OPTIMIZATION OF PRESSING IN THE TECHNOLOGY OF MANUFACTURING PHYTO-MINERAL-SALT BRIQUETTES FOR CATTLE

The presented article reveals the necessary conditions not only for storage, but also the manufacturing technology, parameters and composition of mineral-vitamin salt premixes, which for a long time do not lose their useful properties, as well as the integrity of their shape and attractive appearance. The purpose of the study: to determine the optimal pressing in the technology of manufacturing phytomineral salt briquettes for cattle. The highlight of the work is the use of almost free raw materials inherent in the local conditions of Eastern Kazakhstan as phyto-additives – Siberian fir needles, which remain a lot after logging, and which must be disposed of. There are several reasons for the fragility of the shape of briquettes, and one of them is the amount of crushing of fractions of phyto-additives, for example, Siberian fir needles, excessive crushing of which leads to a reduction in useful substances in it, but with such additives the salt mixture is well pressed and holds its shape. As the fractions increase, the hardness of the slime briquette and, consequently, its shelf life decrease. This work is devoted to finding the "golden mean" of the parameters, quantity and quality of additives in the salt mixture for the preparation of salt briquettes. The study of the technology of creating phytomineral salt briquettes showed that pressing at a pressure of 40 MPa is optimal in the process of their manufacture, at which the briquettes acquire a density of 1,763±0.146 g/cm3 and a strength of 6.68± 0.56 MPa. During long-term storage, the density and strength of phytomineral salt briquettes change slightly. However, this does not reduce their attractiveness in animals and, consequently, their licking ability. The obtained phytomineral-salt briquettes, consisting of feed salt with the addition of trace elements and needles of Siberian fir, are a feed additive useful for the body of cows in the form of briquettes