Cows: More freedom may mean less milk

'Free-stall,' untied cattle in small herds produce less milk than cows tied to their stalls but have a higher reproductive performance and suffer less teat injuries and metabolic diseases. Researchers writing in BioMed Central's open access journal Acta Veterinaria Scandinavica compared performance and health within the two stall types in response to a ban on the construction of new tie-stalls...

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