Veterinární medicína, 2007 (vol. 52), issue 12

Negative effects of malachite green and possibilities of its replacement in the treatment of fish eggs and fish: a review

E. Sudova, J. Machova, Z. Svobodova, T. Vesely

Vet Med - Czech, 2007, 52(12):527-539 | DOI: 10.17221/2027-VETMED  

Malachite green has been used as an effective compound to control external fungal and protozoan infections of fish since 1933 but it has never been registered as a veterinary drug for use in food fish because of its potential carcinogenicity, mutagenicity and teratogenicity in mammals. The present paper reviews negative side-effects of malachite green including its accumulation and persistence in fish that have been treated and describes other alternative substances for the treatment of fish and fish eggs.

Lower quality bovine embryos may be successfully used for sex determination

M. Lopatarova, S. Cech, P. Krontorad, L. Holy, J. Hlavicova, R. Dolezel

Vet Med - Czech, 2007, 52(12):540-546 | DOI: 10.17221/1884-VETMED  

The aim of this study was to evaluate the effect of sex determination procedures in Day 7 to Day 8 bovine embryos of various quality. For the purposes of comparison we used high quality (HQ) as well as lower quality (LQ) embryos obtained from superovulated donors. The healthy embryonic cells isolated from HQ embryos and blastomeres protruding into the perivitelline space of LQ embryos, were analysed by polymerase chain reactions (PCR) using primers specific for the Y chromosome determinant. After microsurgical intervention and completion of sex determination, the female embryos were then transferred (ET) to synchronized recipients. A total of 310 embryos...

Effect of age upon retention of mercury in chickens with a different growth rate

J. Zelenka, J. Hedbavny

Vet Med - Czech, 2007, 52(12):547-551 | DOI: 10.17221/1885-VETMED  

Retention of total mercury was examined in groups of 95 slowly-growing laying type chickens and 52 fast-growing broiler hybrids in 47 subsequent balance periods from 1 to 100 days of age. Chickens were fed ad libitum on a diet containing 5.41 µg of Hg per kilogram. Until Day 4 the values of coefficients of apparent retention of Hg were negative or very low. They were influenced by excretion of endogenous nutrients originating primarily from the yolk sac. When evaluating the period of 4 to 100 days of age, the dependence of Hg retention coefficients upon age was highly significant (P < 0.01). The course of this dependence was...

Meat quality and tissue fatty acid profiles in rabbits fed diets supplemented with conjugated linoleic acid

M. Marounek, V. Skrivanova, A. Dokoupilova, M. Czauderna, A. Berladyn

Vet Med - Czech, 2007, 52(12):552-561 | DOI: 10.17221/1886-VETMED  

In this study the deposition of dietary CLA isomers in loin and hindleg meat, liver and fat, and the influence on performance and fatty acid (FA) profile were investigated in growing rabbits. CLA was supplied as synthetically produced oil at 5 and 10 g/kg diet for the whole fattening period (six weeks) or three weeks before the slaughter. CLA had no or limited effect on feed intake, growth, carcass traits and composition of meat. Treatment with CLA increased the proportion of saturated FA at the expense of monounsaturated FA in meat and liver. Supplementation of the diet with CLA increased (P < 0.05) CLA in lipids of meat from < 1 mg/g...

Tests for the presence of koi herpesvirus (KHV) in common carp (Cyprinus carpio carpio) and koi carp (Cyprinus carpio koi) in the Czech Republic

D. Pokorova, V. Piackova, A. Cizek, S. Reschova, J. Hulova, M. Vicenova, T. Vesely

Vet Med - Czech, 2007, 52(12):562-568 | DOI: 10.17221/1883-VETMED  

An outbreak of koi herpesvirus (KHV) infection associated with high mortality of common and koi carp was recorded in the USA and Israel in 1998. At present, this disease is viewed as one of the most significant factors that can adversely affect common and koi carp breeds. The disease has spread worldwide including European countries neighbouring with the Czech Republic (CR), i.e. Germany, Poland, and Austria. To monitor the situation in the CR, samples were collected from a total of 138 common and koi carps in seven and eight locations in CR respectively, and were examined between 2005 and 2006. Locations owned by the major producers of common and...

VOLUME 52 - CONTENTS, AUTHOR INDEX, AUTHOR INSTITUTION INDEX, LIST OF REVIEWERS

editors

Vet Med - Czech, 2007, 52(12):569-577 | DOI: 10.17221/1887-VETMED