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Biomedical subjects

J Masek

Publications and source records attributed to J Masek.

At least 37 records · Page 2Linked to original sources
PubMed1981

[Foreign substances in the meat and organs of bulls fed on a diet of swine and poultry fecal waste].

The meat and some organs of eight bulls given diet with 5% to 15% supplements of dried pig and poultry excrements for 175 days were subjected to examination for the presence of some foreign substances. The results were compared with samples from eight control bulls, fed the basal diet. Liver was not found to contain any aflatoxins B1 and M1. No statistically significant differences were found in the content of antimicrobial substances. The same can be said of the content of chlorinated pesticides. Residues of organo-phosphorus pesticides were not detected at all. As to chemical elements, the test bulls were found to have a significantly increased content of copper in liver and diaphragm. All the findings of the residues of foreign substances were within limits tolerated by veterinary regulations.

Animal Feed↗
PubMed1980

[The occurrence of foreign substances in food products from animals fed food supplements of animal excrement].

The products of the animal origin (meat, organs, adipose tissue, eggs) from bulls, pigs and poultry which had been given animal excrements as supplements to their feeds (mostly pig excrements, in one case poultry excreta) were studied as to the content of foreign substances. The almost complete absence of aflatoxin and antimicrobial substances, and the determined levels of pesticide residues and chemical elements demonstrated that the studied foreign substances did not accumulate in the tested food as a result of the presence of non-traditional components in the diets of the animals.

Aflatoxins↗
PubMed1980

[Lead content of muscles and liver of cattle].

182 samples of bovine musculature and 183 samples of bovine liver obtained from the sanitary slaughters in the North Moravian region, mostly at Frýdek-Místek, over the February and March 1978, were examined for the lead content by the method of atomic absorption spectrophotometry. The lead content in the examined samples of musculature ranged from 0 to 0.80 mg per kg (average value 0.28 mg per kg) and in the examined samples of liver from 0 to 1.23 mg per kg (average value 0.39 mg per kg); in 2.2 per cent of liver samples the level of lead was higher than 1.0 mg per kg. The highest admissible level of lead in bovine musculature and liver is being discussed, and the tolerated level of weekly intake by adult persons.

Animals↗