白嗉鸭种质性能研究

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1、辽东白嗉鸭种质性能研究报告史延平罗永成辽东学院动物科学系辽宁丹东118003摘要：辽东白嗉鸭是在北纬44°以南、东经120°—128°的区域内发现的一个具有独特外貌特征和生产性能的地方鸭种资源类群。笔者对该鸭种的种质性能测定结果为：从羽色及蹼色可分为三个亚型，即黑羽白嗉、银灰羽白嗉、金掌白嗉；体形、体重有兼用型的特征，成年公鸭屠宰率84.1%，胸肌率17.6%、腿肌率16.4%。银灰羽和黑羽类群公、母的绝对增重峰值期均出现在8—9周龄（28—33克/周.日）；相对增重率的峰值均出现在4周龄（80.43%—85

2、.38%）；银灰羽类群公、母的初生重及24周龄的体重略高于黑羽类群，但差异不显著(P>0.05)；0—6周龄成活率98.6%，7—24周龄成活率97.8%。开产日龄为184天、核心群入舍母鸭年均产蛋量249±12个、饲养只日年均产蛋量285±16个。普通群入舍母鸭年均产蛋量174.6±18个、饲养只日年均产蛋量186.3±16个；自然交配公、母比例为1：9，受精率为91.32%；该鸭种作为一个地方种质资源，对丰富世界鸭种遗传资源的多样性有着重大意义。关键词：地方鸭种；种质资源；生产性能Areportofthe

3、researchonGermplasmPerformanceofwhitecrawduckintheeastofLiaoningShiYanpingLuoYongcheng(ThedepartmentofanimalscienceLiaodongUniversity,Dandong118003)Abstract:WhitecrawduckintheeastofLiaoning,alocalspecieswithspecialcharacterinappearanceandproductionperforman

4、ce,wasdiscoveredinthesouthoflatitude44degreesnorthandfromlongitude120to128degreeseast.Theresultsofgermplasmperformanceofthisduckspecieswhichwasmeasuredbytheauthorasfollowing:itcanbeclassedintothreesub-sortsfromcoloroffeatherandweb-footed,theyareblackfeather

5、andwhitecrawduck,silvergrayandwhitecrawduckandgoldweb-footedandwhitecrawduck;theshapeandweighthavedual-characteristics.Adultdrake’sslaughterrateis84.1%,pectoralrateis17.6%,thighrateis16.4%.Duckanddrakeofsilvergrayfeatherasthesameasduckanddrakeofblackfeather

6、,theabsolutepeakperiodofweightgainoccurredat8-9weeksofage(28-33g/week.);relativegrowthratepeakoccurredat4weeksofage(80.43%-85.38%);Thesilvergrayandwhitecrawduck’savoirdupoisofbirthand24weekshavegreaterweightthanblackfeathertypes’.Butthedifferenceisn’tremark

7、able(P>0.05).Thesurvivalrateof0-6Weeksis98.6%,thesurvivalrateof7-24weekis97.8%.Theageofbeginlayingis184days,theannualeggproductionofduck-housedofCoregroupis249±12,andtheannualeggproductionofduck-daysis285±16.ToOrdinarygroup,theannualeggproductionofduck-hous

8、edis174.6±18,andtheannualeggproductionofduck-daysis186.3±16.Inexperimentweadoptnaturalmating,andtheratioofmaleandfemalewas1:9,thefertilizationratewas91.32%.WhitecrawduckintheeastofLiaoningasalocalspeci