Veterinární medicína, 2005 (vol. 50), issue 11
Nitrite influence on fish: a review
H. Kroupova, J. Machova, Z. Svobodova
Vet Med - Czech, 2005, 50(11):461-471 | DOI: 10.17221/5650-VETMED 
Nitrite is an intermediate in the oxidation of ammonium to nitrate. An elevated ambient nitrite concentration is a potential problem for freshwater fish since nitrite is actively taken up across the gills in competition with chloride. Nitrite is a well-known toxicant for fish as well as a disrupter of multiple physiological functions including ion regulatory, respiratory, cardiovascular, endocrine and excretory processes. One critical consequence of nitrite accumulation is the oxidation of haemoglobin to methaemoglobin, compromising blood oxygen transport. Nitrite toxicity to fish varies considerably and depends on a large number of external and internal...
Diet induced ruminal papillae development in neonatal calves not correlating with rumen butyrate
R. Zitnan, S. Kuhla, P. Sanftleben, A. Bilska, F. Schneider, M. Zupcanova, J. Voigt
Vet Med - Czech, 2005, 50(11):472-479 | DOI: 10.17221/5651-VETMED
The objective of this study was to investigate the development of rumen mucosa and the level of plasma IGF-1 in calves induced by different amounts and types of milk replacers and solid diet. Forty-five male Holsteincalves 7 days of age were assigned to three groups: group I milk free replacer, late weaned; group II milk free replacer, early weaned, and group III milk replacer, early weaned. All animals received additional concentrate, water and maize silage were offered ad libitum. In each group, three calves were slaughtered at 41 days of age. The concentration of ruminal total SCFA and the molar proportion of butyrate did not differ between...
Effect of microbial oil, evening primrose oil and borage oil on rumen fermentation in vitro
D. Jalc, A. Potkanski, M. Szumacher-Strabel, A. Cieslak, M. Certik
Vet Med - Czech, 2005, 50(11):480-486 | DOI: 10.17221/5652-VETMED
The objective of this study was to examine the effects of microbial oil, evening primrose oil and borage oil on rumen fermentation of a diet consisting of 80% of hay and 20% of barley in an artificial rumen (Rusitec). All three oils contained gamma-linolenic acid (GLA), microbial oil - 8.4%, evening primrose oil - 9.2% and borage oil - 23.7% out of the total fatty acid content. The experiment in Rusitec lasted 11 days. After a stabilization period (5 days), microbial oil (5% wt/wt) was added into fermentation vessel V2, evening primrose oil (5% wt/wt) into V3 and borage oil (5%wt/wt) into V4 (6 days). Fermentation vessel...
Influence of polychlorinated biphenyls (PCBs) and phytoestrogens on prostaglandin F2α and E2secretion from bovine endometrial cells at a postovulatory stage of the estrous cycle
M. Wrobel, J. Kotwica
Vet Med - Czech, 2005, 50(11):487-495 | DOI: 10.17221/5653-VETMED
Polychlorinated biphenyls (PCBs) and phytoestrogens were found to affect contractions of bovine uterus. Prostaglandins (PG) F2á and E2 are also involved in the uterine contractility. Hence the aim of these studies was to investigate the effect of PCBs and some phytoestrogens on PG secretion from endometrial cells obtained on days 1-5 of the oestrous cycle. Cells were incubated in aerated atmosphere at 38°C for 24 h, separately with the mixture of PCBs - Aroclor 1248 (10 ng/ml), with individual congeners -77, -126 or -153 (each at the dose 100 g/ml), coumestrol, daidzein or genistein (each at the dose 10-6M)...
Prevalence of dental disorders in pet dogs
M. Kyllar, K. Witter
Vet Med - Czech, 2005, 50(11):496-505 | DOI: 10.17221/5654-VETMED
Oral disorders of the dog represent for veterinarians a medical challenge and an important field of interest from the economical point of view. Although many epidemiological studies on dental diseases in beagles bred under controlled conditions have been realized, information on frequency of these alterations in populations of pet dogs, especially in Central Europe, is far from complete. The aim of our study was to assess the prevalence of the most common oral diseases in dogs in a Czech urban region. A total number of 408 dogs, presented at a private Czech urban veterinary hospital for different reasons, were analyzed. Site specificity and severity...
Hypospadias in three calves: a case report
M.R. Alam, S.H. Shin, H.B. Lee, I.H. Choi, N.S. Kim
Vet Med - Czech, 2005, 50(11):506-509 | DOI: 10.17221/5655-VETMED
Two to three weeks old 3 male indigenous Korean calves weighing 35-40 kg were referred to the Animal Medical Centre,ChonbukNationalUniversitywith signs of urine scalding on the ventral perineum. Physical examination in all 3 cases revealed aplasia of the penis along with an undescended testis, bifid scrotum and ventrally incomplete sheath. In case 1, the urethra opened cranially to the bifid scrotum, whereas in case 2 and 3, the urethra opened at the ventral perineum. The diagnosis was made as hypospadias, along with penile aplasia and unilateral cryptorchidism. With an exploratory laparotomy, the abdominal testis was removed. The scrotal testis was...
First cases of canine dirofilariosis inSlovakia: a case report
V. Svobodova, Z. Svobodova, V. Beladicova, D. Valentova
Vet Med - Czech, 2005, 50(11):510-512 | DOI: 10.17221/5656-VETMED
Dogs from two locations in West Slovakiasuspected to have dirofilariosis were tested with the help of microfilariae detection, histochemical identification of microfilaria species and Dirofilaria immitis specific antigen detection in the blood serum. Six out of the group of 15 dogs from Bratislava region were found positive with Dirofilaria repens microfilariae. In the second location situated farther to the south, near Komarno, 6 out of 7 dogs were found positive with D. repens microfilariae and 2 with D. immitis. Serological detection of D. immitis antigen was positive in 3 cases among the dogs from this...
A survey of rats and mice for latent toxoplasmosis inCroatia: a case report
V. Kuticic, T. Wikerhauser, D. Gracner
Vet Med - Czech, 2005, 50(11):513-514 | DOI: 10.17221/5657-VETMED
Academyof Sciences and Arts,Zagreb,Croatia ABSTRACT: Brain tissues of 142 rats and 86 mice were bioassayed for toxoplasms. Each tissue was homogenized and subcutaneously injected into 4 SPF mice. Six weeks later, the mice were euthanatized and their brains were examined microscopically for Toxoplasma gondii tissue cysts. Two (1.4%) of the rats but none of the mice were positive. This is the first isolation of T. gondii from rats inCroatia.