accurate estimates of their associated effects on animal performance are needed .
This study aimed to quantify the variation in individual test - day milk yield and somatic cell count , risk of reproductive failure after first service of dairy cows , and risk of death of calves and heifers according to the BCV and BRSV status of the herd .
To assess the economic impact of bovine coronavirus ( BCV ) and bovine respiratory syncytial virus ( BRSV ) infections , accurate estimates of their associated effects on animal performance are needed .
This study aimed to quantify the variation in individual test - day milk yield and somatic cell count , risk of reproductive failure after first service of dairy cows , and risk of death of calves and heifers according to the BCV and BRSV status of the herd .