Quality of meat of steers of different breeds reared for eco-tourism in Heavy metal toxicity prone region.

Abstract

The aim of the study was to control the consumer qualities of meat of steer of different breeds and meat products when grown on a diet with excessive levels of heavy metals when organizing ecological tourism in the Republic of North Ossetia -Alania. The study was conducted on the animals of different breeds (10 goals each): group I (control) -Red Steppe (dairy breed), group II (experimental 1) -Black Pied (dairy breed), and group III (experimental 2) -Schwyz (beef and dairy breed). In the case of an increased content of heavy metals in feed in the ecological tourism zone of the Republic of North Ossetia -Alania (Russia), it is advisable to breed Swiss calves, which are distinguished by higher rates of muscle growth and, as a result, increased ecological, nutritional and biological value of meat. Calves of the 2nd experimental group (Schwyz) had better parameters of hot carcass weight, visceral fat content and cutting weight than their control group. The higher proportion of meat of the first and first grade in the carcasses of animals of the 2 experimental groups is the result of an increase in growth rates with an increased content of heavy metals in feed. We observed a decrease in zinc levels by 77.3%, lead by 81.0% and cadmium by 88.2% in meat samples from experimental group 2 calves. The content of elements in the samples of musculus longissimus from the calves of the III experimental group did not exceed the MPC. The third sample of the final meat product from Schwyz animals contained 1.24% and 1.49% more dry matter and protein than the control sample. The third sample of «Slavyanskii baked and smoked» meat product contained 79.8% less zinc, 88.9% less lead and 83.32% less cadmium than the control sample. The content of heavy metals in the third sample obtained from the meat of Schwyz calves was below the MPC, and this sample showed the best results for organoleptic evaluation.

The influence of adsorbent and antioxidant on meat productivity and nutritional value of bull meat

“…оставляют желать лучшего из-за устойчивого роста уровня загрязнения окружающей среды различными токсичными соединениями химической природы. Особую опасность из них для организма откармливаемых животных и человека через мясные продукты питания представляют соли тяжелых металлов (ТМ) [4][5][6].…”