ABSTRACT
AIM: This study investigated the effects of antitox and Vitamin E-selenium on meat quality and safety in rabbits after experimental 1,1-dimethylhydrazine (1,1-DMH) toxicosis. MATERIALS AND METHODS: Experimental groups of rabbits weighing 1.5-2.5 kg each were kept in a vivarium under same controlled conditions (temperature 16-21°C, humidity 60-80%, 12/12 h light/dark cycle, noise level <85 dB) with free access to standard food containing 22.0% protein, 4.5% fat, and 4% fiber. The effect of a detoxifying mixture of antitox and Vitamin E-selenium on safety indicators (residual amount of 1,1-DMH) and quality indicators pre- and post-detoxification of the rabbits from 1,1-DMH was determined. RESULTS: After detoxification, the residual 1,1-DMH level decreased in all organs and tissues to <0.1 mg/kg. The nutritional value of meat increased by improving organoleptic, physical, and chemical parameters and the amino acid composition of protein. CONCLUSION: The antitox+Vitamin E-selenium detoxifying mixture significantly decreases the residual 1,1-DMH level in organs and tissues of animals and increases the nutritional value of rabbit meat in subacute poisoning. The detoxifying mixture can also be used on animals grazing in territories adjacent to Proton-M launch sites for preventive and therapeutic purposes.
ABSTRACT
The aim of this study was to assess occurrence of Clostridium botulinum and Clostridium perfringens in honey samples from Kazakhstan. Analyses were carried out using a set of PCR methods for identification of anaerobic bacteria, and detection of toxin genes of C. botulinum and C. perfringens. Among 197 samples, C. botulinum was noticed in only one (0.5%). The isolated strain of this pathogen showed the presence of the bont/A and ntnh genes. C. perfringens strains were isolated from 18 (9%) samples, and mPCR (multiplex PCR) analysis led to them all being classified as toxin type A with the ability to produce α toxin. Sequence analysis of 16S rDNA genes showed occurrence in 4 samples of other anaerobes related to C. botulinum, which were C. sporogenes and C. beijerinckii strains. C. botulinum prevalence in honey samples from Kazakhstan in comparison to the prevalence in samples collected from the other regions seems to be less. The highest prevalence of Clostridium sp. was noticed in the East Kazakhstan province. Our study is the first survey on BoNT-producing clostridia and C. perfringens prevalence in Kazakh honey.
