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1、狗狗饲养优生篇（DogbreedingEugenics）Whenisagooddogsuitableformating?Thematingperiodofafemaledogisusually8to10monthsafterbirth,andthemaledogisbornabouttwooroneyearandonemonthmonthsafterbirth.Thereareexceptions,suchasthemaledogafterbirthfortwoyears,thefemaleisfullayearandahalfaftermatingaswell.Malesmat
2、e2to3monthslaterthanfemales.SaintBernardandDanishshepherdtocompletelybecomeabigdog,beforeenteringthematingperiod.Buttherearealsooccasionally,thedogsuddenlyranoutofthekenneldidnotreturn,andsoreturnedto1age,pregnancy,femaledogs,shouldpayspecialattentiontotheobservation.Malesmatureaftermating,wi
3、ththeirreproductiveabilitytoreproduce,butestrusisirregular.Thematingperiodofthefemaledogis8to12monthsafterbirth,followedbyregularestrouscyclesevery5monthsor6months.Femaledogsmatingisthemostappropriatefemaledogpussybegantoappearlightbloodofthesecretionofafewdayslater,afterthebeginningofthe10to
4、15daysofmenstruationformatingtime,thefemalereproductiveorganswillovulationindogs.Enthusiasmisthebesttimeformating..Theseconddayofovulationistheeasiesttoconceive.Afterovulation,thefemaledogdoesnotallowthemaledogtoapproach.Afterovulationperiodwillcontinuebleedingforabout1weeks.Ingeneral,healthy
5、femaledogsbecomeestrousevery5to6months,sofemalescanmatetwotimesayear,butthetotalmatingtimeisabout10days.Matingcantakecompoundmethodisthefirstday,aftermating,every1days,referstopurepanic?Remating,matingcompletedin3.Thismethodnotonlycombinesthephysiologicalcharacteristicsofthefemaledogduringthe
6、periodofbirth,butalsobenefitstherestofthemaleandfemaledogsandensuresahighconceptionrate.Inaddition,thematurefemaledogsmatingselectioninsecondoestrusisgood,canavoiddystociaandpoorhealthtofeedingthepuppysituation.Thebestreproductiveageofmaleandfemaledogsisbetween3and5yearsold.After6yearsofage,t
7、heyentermenopause,andtherateofconceptionislow,andthefemaledogswhoarenotbornaresusceptibletobreastcancer.ThebreedingmodeofeugenicsdogThepurposeofreproductionistoextendtheoffspring,andmoreimportantly,toeffectivelybreedthecharacteristicsofvariou
