Performance of crossbred lactating dairy cows on pasture-based system during the dry-water transition season

摘要

Theobjectivewastoevaluatedtheintakeandapparentdigestibilityofnutrientsandmilkproductionofcrossbredlactatingdairycowsonpasture-basedsystemduringthedry-watertransitionseason.Eightcrossbredcows(Gyr/Holstein/BrownSwiss)withanaveragemilkproductionof15kg/dayandanaverageliveweightof500kg,weredistributedintwolatinsquares.Theexperimentalperiodlasted60days(fourperiods,each15days).Foursupplytreatmentswerestudy:cornsilage+concentrate;spinilesscactus+concentrate;cornsilage+soybeanmeal,andspinelesscactus+soybeanmeal.ThepastureareawithBrachiariadecumbensStapfpredomination.Cornsilageassupplyperformslikeaddictiveeffectonpasturenutrients,ontheotherhandspinelesscactusassupplyperformslikesubstitutiveeffect.Theapparentdigestibilityoftheneutraldetergentfiberandnon-fibercarbohydratedifferfromtheuseofforagecactusorcornsilage.Theuseofthesuppliescontainingconcentrateelevatesthemilkproduction.