[Survey about the motivation for the study of veterinary medicine in Croatia]. / Erhebungen über die Motivation zum Studium der Veterinärmedizin in Kroatien.

The aim of this work was to find out the factors which determine the motivation of students for the veterinary school. The sociologically relevant circumstances, specific for Croatia--as a post-socialistic country--which might influence the motivation of students are presented in the work. The results showed that 89,4% students chose this study by themselves, 62.3% did not have any known veterinarian as a paragon, 44% were familiar with the contents of the veterinary profession. 97,8% are aware of the poor financial condition of the veterinarians, and the majority is aware of the bad reputation of this profession in Croatia. It was concluded that under these circumstances the candidates for the veterinary profession are motivated through direct affection to the profession and the love to animals.

Leukocyte alkaline phosphatase and serum gamma-glutamil transferase activities in horses used for production of hyper immune sera.

The activities of leukocyte alkaline phosphatase (l-AP) and serum gamma-glutamil transferase (gamma-GT), and total leukocyte counts were determined in horses submitted to the production of hyper immune sera against tetanus (Clostridium tetani). The purpose of this work was to investigate the prospective changes of mentioned parameters in horses under the described circumstances. In addition, the suitability of these parameters in assessing the health condition of the same horses had to be evaluated. The average total leukocyte count increased in one month from the values considered as physiological (8.8 x 10(9)/L, Schalm et al. 1975) to the value of 12 x 10(9)/L and remained at this level up to the end of the trial. The I-AP activities fell after 30 days of the trial for 100 units, and showed permanent slight decreasing tendency thereafter. On the contrary, the serum gamma-GT activity was increasing gradually throughout the whole trial. The results indicate the possibility of reflecting the dynamics of intensified leukocyte metabolism in the course of its function within the chronic inflammation, and development of accompanying pathological changes in the liver. In addition, the initialisation period of pathological changes in the organism of horses in experiment could be between the fourth and sixth month following exposure to antigen.

[The effect of the duration of methoxyethylmercury acetate exposure on the lymphocytes in the peripheral blood of carp (Cyprinus carpio L.)]. / Der Einfluss der Dauer der Methoxyethylquecksilberazetatexposition auf die Lymphozyten im peripheren Blut des Karpfens (Cyprinus carpio L.).

The purpose of this work was to study possible hematological changes in carp (Cyprinus carpio L.) which might be induced by the experimental poisoning with metoxyethylmercury acetate which is used as fungicide. The experimental group of fishes was exposed to the named substance which was mixed with the feed during three weeks. The total lymphocytes number decreased in experimental group already at 7th day (p < 0.01), and remained almost at the same level, but considerably lower than the experimental group, until the end of the experiment. The number of small lymphocytes in the experimental group decreased also at the 7th day of the experiment (p < 0.01), and the decreasing tendency continued up to the end of the experiment. The number of large lymphocytes increased at the day 7th of the experiment (p < 0.01), and the increasing tendency continued until the end of the experiment. The population of large lymphocytes showed the cytopathological changes in the form of cytoplasmic vacuoles and cytoplasmic shoots. The frequency of these changes increased through the experiments.