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Abstract:
Now, the requirements for the ecological and nutritional qualities of beef increase. It is especially important to achieve the reduction of toxicants in industrially intensified regions. The territory of the Republic of North Ossetia - Alania is among the most polluted with heavy metals regions of Russia. The research aims to study the effectiveness of using chelaton and toxi-nyl dry in diets of fattening bulls to increase the economic and biological indicators when detoxifying heavy metals.
Research methods. The objects of research were the bulls of Simmental breed, which by analogue scale were divided into 4 groups of 10 animals each. The results were statistically processed by Student's t-test using mathematical analysis software package "Microsoft Excel".
Research results. To detoxify heavy metals in the diets of fattening bulls, adsorbents toxi-nyl dry and chelaton were used. The most productive and the biological effect provided combined use of these specified drugs that have sorptive properties. When feeding the mixture ofpreparations animals in the third test group had an increase in the average daily gain in live weight and a decrease in feed consumption per unit of production. When combined feeding these preparations bulls of the third test group underwent the optimization of metabolic processes in the rumen activating proteases, cellulase and amylase in the proventriculus content. In the rumen fluid of animals of this group there was an increase in the number of infusoria, the number of volatile fatty acids and propionic acid. When feeding preparations toxi-nyl dry and chelaton animals of the third test group versus the control underwent enriching their blood with erythrocytes, hemoglobin, crude protein, glucose, calcium and phosphorus. At this, by the end of the experiment, the combined use of the tested preparations allowed versus the control to reduce the concentration of zinc, cadmium and lead in the bulls' blood of the third test group.
Keywords: fattening bulls, heavy metals, adsorbents, live weight gain, rumen digestion, morphological and biochemical blood indexes.
The relevance of the topic. Productivity, physicochemical and technological properties of meat products and metabolic processes in bodies of young cattle are significantly affected by chemical pollutants. Among numerous pollutants heavy metals take special place. Their toxic effect is due to the fact that they form insoluble compounds with proteins,...