Veterinární medicína, 2007 (vol. 52), issue 1
Chromium as an essential nutrient: a review
A. Pechova, L. Pavlata
Vet Med - Czech, 2007, 52(1):1-18 | DOI: 10.17221/2010-VETMED 
Chromium (Cr) has been studied since the end of the 19th century, when carcinogenic effects of hexavalent Cr were discovered. Essentiality of trivalent Cr was demonstrated in 1959; Cr3+ has been studied in humans and laboratory animals since the 1970s and it is only since the 1990s that Cr has been studied as an essential element in livestock animals with the same intensity. Trivalent chromium is essential to normal carbohydrate, lipid and protein metabolism. Chromium is biologically active as part of an oligopeptide - chromodulin - potentiating the effect of insulin by facilitating insulin binding to receptors at the cell surface....
Development of an ELISA-based kit for the on-farm determination of progesterone in milk
R. Simersky, J. Swaczynova, D.A. Morris, M. Franek, M. Strnad
Vet Med - Czech, 2007, 52(1):19-28 | DOI: 10.17221/2009-VETMED
Effective reproductive management is a crucial concern in the dairy industry and missed oestrus and late recognition of unsuccessful insemination can lead to substantial financial loss. Progesterone levels change in a predictable manner with progress of the oestrus cycle and with the onset of pregnancy. We report here the development of a simple ELISA test for the measurement of progesterone levels in bovine milk. The method is based on the use of polyclonal antibodies raised against 11α-hydroxyprogesterone-hemisuccinate and competition for antibody binding sites between free progesterone and horseradish peroxidase-labelled progesterone. Binding...
The effect of white lupine on the performance, health, carcass characteristics and meat quality of market pigs
Z. Zraly, B. Pisarikova, M. Trckova, I. Herzig, M. Juzl, J. Simeonovova
Vet Med - Czech, 2007, 52(1):29-41 | DOI: 10.17221/2008-VETMED
The purpose of the present study was to assess the effect of diets for market pigs with 20% inclusion of lupine seeds, cv. Amiga, on the performance, health status, carcass characteristics, fatty acids (FA) profile of meat lipids and nutritional and sensory parameters of meat. Another purpose was to increase the nutritional value of a cereal-lupine diet (E1) by supplementation with lysine, methionine, threonine (E2) or fat (E3) and to perform a comparison with control diets containing animal protein (C1) or soy (C2). The experiments were performed on 50 pigs (50% males, 50% females) with initial body weights of 35.6 ± 2.2 kg, fed isonitrogenic...
Selenium content in the blood serum and urine of ewes receiving selenium-enriched unicellular alga Chlorella
J. Travnicek, L. Pisek, I. Herzig, J. Doucha, J. Kvicala, V. Kroupova, H. Rodinova
Vet Med - Czech, 2007, 52(1):42-48 | DOI: 10.17221/2007-VETMED
The effect of selenium supplementation in inorganic and organic form was investigated in three five-member groups of ewes and their lambs in the course of 7 months. The basal feed ration contained 55 µg Se, ewes of experimental group E1 received a supplement of 180 µg Se in sodium selenite, and ewes of experimental group E2 were applied a supplement of 180 µg selenium bound in the biomass of the alga Chlorella. Control group C did not receive any selenium. The ewes were in the stage of non pregnant, pregnancy and lactation during the experiment. Average contents of Se in the blood serum of ewes were as follows: E1 114.2 ± 23.6;...