Medycyna Wet. 55 (6), 349-420, 1999

REVIEWS

Birds as a potential source of human infection by Toxoplasma gondii Rzedzicki J., Boś M. [digitized ] 351

Residues of coccidiostatics in food of animal origin Szprengier-Juszkiewicz T. [digitized ] 356

Lectins (hemaglutinins) and their role in the organisms Truchliński J., Starczynowska R. [digitized ] 362

Genotyping methods for differentiation of pathogenic Escherichia coli strains used in molecular epidemiology Osek J. [digitized ] 367

The probability of viruses being transmitted in cattle by transferring embryos fertilized in vitro Jaśkowski J. M., Zbylut J. [digitized ] 372

ORIGINAL PAPERS

Milk spots caused by Ascaris suum in pigs liver Pyz-Łukasik R., Prost E.K. [digitized ] 375

A serological examination of new variants of IB virus in local layer and broiler flocks Wieliczko A., Mazurkiewicz M., Wiśniewska J. [digitized ] 378

Antibodies for bovine herpesvirus type 1 in dairy cows in Poland Rola J., Żmudziński J.F. [digitized ] 384

The influence of delivery and post-partum disturbances on the results of embryo production in donor cows Jaśkowski J. M., Zbylut J.,
Urbaniak K. [digitized ] 387

The sensitivity to chemotherapeutics of bacteria isolated from calves and piglets with respiratory and digestive tract infections Rypuła K.,
Klimentowski S., Kotowski K., Śmielewska-Łoś E. [digitized ] 391

Serological studies on leptospirosis in sheep Krawczyk M. [digitized ] 397

Use of cow’s colostrum in piglet-rearing as a method of increasing their immunity Zachwieja A., Knecht D. [digitized ] 400

Issue traits of cross-breed fatteners Migdał W., Koziec K., Koczanowski J., Tuz R., Borowiec F., Furgal K., Gardzińska A. [digitized ] 403