A significant reduction in milk yield was observed for cows in presumably BRSV recently infected herds , as well as in herds having a presumably BRSV - related clinical outbreak
The risk of failure after first service , as well as the risk of death in calf and heifer , was numerically higher in BRSV - infected herds ,
A significant reduction in milk yield was observed for cows in presumably BRSV recently infected herds , as well as in herds having a presumably BRSV - related clinical outbreak ( of 0.57 and 0.91 kg / d , respectively ) , compared with cows in presumably infection - free herds .
The risk of failure after first service , as well as the risk of death in calf and heifer , was numerically higher in BRSV - infected herds , although this was not statistically significant .