El uso de hortalizas en la producción de leche en sistemas sub-urbanos
[摘要] AstudywascarriedouttocomparetwofeedingsystemsforHolsteindairycattlefedonconcentrates,lucernehayandcorncobs,carrotsandbroccoli.Drymattercontentforcarrotsandbroccoliwaslower(8%)thanlucernehayandconcentrates(91%)andcorncobsshowedintermediatevalues(34%).Theproteincontentofbroccoli(leavesandflowers)washigher(31%)thanlucerne(21%),whereasthislattershowedahighfibrecontent(23%).Cowsfedonalucerne/concentratediethadalowerDMintakeandhigherproductionofmilkthanthosefedwithcorncobs,carrotsandbroccoli(20.9kgDM/d,18.0kgmilk/dvs24.6and16.3respectively).Intakeofvegetablesdepressedthefatcontentofthemilk(2.8vs4.6%)andincreasedthepercentageofprotein(5.3vs3.7%)Theinclusionofcorncobs,carrots,andbroccoliasafeedfordairycattleprovedtobeanalternativeresourceformilkproductioninsituationswheremilkisnotpaidforonfatcontent.
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[效力级别] [学科分类] 农业科学（综合）
[关键词] [时效性]
