Veterinární medicína, 2006 (vol. 51), issue 7
Cell wall deficient forms of mycobacteria: a review
V. Beran, M. Havelkova, J. Kaustova, L. Dvorska, I. Pavlik
Vet Med - Czech, 2006, 51(7):365-389 | DOI: 10.17221/5557-VETMED 
Cell wall deficient (CWD)-forms or L-forms of bacteria are characterized by a complete or partial loss of cell wall components and by the change of cellular shape. CWD-forms (spheroplasts) of bacteria are commonly prepared in vitro and are used for various practical applications. However, very little is known about the conditions required for the formation of CWD-forms of bacteria and mycobacteria in vivoand their significance in aetiology of various chronic diseases of humans (tuberculosis, sarcoidosis, and Crohn's disease) and animals (paratuberculosis). It is quite difficult to detect CWD-forms of mycobacteria in biological material...
Effect of polychlorinated biphenyls on the secretion of oxytocin from luteal and granulosa cells in cow: possible involvement of glucocorticoid receptors
J.J. Mlynarczuk, J. Kotwica
Vet Med - Czech, 2006, 51(7):391-398 | DOI: 10.17221/5559-VETMED
Polychlorinated biphenyls (PCBs) stimulate oxytocin secretion from bovine granulosa and luteal cells. Since oxytocin on the one hand is released from ovarian cells by cortisol and on the other hand PCBs can be bound by glucocorticoid receptors (GCr), we have tested the hypothesis that PCBs acting via GCr can stimulate oxytocin secretion. In preliminary studies the effect of RU486 (GCr blocker) on cells viability was tested. Thereafter, a selected dose of RU486 (105M), which did not affect cell viability, was used in further experiments. It appears that this dose of RU486 completely blocked GCr against cortisol-stimulated oxytocin secretion,...
The use of amaranth (genus AmaranthusL.) in the diets for broiler chickens
B. Pisarikova, Z. Zraly, S. Kracmar, M. Trckova, I. Herzig
Vet Med - Czech, 2006, 51(7):399-407 | DOI: 10.17221/5560-VETMED
The objective of our study was to test amaranth grain or dried biomass in the diet for broiler chickens as a resource of protein replacing animal protein. Further, the effect of amaranth on broiler performance, carcass characteristics and meat quality were assessed in a feeding trial. The experimental groups of broilers were fed feed mixtures with crude amaranth grain (AC), heat processed amaranth grain (AP) or dried above-ground biomass (AB). Control groups (C) received the diet containing animal proteins. The results obtained in the experimental groups of broiler chickens can be compared to the control group in all the production indicators under...