Zero grazing dairy systems confine cattle year-round without pasture access, creating significant behavioral welfare deficits that require enhanced management attention to partially compensate.
Zero grazing systems impose permanent behavioral restrictions on animals evolved for extensive movement and grazing. Cattle in zero grazing systems never experience the natural behaviors of choosing where to graze, moving freely across varied terrain, or seeking shade under trees. Research using animal-based welfare measures consistently identifies behavioral welfare deficits in zero grazing compared to pasture access. The welfare case for zero grazing requires exceptional compensatory management - maximum lying comfort, ample space, social freedom, and enrichment to partially substitute for denied natural behaviors. Many zero grazing systems fall short of this compensatory standard.