資源描述：
《牛場飼料供應(yīng)計(jì)劃》由會員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在工程資料-天天文庫。
1、PlanningtheDairyFeedSupplyTimothyR.Johnson,Ph.D.PurdueDairySpecialistWithsofteningpricesformilkandhighpurchasedfeedcosts,dairyproducersarestrivingtofinetunetheirfeedingprogramstomaximizeprofitability.Goodcowscanstillmakemoneyiftheyarecomfortable,wellmanaged,andcostsarecontrolled.Therearetwom
2、ajorareasthatneedspecialattentioninplanningforfeedsupplyneedsthisyear:1)howtofeedcowsonashortforagesupply;and2)howtocopewiththerelativelyhighcostofpurchasedforageandenergyfeeds.ShortForageSuppliesWeatherconditionsandtemperaturesduringpeakgrowthandharvestperiodsinspringandsummeroftenresultind
3、elayedharvest,low-qualityforage,andinlowyieldsofhayandhaycropsilage?Undertheseconditions,itisachallengetoproducersandnutritioniststocarefullyplanwinterfeedingprogramsandtobudgetfeedsupplies.Todealwiththischallenge,dairymenmayincreasecornsilagefeeding,purchasehay,andattempttodecreasetheamount
4、ofhayandsilageneededbysubstitutinghighfiberby-productfeedsforforage.Matchingexpectedfeedneedsandinventoriesisessentialtofindingtherightcombinationofthesemethods,andtobudgetingfeedcosts.Asanexample,feedingmorecornsilagereducestheamountofhayrequired.Itcanhelpminimizethepurchaseofcom,butrequire
5、sthatmoreproteinsupplementbefedascornsilagereplaceshayinthefeedmix.Italsorequiresthatadequateamountsofcornsilageareavailabletoextendtherationthroughthesummer.WorkattheUSDADairyForageResearchCenter,Madison,Wisconsinhasshownthatcornsilagecansupporthighfeedintakeandmaintaingoodproductionthrough
6、thefulllactation.IntheWiseonsinstudy,rationswith0%,33%,or66%cornsilagewerefedwiththerestoftheforagedrymattercomingfromgoodqualityalfalfasilage?Thegrainportionoftherationswasmadeupofhighmoistureearcorn,soybeanmeal,porcinemeatandbonemeal,androastedsoybeans.Increasingamountsofproteinsupplementw
7、ereneededtobalaneetherationsasmorecornsilagewasadded?Cowsfedtwo-thirdscomsilagemaintainedsimilarfeedintakeandmilkproductiontothosefedone-thirdcornsilage.Inadditiontheyhadgreaterfeedintakeandmilkproteinyieldthanthosecowsfeedalltheforagedrymatterasal
