Veterinární medicína, 2001 (vol. 46), issue 9-10
Optimal dietary concentrations of vitamin C and chromium picolinate for alleviating the effect of low ambient temperature (6.2 degrees C) on egg production, some egg characteristics, and nutrient digestibility in laying hensOriginal Paper
N. Sahin, K. Sahin
Vet Med - Czech, 2001, 46(9):229-236 | DOI: 10.17221/7887-VETMED 
This experiment was conducted to evaluate the effect of vitamin C (L-ascorbic acid) and chromium (chromium picolinate, Cr Pic) on egg production, some egg characteristics, and digestibility of nutrients in laying hens (Hy-Line) reared under a low ambient temperature (6.2°C). Two hundred and ten laying hens (32 week-old) were divided into seven groups, 30 hens per group. The treatment groups were designed in a 2 × 3 factorial arrangement using two levels of vitamin C (125 and 250 mg/kg of diet) and three levels of chromium picolinate (200, 400, or 800 µg/kg of diet), and control group was fed basal diet. The highest values of performance were...
In vitro antagonistic effect of nisin on faecal enterococci and staphylococciOriginal Paper
A. Lauková, I. Štyriak, M. Mareková
Vet Med - Czech, 2001, 46(9):237-240 | DOI: 10.17221/7885-VETMED
Enterococci and staphylococci, isolates from faecal samples of 46 different animals such as deer, chamois, European bison, zebra, camel, antelope, gazelle, horse, and piglets were treated by nisin (concentration 1 mg/ml). Only two strains (SX38 and EA163), isolates from the faeces of deer were not inhibited by nisin under in vitro conditions. It means 97.4% of target isolates were inhibited by nisin and 2.6% were resistant. The majority of microorganisms were inhibited by nisin under MIC 1.56-100 µg/ml. Twenty-two percent out of 77 isolates were inhibited by MIC of nisin 3.12 µg.Enterococcus sp. E6B strain was found the...
Antibody responses in buffalos immunized with Clostridium perfringens beta and epsilon toxoidsShort Communication
S. M Rahman, K. B Baek, T. S Hong, H. J Lee
Vet Med - Czech, 2001, 46(9):241-243 | DOI: 10.17221/7886-VETMED
The antibody responses to toxoids were measured to investigate whether Clostridium perfringens beta and epsilon toxoids induced protective humoral immune responses in buffalos. Total of 24 buffalos were divided into 4 groups (n = 6), beta toxoid, epsilon toxoid, combination and control groups. These buffalo groups were administered each of the designated toxoids. Immunizations in the beta and epsilon toxoid groups induced strong antibody responses. The neutralizing antibody titres from the beta and epsilon toxoid groups were equally log101.2 on day 21 after inoculation whereas there was no antibody titre detected from the control...
Amantadine: an antiviral and antiparkinsonian agentInformation
J. Staničová, P. Miškovský, V. Šutiak
Vet Med - Czech, 2001, 46(9):244-256 | DOI: 10.17221/7884-VETMED
Amantadine is an antiviral agent that specifically inhibits influenza A virus replication at a micromolar concentration. This drug is also very effective in the treatment of human Parkinson's disease. Other important clinical applications of this agent have been studied recently, ranging from viral infections, e.g. herpes, herpes zoster neuralgia to granulomatosis and from neuroleptic extrapyramidal movement disease to depression and cocain dependence. Biological and pharmacological activities of amantadine presented in this paper are focused on the explanation of the mechanism of amantadine antiviral and antiparkinsonian effects and on general use...
Quinolones: a class of antimicrobial agentsReview
G. Sárközy
Vet Med - Czech, 2001, 46(9):257-274 | DOI: 10.17221/7883-VETMED
The fluoroquinolones are a series of synthetic antibacterial agents that are used in the treatment of a variety of bacterial infections. These agents inhibit the DNA gyrase, abolishing its activity by interfering with the DNA-rejoining reaction. The inhibition of the resealing leads to the liberation of fragments that are subsequently destroyed by the bacterial exonucleases. All fluoroquinolones accumulate within bacteria very rapidly, so that a steady-state intrabacterial concentration is obtained within a few minutes. Resistance develops slowly and is usually chromosomal and not plasmid mediated. However, development of resistance and transfer between...
The 80th birthday of Prof. Jozef Vodrazka, MVD, D.Sc., and 52nd anniversary of the Department of Pharmacology at the University of Veterinary Medicine in Kosice, the Slovak RepublicInformation
V. Šutiak, I. Šutiaková
Vet Med - Czech, 2001, 46(9):275-277 | DOI: 10.17221/7889-VETMED
Unusual cultural activites of a research institutionInformation
L. Pospíšil
Vet Med - Czech, 2001, 46(9):278-279 | DOI: 10.17221/7888-VETMED