Management factors associated with bovine respiratory disease in preweaned calves on California dairies: The BRD 100 study.

ABSTRACT: The objective of this cross-sectional study was to determine how management practices on California dairies may be associated with bovine respiratory disease (BRD) in preweaned calves. A convenience sample of 100 dairies throughout California, providing a study population of 4,636 calves, were visited between May 2014 and April 2016. During each farm visit, in-person interviews with the herd manager or calf caretaker were conducted to collect information about herd demographics, maternity pen, colostrum and calf management, herd vaccinations, and dust abatement. A random sample of preweaned calves was identified and evaluated for the presence of BRD using a standardized tool. A survey-adjusted generalized linear mixed model with a logit link function was fitted with calf as the unit of ana

SUBMITTER: Maier GU 

PROVIDER: S-EPMC7094750 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature