专业英语1专题省名师优质课赛课获奖课件市赛课一等奖课件.ppt

AnimalScienceinEnglish1.IntroductionLivestockindustry畜牧业Livestockproduction畜牧生产Livestockproducer养畜者，畜牧经营者Livestockfarm畜牧场Livestockmanagement家畜管理Thesameistrueinthefeedindustry（饲料工业）whereelectroniccalculatorsandautomaticblending（匀浆、混合）equipmentarereplacingthepencilandscoopshovel（勺子、铲子）.Feed,foodstuff,feedstuff,feedingstuff饲料Feedindustry饲料工业Feedformula饲料配方Feedformulation饲料配合Feedprocessing饲料加工Feedproduction饲料生产Inthemeatindustry(肉品业)assembly-line(组装流水线)smokingofbaconwithelectricallychargedsmokeparticlesisbeingtried.Meatispreservedbyrefrigeration,irradiation(辐射),andantibiotics(抗生素),ratherthaninsaltbarrels(桶)。Similardevelopmentsinallphasesoftheanimalindustry(畜牧业)haveputthespotlightonscience.Menwhoworkwithlivestockarebecomingmoreobjective.Thoughmostcontinuetohaveanintensefeelingforlivestockandthelivestockindustry,thedesireforprofitclearlyexists.Farmanimals(家畜)aremeat,wool,andmilkproducingfactories.Profit-mindedgrowersandfeedersmustknowtheirfactory－whatitconsistsof,howitworks,whatfactorsinfluenceit,whatcanitrunefficiently－andtheymustbeconsciousofproductquality.Peoplelearnedtoutilizeanimalsveryearlyinhistory.Manyprimitivetribeshuntedwildanimalsforfood.Theyalsolearnedtomakeclothingandshelterfromanimalhides,andusedthebonesandtuskstomaketools,weapons,andornaments.Ascenturiespassed,variouscivilizationsrealizedthathuntingwasanundependablemeansofobtainingfood.Animalherdsroamedovervastterritories,makinggamesparse.Droughtordiseasecouldsharplyreducethepopulationofsomespecies.Huntingbecamedangerousiftheanimalbeingchaseddecidedtoattackitspursuers.Domesticationofanimalsbeganveryearlyincertainpartsoftheworld.CattleraisingbeganinsouthwesternAsiaby5000B.C.Althoughmostoftenutilizedformeat,cattlealsoprovidedmilkandhides,andservedasbeastsofburden(驮畜).Domestication驯化，驯养Domesticanimal家畜Domesticlivestock家畜Domesticsheep绵羊，家绵羊Horsesweredomesticatedby3500B.C.inthePersianGulfarea,andwereusedmostlyasmeansastransportation.Laterimportantspeciesincludedsheep,swine,goatsandfowls.Themostcommonuseofdomestic