australianbetterbreedingcapitalisationclimateconditionscostsdairyupdecisiondryeconomicsemissionsfarmfarmersfarmsfeedfertiliserheiferherdhighimpactsinsightsintensivemakingmanagementmanagingmilkmonitornswoutlookpastureperformancepricepricingprofitabilityprofitableraisingrevisitingrisksilagesupplytimetimestocalwetyearyears