Generally the veterinarian that services farm animals will come out to your farm, there are exceptions such as university clinics where a farm animal may be taken in at the request of the vet for additional tests, treatment or study.
Constipation. Get a veterinarian out ASAP.
The two differential diagnoses that come to mind are calf diptheria or chronic pneumonia. However, your veterinarian will have to take a look at the calf to see what may be going on.
It's possible they have a respiratory illness. Consult your veterinarian about this.
Please go see your veterinarian for a proper diagnosis and to determine what--let alone IF--antibiotics need to be administered to a sick calf. Chances are the calf does not need antibiotics at all, just electrolytes if it's scouring, a deworming product if it has worms, or an injection of a certain mineral if the calf is deficient in certain minerals.
An abscess in the jaw or mouth, rabies infection, wooden tongue, eating something that is poisonous, etc. Please see your veterinarian about this.
This is a question for a veterinarian. There are many drugs available.
Check with a veterinarian. It could be joint ill or an abscess that needs to be treated.
Depends on the medicine and what sort of illness your cow is inflicted with. See your veterinarian on a proper diagnosis of your cow and for the proper medicine needed to administer.
I have a burning sensation in the calf. I can see the calf from here.
That is something you may have to see your veterinarian about. It could be anything: a pinched nerve, nutrient deficiency, etc.
It is highly recommended to get in contact with a veterinarian about this immediately otherwise you may soon have a dead calf on your hands.
There's not much you can do, really. Reaching for the apple may just push it farther down its throat. You would be best to get your veterinarian as soon as possible to see what can be done to save the animal.