Medycyna Wet. 55 (3), 145-212, 1999

REVIEWS

Welfare of animals and criteria of its evaluation Kołacz R., Bodak E. [summary] 147

Coypu (Myocastor coypus) as a potential source of Trichinella spiralis invasion Scheuring W. [summary] 155

The influence of the quantity and quality of semen and insemination techniques on results of pregnancies in cows Jaśkowski J.M.,
Szenfeld J. [summary] 160

Contemporary opinions on the growth and selection of ovarion follicles in ruminants Schwarz T., Zięba D. [summary] 163

The use of some aromatic oils in the control of honey-bee diseases Muszyńska J.: [summary] 167

ORIGINAL PAPERS

The rate of occurrence and level of growth hormones in food products of animal origin Pietrzak-Fiećko R., Smoczyński S.,
Skibniewska K. [summary] 169

Eggshell surface ultrastructure in chicken colibacillosis Malec H., Borzemska W., Niedziółka J. [summary] 172

The epizootic situation of Aujeszky’s disease in Olsztyn province between 1992-1997 Szweda W., Jędryczko R., Pirus T., Siemionek J.,
Platt-Samoraj A. [summary] 176

Antigenic characterization of Polish SVDV isolates Niedbalski W., Kęsy A., Brocchi E., Borrego B., Malicki K. [summary] 181

Haemolymph lysozyme activity in worker bees (Apis mellifera) in colonies infested by Varroa jacobsoni and exposed to levamisole Sokół R. [summary] 185

The effect of Neguvon on phagocytic capacity and number of thrombocytes in carp Stosik M., Deptuła W., Sobczak E.: [summary] 188

Histological evaluation of the periapical tissues in single-rooted teeth after root canal treatment Gawor J. [summary] 191

Synthesis of Vitamin C in turkeys Nagórna-Stasiak B., Lechowski J., Kowalczyk M.: [summary] 195

The effect of smoking and selected functional additives on nitrozamine contents in pork Rywotycki R. [summary] 199

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