What is the average birth weight for a calf?

Answer 1

The answer to this question primarily depends on the breed. It's impossible to simply average out any calf's birthweight from any particular breed, because there is a different average for each breed. This goes for crossbreds, as there are thousands of possibilities of creating different crosses, and millions of different birth weight averages, and, to make things even more confuddling, average birth weight depends on a lot of other things besides breeding: the type of feed the cow received in her last trimester of gestation; birth weight average of the sire and the dam; time of year the calf was born; climate the calf was born in; the type of topography the calf was born and the cow is raised in; what kind of stressors the cow was exposed to before the calf was born; the age of the cow (huge differences in birth weight between a heifer's calf and a 9-year old cow's calf); the list goes on.

But you still want an average eh? Okay, the average birthweight for a calf is between 70 and 100 lbs. Some calves may be lighter, like around 40 to 50 lbs, again, as mentioned above, depending on the breed. Small breeds like Jerseys have small calves, and large breeds like Chianinas tend to have large calves. Calves grow relatively quickly, and can gain 100 lbs over one month, again depending on their breeding.
when a calf is born, the average weight is somewhere around 80 lbs, but it depends on the breed. 100 lbs and up is usually considered a big calf, 70 lbs and under is quite small.
Cows are not newborn, calves are. Cows are mature female bovines. The birth weight of a calf depends on breed and the genetics of its dam and sire. See related question below.

Answer 2

The average birth weight for a calf is around 55-100 pounds, but this can vary depending on the breed of the calf and other factors such as genetics and nutrition.