In this investigation, it was studied on 50 neonatal calves with ' diarrhea. As soon as the calves arrived to clinic the blood samples were taken from the jugular vein in order to determine the following blood parameters: packet cell volume (hematocrit %), leukocyte number, differential leukocyte count %, sedimentation rate, serum urea, Ma, K, Inorganic P and total protein.

Especially, the increase in PCV (Hematocrit %). leukocyte number and serum urea were much pronounced in the blood of calves.

To decide about prognosis and the treatment of the calves, these measure-rements are taken into consideration. The analysis of these blood parameters was carried out before the treatment and during the treatment period.

The treatment of animals consisted of subcutaneous infusion of a isolayt -solution mixed with hyaluornidaes (50—150 ml isolayt + 15—45 I.U. hya-luronidase per kg of body weight). On the other hand, the application of the effective antibiotics were administered orally (chloramphenicol; 30 mgjkg). and intramuscular (Gentamycine ; 5 mg) kg) based on the results of an antibi-ogram carried out on facces.

Three calves died but the other 47 calves were returned to their health.