Dairy cows need to lie for 10-14 hours per day. Lying serves multiple physiological functions: rumination (approximately 50% occurs while lying), blood flow to the udder (increased by 30% when lying), rest and recovery, and thermal regulation. Cows deprived of adequate lying time show elevated cortisol, impaired immune function, increased lameness, and reduced milk production.
Cubicle (free stall) design is one of the most critical factors determining cow comfort. Key dimensions for Holstein cows:
Bedding quality significantly affects resting behaviour. Cows on deep-bedded systems (sand, sawdust, straw) spend 1-2 more hours lying per day than cows on thin mattresses. Sand bedding offers excellent traction, cushioning, and reduced mastitis risk, but creates slurry management challenges. Deep-straw yards provide excellent welfare outcomes but require high straw inputs and good ventilation management.
Concrete flooring — especially slatted concrete — is associated with high lameness prevalence. Cows on concrete spend less time standing, have more hoof disorders, and show more reluctance to move. Rubber flooring (passageways and in front of feeding areas) significantly reduces lameness risk: meta-analysis data shows 15-25% lameness reduction on rubber-floored passageways compared to concrete. Optimal passage width (3-4 metres) allows cows to pass without contact.
Overstocking cubicles (more than 1 cow per cubicle) reduces lying time, increases time cows spend standing on concrete, and elevates lameness. Industry recommendation: maximum 95% stocking density. Pre-fresh cows (3 weeks pre-calving) are particularly sensitive to overstocking and should have access to additional lying space.