Abstract
The article presents theoretical analysis and practical experience of the production of premixes (P) by different technologies of preparation of the filler. Their advantages and disadvantages are stated. The classification of premix fillers is presented and the distribution of biologically active substances in the premix composition, which is made on different fillers, is schematically presented. The technology of production of a complex filler premixes (CFP) in the form is theoretically and practically substantiated. Various methods of forming depending on the composition of the complex filler are considered, as well as the technological scheme of their production is presented. The results of industrial approbation of technologies of forming (granulation, briquetting, rolling, extrusion) of fillers and ready premixes in the production conditions of TG "VBA" "Izvestnyaki" are presented. The physical indicators of the formed complex fillers / premixes were investigated, and on the basis of the analysis of the obtaineddata it was found that granulation and briquetting can be subjected to CFP consisting of 75… 50% wheat bran and 25… 50% limestone flour. The pellet is a CFP consisting of 85% wheat bran and 15% limestone flour. Optimal technological modes of forming KNP and P in different ways have been established, as a result of which it is possible to obtain particles of P, which, upon further mixing with the feed components, ensure a high homogeneity of the finished feed. The results of the study of microbiological parameters are presented, it is established that the formation of CFP or P reduces the bacterial flora and improves the conditions during their storage. The proposed technological methods of preparation of CFP can eliminate the stratification and stabilize its composition during transportation and storage.
Highlights
The quality of the premixes depends largely on the quality of the raw material that is included in their composition, the physical properties of the filler and the efficiency of the manufacturing process
Substantial changes in the physical properties of biologically active additive (BAA) preparations used for the production of premixes have prompted scientists and manufacturers of premixes to search for and introduce into the technology of production of premixes of complex fillers, the physical properties of which best meet the requirements of mixing BAA
The increase in the mass fraction of wheat bran in the composition of complex fillers more than 75% leads to a mixture that does not meet the requirements for fillers in terms of the content by mass of moisture in the production of premixes [21, 22]
Summary
The quality of the premixes depends largely on the quality of the raw material that is included in their composition, the physical properties of the filler and the efficiency of the manufacturing process. (France) allows to ensure uniform distribution of BAA in the composition of the premix, but such a premix is used to enrich and balance the diets of industrial laying hens and breeding adult poultry only in bulk feed and excludes its use for young animals [29] To eliminate these shortcomings, we have proposed a technology of mechanical encapsulation, which provides: separate preparation of fillers in the traditional way, by sieving on the puncture sieves PS No 12 ( 1.2 mm) with subsequent grinding of a large fraction and mixing the pass fractions of PS No 12 in these ratios; the introduction of 0,1-2,0 % of the enhancer Thixosil 38A (Aventis); the introduction of 1,5-2,0 % vegetable oil at the stage of formation of the pre-mixture of filler and BAА; selection of the powder fraction at the stage of preparation of fillers through sieve kapron No 27 and its subsequent deposition at the final stage of production of complex filler [30].
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