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1、西北农业学报2007,16(4):55～58ActaAgriculturaeBoreali-occidentalisSinica＊利木赞牛与中国西部2个黄牛群体杂交效果分析11,3＊12＊1杨晓冰,陈宏,滑留帅,杨奇,刘波(1.西北农林科技大学动物科技学院,陕西省农业分子生物学重点实验室,陕西杨凌712100;2.宁夏固原市农牧局,宁夏固原756000;3.徐州师范大学细胞与分子生物学研究所,徐州221116)摘要:从利木赞牛的品种特性入手,在中国西部两个黄牛群体(秦川牛和固原牛)引进利木赞牛进行黄牛
2、改良的过程中,通过体尺测定试验(秦川牛、固原牛及其利杂牛)得知杂交牛各项体尺指标和体重均得到明显改善(P<0.01或P<0.05),尤其杂交牛的肉用指数(BPI)均得到极显著的提高(P<0.01),表明两个黄牛群体在肉用性能改进方面收到了良好的效果,固原牛提高的程度比秦川牛更加明显;通过育肥屠宰试验(固原牛及其利杂牛)得知利木赞杂交牛平均日增重比固原牛增加20%,屠宰率和眼肌面积分别提高了8.58%和27.62%,充分显示了利木赞牛杂交带来的优势。关键词:利木赞牛;杂交改良;中国西部中图分类号:S82
3、3文献标识码:A文章编号:1004-1389(2007)04-0055-04EffectsAnalysisofTwoCattlePupolationsintheWestofChinaCrossedbyLimousinCattle11,3＊12＊1YANGXiao-bing,CHENHong,HUALiu-shuai,YANGQiandLIUBo(1.CollegeofAnimalScienceandTechnology,NorthwestA&FUniversity,ShaanxiKeyLaborato
4、ryofMolecularBiologyforAgriculture,YanglingShaanxi712100,China;2.AgricultureandStockbreedingOfficeofGuyuanCity,GuyuanNingxia756000,China;3.InstituteofCellularandMolecularBiology,XuzhouNormalUniversity,XuzhouJiangsu221116,China)Abstract:Limousincattlewer
5、efetchedinthewestofChinatomelioratetwocattlepopulations(Qin-chuancattleandGuyuancattle).Twoexperimentswereconductedtostudytheperformanceoftwocattlepopulationsandtheircrossbredpopulations.Theresultsindicatedthatthecrossbredpopula-tionswereimprovedingrowt
6、hindexesandbodyweight(P<0.01orP<0.05).EspeciallytheBPI(BeefPurposeIndex)ofthecrossbredpopulationswasimprovedsignificantly(P<0.01).Thisex-perimentconcludedthatthetwocattlepopulationsgotniceeffectswhentheywereintercrossed,andtheGuyuancattlegotmoreincrease
7、sthanQinchuancattle.Theaveragedailygainofthecrossedcat-tlepopulationwas20%higherthanthatofGuyuancattle.Thebeevespercentageandeyemuscleareaofthecrossedcattlewereincreasedby8.588%and27.62%comparedwithGuyuancattle.Inconclu-sion,Limousincattlebringadvantage
8、toChinesecattlepopulations.Keywords:Limousincattle;Crossedimprovement;ThewestofChina利木赞牛起源于法国中部上维埃纳省利木赞向世界各地,法国国立农牧研究院养牛技术学院高原,并由此得名。20世纪80年代初,利木赞群等官方机构联合成立了利木赞未来协会(ALA),[1]体饲养规模已达150万头,为把这个优良品种推并制定了一系列的培育计划和发展纲要。相比＊收稿日期:2006-12-
