Meat productivity and quality of raw meat when using a phosphorate feed additive in the diet of broiler chickens

The article presents material on the effect of phosphorite and nanostructured phosphorite in the form of a feed additive on the body of meat-producing chickens. It was shown that the introduction of phosphorite at a dose of 1.0 % and nanostructured phosphorite at a dose of 0.4 % to the dry matter of the diet into the diet of broiler chickens provided an increase in live weight by 2.8 and 7.4 % (P<0.05), weight of gutted carcasses - by 3.8 and 9.7 % and slaughter meat yield – by 0.6 and 1.2 %, in comparison with control analogues. In the organoleptic evaluation, significantly better indicators were achieved in the meat and broth of experimental broilers in terms of appearance, aroma, taste and richness. The use of phosphorite and nanostructured phosphorite in the diet of broilers did not have a negative impact on the physicochemical parameters of meat. In the study of the chemical composition of white and red meat, a significant decrease in moisture content by 2.6-4.2 % and an increase in mineral substances by 4.8-8.2 % were found with the best values when using nanostructured phosphorite.