Effect of oral cadmium and zinc application on leukocytes biological activity in Japanese quails (Coturnix coturnix japonica).

Objective of this study was to investigate changes in biological activity of blood leukocytes in Japanese quails, caused by zinc and cadmium administration. Four groups of Japanese quails were used. Three experimental groups of quails were exposed either to Cd (0.

[Detection of sarcocystosis in slaughterhouse animals during a veterinary inspection].

The objective of our study was to acquire objective data on the finds of sarcocystiosis incidence in particular species of farm animals during veterinary inspection and to compare the efficiency of different direct diagnostic methods: compression and digestion methods. The examined and observed animals involved sheep, cattle, pigs and goats slaughtered in the packing plants at Ruzomberok, Rimavská Sobota, Trstená, Sabinov and Kosice. The animals were subjected to regular veterinary inspection including aspection focused on predilection spots of sarcocyst incidence.

[Transport of nitrates and nitrites into the milk of dairy cows through the digestive system].

Increased nitrate concentrations in milk are not only dangerous to human health as the milk is the material for production of baby and infant food, but they cause also many problems in technological milk processing. The study was aimed at the transfer of nitrates and nitrites into milk of dairy cows following nitrate loading. An experiment included 6 dairy cows of the Slovakian Spotted breed at the Experimental Veterinary Centre at Zemplínska Teplica.

[Dynamics of methemoglobin levels in the blood of calves in relation to the ingested quantity of nitrates and the transrenal transport of nitrates].

Changes of methaemoglobin levels were investigated in the blood of suckling calves. Transrenal passage of nitrates was determined in dependence on the ingested amount of nitrates. The experiments were conducted under defined husbandry conditions; no excessive nitrate and nitrite supplementation of the calves by feeds and water could be stated.

[A method of extraction in the detection of residual inhibiting substances in the tissues of pigs and calves after unavoidable slaughter].

Differences were studied in detecting residues of inhibitory substances in tissue samples of pigs and calves after emergency slaughter. Samples of liver, heart, kidney and muscle of 30 pigs and 16 calves were examined. Solid samples of organ tissues placed on an agar medium and extracts of the solid samples placed into agar pits were used for detection.