A newborn will not eat any feed. Calves won't begin eating feed until they're at least a week old. Otherwise, you really need to feed colostrum to a newborn for the first 12 to 24 hours, then gradually switch over to milk replacer. You can introduce feed to a calf early, but don't expect it to eat it all like a mature cow will, because a calf is pretty much like a human in that it is more of a monogastric than a ruminant. This means that a calf needs to rely much more on milk than feed for the first few weeks of its life.
Cereal grain is the best to feed a calf. This includes corn, oats, barley and rye.
This all depends on the breed. Three-month-old calves of different breeding will weigh more or less than the other. For instance, a Charolais calf will weigh more than a Jersey calf, or a miniature Angus calf will weigh less than an Angus calf (one that is normal in size and proportion).
Disease or a blockage in the gut will cause a calf to stop eating. This is something you need to take up with your local large animal veterinarian immediately if you wish to have a hope of saving the calf.
A 3-5 month old calf typically weighs between 150-300 pounds, depending on the breed and gender of the calf.
That all depends on what breed that beef calf is. A 1 month old beef calf can weigh anywhere from 80 lbs to over 200 lbs or more.
A 12 month old child should be OK eating any of the commercially available fish in the Supermarkets and Fishmongers.
I have no clue. Maybe you should take it to the vet.
Depends on the breed and sex of the calf. Most calves average around 700 to 800 lbs at this age, plus or minus.
6 months...
On average, a 3-month-old Angus calf weighs around 300-400 pounds. However, individual calf weights can vary depending on factors such as genetics, nutrition, and overall health.
That depends on the breed. Since this is in the Jersey cattle category, the weight of a three-month old Jersey calf would be around 150 to 200 lbs at the most.
Depends on the breed and body condition of the calf. A 600 lb Jersey calf can be around 7 to 8 months old, whereas a 600 lb miniature calf may not be a calf at all, but a 15 month old heifer or bull. A soggy Angus calf at 600 lbs may be at around 5 to 6 months of age.