ೤ਁ඼৘ԩ۲൐ූμ೤-Lࡆเđਁ඼Ԥࠎ྘ٸљູ0.176%a0.203%

2、a0.220%a0.241%ބ0.281%đҩק1~21ರਭಽ࠙ളӁྟିbࢲݔğರਁ೤μූඣ௜ބಽ࠙ྟљؓಽ࠙ളӁྟିऎႵཁᇷ႕ཙčP<0.05Ďb೤μූඣ௜აྦྟಽ࠙ਘᇗбӯགྷཁᇷڵཌྷܱčP<0.05Ďđაྦྟಽ࠙ҐൊਈބᄹᇗӯགྷՑ౷ཌܱ༢čP<0.05ĎĠ೤μූඣ௜აՉྟಽ࠙ҐൊਈބᄹᇗӯགྷՑ౷ཌܱ༢čP<0.05Ďbࢲંğ඼່॒৬ਘ౏௜အ౦ঃ༯đ1~21ರਭྦaՉྟಽ࠙ሹ೤μූླေਈۚႿಽ࠙ტᇕ܄ඳ๷ࡩਈbܱ࡯Սğಽ࠙Ġ೤μූĠླေਈTryptophanRequirementofBroilersFedCrumble-pellet*Dietat1to21DaysofAge

3、11121**1WANGBođMINZhizhiđLIXiaominđLIQingyunđYUANJianminđGUOYumingč1.StateKeyLaboratoryofAnimalNutritionđCollegeofAnimalScienceandTechnologyđBeijing100193Ġ2.BeijingHuaduBroilerCompanyđBeijing102211ĎAbstractğThisstudywasconductedtodeterminetryptophanrequirementofbroilersatfedbycrumble-pellet

4、dietrearedonplasticslattedfloors.25001-day-oldAA+maleand2500AA+femalebroilerswererandomlyallocatedinto5groupsč5replicatesđ50chickensforeachreplicateĎ.Corn-Soybeanmeal-Cornglutenmealdietsčcrumble-PelletFeedĎcontaining0.176%đ0.203%đ0.220%đ0.241%and0.281%Trpconsistingof0.176%basisTrpandadditio

5、nalCrystalL-Trpwereprovided.Growthperformancesofbroilersweredetermined.TheresultsshowedthatdietaryTrplevelssignificantlyaffectedtheperformancesčP<0.05Ď.MalefeedconversionwasnegativelywhilemalefeedintakewasquadraticallycorrelatedtoTrplevelsčP<0.05Ďđandfemalebodyweightgainandfeedintakewasquad

6、raticallycorrelatedtoTrplevelsčP<0.05Ďalso.ThecurrentstudysuggestedthattheTrprequirementofbroilersfedbypelletfeedshouldbehigherthanthelevelrecommendedbythebroilerbreedercompany.KeywordsğbroilerĠtryptophanĠrequirement൬۠ರ௹ğ2014-09-01ྩ߭ರ௹ğ2014-11-08∗ࠎࣁཛଢğགྷս୪ြӁြ࠯ඌุ༢Кࣘ൧ࡅౚԷྍ๶ؒ∗∗๙࿟ቔᆀđE-mailğyuanjm

7、@cau.edu.cn-24-2014୍36ज22௹ChinaPoultryVol.36đNo.22.2014ൌဒ࿹࣮೤μූ൞ކӮնଷᇏ5-᳅೤ςཋ෎໾đі1඼ਁቆӮࠣႏအඣ௜čڄۄࠎԤĎ%႕ཙଷބപࣜ༢๤ᇏപࣜ־ᇉԮ־ۿିb೤μ೤μූഡ࠹ඣ௜ཛଢ0.1760.2010.2250.2500.274ූԢҕაކӮϢᇉຓđߎҕაט॥ᆫোބϢზ૜60.10060.10060.10060.10060.100ŀ1łᇉս྆đऎႵࢆಽ࠙ބ࠙ۉᄣሹᆫٛݣਈზ૜Ϣٸ13.87013.87013.87013.87013.87