Archivum veterinarium Polonicum最新文献

The purpose of the study was the evaluation of the thermal changes within mammary gland in cows, after experimentally invoked inflammation, developed as a result of 60 ml of 20% NaCl solution given directly into the udder (A and D quarters). Three hours after injection, the increased' temperature of teats and their bases by 2.26 degrees C and 0.58 degree C, respectively, was stated. The temperature was still increased after 6 hours from NaCl solution injection. It was accompanied by increase of heat flux from the skin surface by 50.17 mW/cm2 taken from the teat surface, and by increased values of Burton Index--the tissue blood supply index.

On 27 German Landrace boars studies were conducted to describe the effect of feeding level during the growth period on the microscopic picture of vesicular glands in boars at 5, 6 and 7 months of age. Investigations have shown that differentiation of feeding level during the growth period affected the development of internal structures of the parenchyma in the boars' vesicular glands. The size of the tubules, their number within the field of vision and height of glandular epithelium lining the tubules were the highest in the group of animals fed at increased level.

Growth relationships between spleen and liver weights and body weight and CR length as well as between weights of liver and spleen in fetuses (145 males, 141 females) of black-white cattle. According to their body weights, the fetuses were divided into 4 growth groups: I, to 1000 g; IIa, 1000-3490 g; IIb, 3500-7990 g; III, over 8000 g. The relationships were described using appropriate allometric growth equations (log Y = b log X + A) derived both for individual groups and for the entire fetal period. Relative weights of the organs studied and the liver-spleen coefficient (L/S) were determined as well. The results are presented in equations, tables, and graphs.

Using anatomical as well as radiographic and tomographic methods, sixty brains of the N. American mink were examined. It was found that the brain consists of four ventricles. Also, it was noted that the posterior horn was missing and that there was the olfactory recess present in the lateral ventricle, a large-size interthalamic connection present in the third ventricle, and a flat, necklace-like bottom in the fourth ventricle. Only recently, the ins and outs of the mink's anatomical structure have begun to absorb anatomists. Apparently, it is related to the fact that furry animals, among them the mink, are being domesticated as if "before our eyes". For this reason and because of the easy access to material, examining of the brain ventricles in the mink was taken up.

Neuronal uptake (uptake1), extraneuronal uptake (uptake2) and the spontaneous release of 2H-noradrenaline (NA) in uterine artery of swine on days 0, 1-2, 13-14 and 16-18 of the oestrous cycle were studied. It was found that uptake1 was lowest on the day of ovulation (day 0) and then it increased by 37.4% (p < 0.05) and by 93.7% (p < 0.01) on days 1-2 and 13-14, respectively. On days 16-18 of the oestrous cycle uptake1 was insignificantly higher (9.3%) compared to the day 0. Also uptake2 was the lowest on day 0 and next it increased to 180.1% (p < 0.01) on days 1-2. Thereafter this value was still higher compared to day 0 but it had decreasing tendency: 140.3% (p < 0.05) on days 13-14 and 113.8% on days 16-18 of the oestrous cycle. Release of neuronal radioactivity was the lowest on day 0 and then it increased by 40.0-44.2% (p < 0.05), 46.8-49.5% (p < 0.05) and 26.1-28.1% (p > 0.05) on days 1-2, 13-14 and 16-18 of the oestrous cycle, respectively. The release of extraneuronal radioactivity was the highest on day 0 (accepted as 100%) and similarly high (88.6-91.8%) on days 13-14 but markedly lower (28.3-36.0%; p < 0.05) on days 1-2 and 16-18 (43.9-50.1%; p < 0.05) compared to the value on day 0 of the oestrous cycle.

Changes in insulin, plasma glucose and tissue glycogen were considerable and statistically significant when the smaller dose of folic acid was given, comparing with the bigger one. In both cases the physiological proportions between examined parameters were not maintained.

The ultrastructure of rat's pterygopalatine ganglionic neurocytes after starvation was investigated. The following changes of cell organelles were observed. The mitochondria display altered internal structures--lack of matrix, swellings, and myelin structures. Rough endoplasmic reticulum and free ribosomes were reduced. Strong plication of nuclear membrane, diminution of nucleoli, increased number of lysosomes and lipofuscin granules were also noticed. The extent of these changes is variable and depends on the time period of starvation. The smallest changes were observed in the groups starved for 24-48 hrs, the largest--in the groups starved 120-144 hrs.

The levels of factor VII in horse, cattle, sheep and pig plasmas were estimated by the use of the synthetic chromogenic substrate, benzoyl-isoleucyl-glutamyl-glycyl-arginyl-p-nitroanilide (S-2222). The highest level of factor VII was observed in the cattle plasma, the lowest one in the plasma of the pig.

The examinations were carried out on 79 cattle fetuses, the age of which was determined with Kantorova's method, and 10 newborns aged 1-14 days. Pelvis arteries were filled with latex dyed with red pigment through aorta or umbilical artery. The aim of the examinations was to determine the direction and rate of the developmental transformations of vaginal and internal pudendal arteries and their offshots in fetuses compared with newborns' arteries. As a result of the conducted investigations it was established that the aforementioned arteries underwent various qualitative and quantitative changes in the course of the fetus development.

The objective of the paper was to show the effect of supplementation of biotin (vitamin H) on vitamin C synthesis in chickens. A significant vitamin C increase was observed in kidneys, adrenal glands, liver, glandular stomach, jejunum wall, caecum wall and in blood plasma. A clear increase in the level of D-glucuronic acid was observed in adrenal glands, jejunum wall, and caecum wall. The activity of L-gulono-gamma-oxidase enzyme clearly increased in adrenal glands, jejunum wall and in stomach. The increase in vitamin C synthesis was found in adrenal glands, jejunum, caecum wall and stomach, but accumulation of vitamin C took place in liver and kidneys. The data imply that the supplementation of biotin accelerates vitamin C synthesis in chickens. Biotin, increasing vitamin C level in the organism, indirectly affects all the processes taking place with the participation of vitamin C.