Comparison of feeding urea-treated teff and barley straw based diets with hay based diet to crossbred dairy cows on feed intake, milk yield, milk composition and economic benefits

摘要

SixcrossbredBoranxFriesianmilkingcowswereusedinadoubleLatinsquaredesigntostudyifurea-treatedteffstraworurea-treatedbarleystrawcanreplacehayinthedietofdairycows.Feedintake,milkyield,milkcompositionandeconomicvariableswereusedfortheevaluation.Asaresultofureatreatment,crudeprotein(CP)contentofteffandbarleystrawsincreasedby134%and85%respectivelyandinvitroorganicmatterdigestibilityby7.4%and28%,respectively.Neutraldetergentfibreandhemicellulosecontentofteffandbarleystrawswasreduced,whileaciddetergentfibreandligninincreased.Therewasnosignificantdifferenceinmilkyieldormilkcompositionduetotheexperimentaldiets.Thedietwithureatreatedteffstrawgavethehighestdailynetreturn.Ureatreatmentincreasedthenutritivevalueofteffandbarleystrawandtheseroughagescanreplacehayinthedietofdairycowswithnolossofnbsp;milkyieldorchangeincomposition..