Archivum veterinarium Polonicum最新文献

The effect of an organophosphorus pesticide-phosalone on some parameters of humoral and cellular immunologic response in mice was investigated. Haematological and morphological examinations were made parallelly. It was found that immunotropic effect of phosalone was a reversible process.

The effect of chronic coumestrol treatment on insulin level and insulin sensitivity was examined in female rabbits. The phytooestrogen was injected subcutaneously at a dose of 1 mg/day for 10 days. The decreased blood insulin level was observed after coumestrol treatment. Simultaneously phytooestrogen altered the insulin binding but the response of liver and erythrocytes was not identical. The maximal binding of receptor sites was diminished in both tissues. However its effect was more pronounced within the high affinity insulin receptor in the liver while, in erythrocytes, statistically significant changes were observed within the low affinity insulin receptors. These results suggest that although coumestrol alters the insulin binding in female rats, the response of different tissues should be analyzed separately.

Observations carried out on 43 brains of raccoon dogs show that the system of basilar arteries of the brain is similar to that in other carnivores. The observed differences were manifested in different vessel connections and occurrence of some variations. In 53.4% cases the basilar artery in raccoon dogs develops from the combination of the even ventral spinal arteries and the vertebral arteries entering them. An unusual case of the reduction of spinal artery was also found.

The research aimed at defining local changes in the healthy prostatic gland after the procedure of cryodestruction. In 15 dogs the gland was frozen unifocally in the double cycle from the outside using the flat applicator. At different times over the period of 6 months after the cryodestruction procedure particular dogs were subjected to surgery in order to determine macro- and microscopic changes. Coagulative necrosis with the subsequent formation of the connective tissue scar was observed in the frozen tissues. Two weeks after the cryosurgery regenerative processes of the normal prostatic gland were noted. From the tenth day until 6 months after the procedure the size of the gland in the investigated dogs decreased by about 45%. The appearance of cavities in the lobes of the gland may, be a complication after the overfreezing of the urethra.

Considerable increase (average 70%) of rabies cases in animals on Lower Silesia, occurred in second half of the decade 1983-1992. Foxes were a reservoir of the virus and epizootic spread of the disease had been noted among them. In other animal species, both wildlife and domestic, only sporadic outbreaks were noted. They were a consequence of contact of these animals with infected foxes, in which from 85% to 90% incidences a year were stated. Parallel rise of rabies cases in cats makes this animal the most important potential vector of the disease to man.

The attempt at elimination of keratoconjunctivitis infectiosa bovis (IBK) was undertaken on Wolin island by active immunization. The clinical and zootechnical estimation of effectiveness of immunization with vaccine prepared on the basis of local, fimbrial strains of Moraxella bovis has been done. The immunization of large group of animals was done. Aerogenic immunization proved to be the most effective.

In the present investigation a lighter white egg-type (L) and a heavier wild meat-type (M) of female Japanese quails were compared with respect to egg production, body growth, abdominal fat pad, serum thyroxine (T4) and triiodothyronine (T3) concentrations, TRH sensitivity and T4 5'-monodeiodinase activity in liver homogenates. During the investigation period L type layed considerably more eggs and M type was heavier in body weight. Abdominal fat pad in L type quails was significantly higher than in M type ones. L type quails had lower serum T4 and T3 concentrations than M type ones and the liver T4 5'-monodeiodinase activity was higher in M type than in L type quails. Following TRH administration serum T4 and T3 concentrations increase was higher in L type quails than in M type ones. Our results suggest that lower T4 and T3 observed in L type quails reflect a possible metabolic adaptation to egg production. Different activities of 5'-monodeiodinase and of response to TRH may be inherent to these two types of quail.

Physiological properties and proportion of typical features of Pityrosporum pachydermatis were determined on 385 strains from clinical cases of O.E and dermatitis in dogs. Carbohydrates and nitrogen assimilation were determined auxanographically. Urease production and enzyme release were assessed on Christensen's medium and API-ZYM respectively. All strains oxidised carbohydrates in the OF test. 90% assimilation of glucose and production of urease are typical of Pityrosporum, contrary to 100% positive reactions in literature data. Production of acid and alkaline phosphatases, phosphohydrolase, leucin arylamidase, and beta-glucosidase dominated, while lipase C14, esterase-lipase C8, esterase C14 and alpha-galactosidase were variable.

Infectious Bovine Keratoconjunctivitis (IBK) is one of diseases of a very complex etiology constituting a serious epizootiologic and economic problem in cattle raising on a large scale. The primary and most pathogenic etiological factor is Gram negative Moraxella bovis bacteria. The present work was undertaken to compare the efficiency of different systems of vaccination and determine their influence on forming the profile of different types of immunity.

For food evaluation, the determination of the number of Staphylococcus aureus colonies is insufficient in the view of present scientific knowledge. The results, advantages and disadvantages of diagnostic methods are demonstrated on an example of three methods of detection of staphylococcal enterotoxins in milk and milk products. 133 strains were investigated with the method of biotyping of Staphylococcus aureus strains. Four of their strains were included in biotype A, seven strains of S. aureus were not included in any biotype and the other strains belonged in biotypes C and E. This method can be used as an auxiliary method for evaluation of foods containing S. aureus bacteria. The agar-gel precipitation method of enterotoxin detection in isolated strains of Staphylococcus aureus has just restricted valiability. When examining 96 strains of S. aureus with this method, strains which were producing staphylococcal enterotoxins were isolated 17 times. The main disadvantage of this method is a fact that the result concerning the isolated strains need not be identical with the result of enterotoxin detection in food. Direct assays of staphylococcal enterotoxins in milk and milk products using an enzymoimmunological method (ELISA test) seem to be most promising, mainly due to their high sensitivity (0.0001-0.001 micrograms.ml-1) and other advantages.