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Application of zeolite in the diet of pigs showed multiple effects, and its application as a specific adsorbent resulted in increased growth and food conversion. In order to study effects of tufozel as representative of the zeolite on the meatiness and thickness of fat tissue, research was conducted on three groups of pigs: cross bread gilts, boars and castrates. Each category of pigs was divided into two groups, control and experimental. The experimental group was fed with feed containing 0.5% of tufozel. After fattening, pigs were slaughtered at the slaughter line and the meatiness of warm carcasses was examined by measuring the thickness of fat on animals' back and weight of warm carcasses. Average weight of carcasses from the experimental group was higher compared to the control, the difference being highest in the category of young boars. The thickness of fat tissue value was statistically lower (p lt 0.001) in experimental groups of gilts and castrates, compared to the group of young boars. Tufozel impact on the average weight and meat percentage in carcasses of castrates and gilts was statistically highly significant (p lt 0.001). Statistically significant difference in yield (p lt 0.05) was also observed within the category of young boars, between control and experimental group, the latter showing higher yield values. The results indicate a positive effect of tufozel on parameters of meatiness of investigated pig categories. Primena zeolita u ishrani svinja pokazala je pozitivno dejstvo na proizvodne parametre svinja u tovu, te njihova primena kao specifičnih adsorbenata ima svoje nutritivno, medicinsko i ekonomsko opravdanje. Radi ispitivanja dejstva tufozela, kao predstavnika zeolita, na mesnatost trupova i debljinu masnog tkiva, istraživanje je sprovedeno na tri kategorije svinja ukrštenih rasa: mlade nerastove, nazimice i kastrate. Svaka kategorija svinja podeljena je u dve grupe, kontrolnu i oglednu. U obroke oglednih grupa umešano je po 0,5% tufozela. Posle završenog tova, svinje su zaklane, a na liniji klanja ispitivana je mesnatost trupova i to merenjem debljine masnog tkiva na leđima i merenjem mase toplih polutki. Kod svinja ispitanih kategorija, prosečna masa trupa oglednih grupa bila je veća nego kod kontrolnih, s tim da je kod nerastova ta razlika bila najveća. Razlike u debljini masnog tkiva kod oglednih grupa kastrata i nazimica pokazale su se statistički visoko značajne (p lt 0,001), dok između prosečne debljine masnog tkiva ogledne i kontrolne grupe mladih nerastova nije utvrdena statistički značajna razlika. Uticaj tufozela na prosečnu masu mesa i procenat mesa u trupu kod kastrata i nazimica oglednih grupa pokazao se kao statistički visoko značajan (p lt 0,001). Između prinosa mesa kontrolne i ogledne grupe mladih nerastova izraženog u kg, odnosno u %, utvrđena je statistički značajna razlika (p lt 0,05). Dobijeni rezultati ukazuju na pozitivan uticaj tufozela na parametre mesnatosti i mesnatost ispitivanih kategorija svinja.

Mycotoxins are secondary metabolities produced by saprophytis species of fungi. They exert toxigenic activity, including carcinogenicity, immunosuppression, inhibition of protein synthesis, dermal irritation and many other metabolic problems. Mycotoxins usually enter into the body by ingestion of contaminanted food, inhalation of toxigenic spores and direct dermal contact. Molds may be present into substrat without production toxin. When mycotoxins are detected, it is not easy to prove a disease. In any way, mycotoxins are danger to human and animal health. Description of appearance, toxic profiles and chemical structures of main mycotoxins are reviewed.

Here, we report the design of a disposable single-drop voltammetric sensor for the quantitative determination of antipsychotic drug trifluoperazine (TFP). The sensor was built using inkjet-printed carbon nanotube (CNT) electrodes, which were modified with dimercaptosuccinic acid (DMSA)-coated magnetite nanoparticles uniformly dispersed over reduced graphene oxide nanosheets (DMSA/Fe3O4/RGO). The used modifying materials were characterized by electron microscopy techniques (transmission electron microscopy (TEM) and field emission-scanning electron microscopy (FE-SEM)), X-ray powder diffraction, ζ-potential measurements, dynamic light scattering (DLS), and electrochemical methods (cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS)). The developed sensor, best operated at pH 7 in the Britton-Robinson buffer solution (BRBS), shows linear electrocatalytic activity with TFP in the concentration range of 1-50 μM, a low detection limit of 0.54 μM, and excellent selectivity, repeatability, and reproducibility with an relative standard deviation (RSD) of 2.4%. A voltammetric approach using square wave voltammetry (SWV) is a sensitive technique under optimized conditions for the analytical determination of submicromolar amounts of TFP. Bare CNT and RGO- and DMSA/Fe3O4-modified CNT electrodes showed lower electrocatalytic activity than the DMSA/Fe3O4/RGO/CNT electrode. The development of this kind of TFP sensor based on nanoparticle-decorated graphene nanosheets can offer a tool for point-of-care applications as sensors in biomedicine.