Veterinární medicína, 2004 (vol. 49), issue 6
Venous and arterial ammonia in dairy cows with fatty liver and hepatic failure
P. Mudron, J. Rehage, M. Holtershinken, H. Scholz
Vet Med - Czech, 2004, 49(6):187-190 | DOI: 10.17221/5693-VETMED 
In the present study we aimed to compare the arterial and venous plasma ammonia in dairy cows with fatty liver and hepatic failure. 75 Holstein-Friesian dairy cows were used in the investigation. Clinical examinations revealed liver failure in 14 cows (group LF). Diagnosis of hepatic failure was based on the clinical signs of hepatic encephalopathy, including anorexia, depressed consciousness, ataxia, somnolence, and coma, and on venous plasma ammonia >35 µmol/l. The other cows were divided according to their liver triglyceride content (wet tissue) into the following groups: low triglycerides (LT) < 30 mg/g (n = 24), medium triglycerides...
Digestibility of total and phytate phosphorus in young calves
V. Skrivanova, M. Marounek, R. Dvorak
Vet Med - Czech, 2004, 49(6):191-196 | DOI: 10.17221/5694-VETMED
Two experiments were conducted to determine digestibility of total and phytate phosphorus (P) in young calves. In the 1st experiment 14 male calves received a commercial milk replacer (6 l of milk per day) and had free access to a starter concentrate. In the 2nd experiment 21 male calves were divided into 3 groups and fed ad libitum a milk replacer (Group I), milk replacer and starter concentrate (Group II), and milk replacer and silaged maize cobs (Group III). Digestibility measurements were carried out at the age of 10 weeks (1st experiment), and 12 and 16 weeks (2nd experiment). In the 1st experiment phytate P accounted for 27.0% of the...
Serum amylase activity disorders in the course of experimental diabetes in rabbits
K. Burski, T. Ueland, R. Maciejewski
Vet Med - Czech, 2004, 49(6):197-200 | DOI: 10.17221/5695-VETMED
We evaluated the influence of experimental diabetes on the amylase release in exocrine pancreatic cells. Following a single alloxan injection, male rabbits were divided into control and four experimental groups according to the disease duration. Respectively after 21, 42, 90, and 180 days intervals, the final levels of glucose and amylase in the sera were determined spectrophotometrically by the use of an enzymatic method. The mean serum glucose level in healthy controls was 6.4 mmol/l. It reached its top value of 32.0 mmol/l after 42 days of diabetes, and decreased to 23.12 mmol/l on day 180. The mean serum amylase activity was 124 U/l in healthy...
The effects of diet supplemented with sodium bicarbonate upon blood pH, blood gases and eggshell quality in laying geese
I. Kaya, B. Karademir, O. Ucar
Vet Med - Czech, 2004, 49(6):201-206 | DOI: 10.17221/5696-VETMED
The effects of diet supplemented with sodium bicarbonate (NaHCO3) upon blood pH, blood gases and eggshell quality during the laying cycle in geese were investigated. Fourteen geese aged 2 yr old were divided into two groups as; control (Group C, n = 7) and 0.5% NaHCO3 -supplemented group (Group T, n = 7). After 15 days of adaptation period, blood samples were collected every 6 h during a single laying cycle (over 42 h) and the data obtained were analysed for the pH, base excess (BE-B), HCO3- concentration, partial CO2 pressure (pCO2) and total CO2 concentration...
Submicroscopic structure of canine articular cartilage
D. Horky, F. Tichy
Vet Med - Czech, 2004, 49(6):207-216 | DOI: 10.17221/5697-VETMED
Canine articular cartilage was studied in male dogs at age 1, 4, 5 and 8 years. Samples collected from four hip joints and two humeral joints in each age category were processed by standard methods to be examined by scanning and transmission electron microscopy. The cartilage of both joints was similar in structure. In the superficial cartilage layer of one-year-old animals, individual spindle-shaped chondrocytes in the extracellular matrix were, together with associated collagen fibrils, located parallel to the surface. When viewed by scanning electron microscopy, they were distinctly prominent above the surrounding surface. Changes in the thickness...
Nematodes from the genus Ascaridia parasitizing psittaciform birds: a review and determination key
V. Kajerova, V. Barus, I. Literak
Vet Med - Czech, 2004, 49(6):217-223 | DOI: 10.17221/5698-VETMED
In parrots (Psittaciformes), seven nematode species of genus Ascaridia have been found so far, both in wild birds and in birds in captivity. Five species are specific for parrots: Ascaridia hermaphrodita, A. sergiomeirai, A. ornata, A. nicobarensis and A. platyceri. Two species: A. galli and A. columbae, that infect gallinaceous and columbiform birds, respectively, were found also in parrots. On the basis of data from the literature and our own observations the taxonomy, synonyms and list of definite hosts of these nematode species were reviewed. The morphometrical features of nematode species were compiled...