In addition to Jasons comments, the cows he is bred to will also contribute towards the birth weight and their nutritional also.
> A bull's own birth weight will not
> always give an accurate indication
> of how big his own calves will be.
> Factors like how his dam was fed,
> exercise, and weather can
> influence his own birth weight.
> An epd if available is said to be
> 9 times more accurate for
> determining the birth weight of
> his offspring. To start with, his
> own weight will be used to help
> generate the bw epd, so to say an
> actual bw has no bearing would be
> With all that being said,
> basically the only positive way to
> know how big a bull's calves will
> be, is to use him.
> Jason Trowbridge Southern Angus
> Farms Alberta Canada