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Ages at calving and calving intervals for dairy cattle in the United States


Journal of Dairy Science 72(3): 685-692
Ages at calving and calving intervals for dairy cattle in the United States
Calving age and interval for cows first calving in 1966-86 were examined for 5 dairy cattle breeds. For parities 1-7, mean age at each parity was lowest for Jerseys and highest for Ayrshires and Brown Swiss (BS). Registered cows were usually older than grade cattle for a specific parity.

Accession: 001748351

DOI: 10.3168/jds.S0022-0302(89)79160-8

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