Primipara in contrast to multipara had fever more frequently , higher rates of subclinical ketosis p. p. , metritis and lameness , higher numbers of sick cows in the first 30 DIM , higher rates of stillbirths and dystocia , showed impaired involution of the uterus on day 10 p. p. , fewer animals were cyclic during week 5 p. p. and less animals were culled ( p < 0.05 ) .