Safety and nutritional value of canned alfalfa feed when introducing new generation starter cultures

Abstract

his work is a continuation of research on the influence of new generation polymicrobiological starter cultures on the quality of canned feed in laboratory conditions, which began in 2018 and continues to the present. The purpose of the fragment of the presented studies was: to study the safety, chemical composition, nutritional value and organoleptic characteristics of silage when conservation the green mass of alfalfa with a new generation of starter cultures in laboratory conditions. The article presents the results of studies of the influence of polymicrobiological starters "Yarosil, bacterial preservative, suspension" containing Lactobacillus plantarum K-36, K-64, K-65, K-72, K-74, K-87, K-167; Lactobacillus lactis subsp. lactis Ep-157, Lactobacillus paracasei Ep-154 Ep-155 Ep-156 Ep-158, Streptococcus thermophilus K-35, the concentration (total) was 1.5ґ109 CFU / cm3, in an amount: 100 ml per ton, and Yarosil , dry powder "in an amount: 100 g per ton, in which the composition of the microflora was the same as in the ferment "Yarosil, bacterial preservative, suspension", but the concentration was different and amounted to (total) 8ґ1010 CFU / cm3, on the safety, chemical composi-tion, nutritional value and organoleptic characteristics of the obtained strength, and their influence on the indicated indicators has been established. The introduction of starter cultures in-creased the quality of the silage according to the indicators provided for by GOST R 55986-2014 and depended on the starter culture. The addition of the "Yarosil, bacterial preservative, suspension" starter culture to the green mass of alfalfa increased the crude protein content by 0.31% (the control sample con-tained 19.51%, the experimental one - 19.82%), reduced the crude fiber content by 0,14% (the control sample contained 28.69%, the experimental one - 28.55%), reduced the butyric acid content by 0.05% (the control sample contained 0.14%, the experimental one - 0.09% ). The addition of the Yarosil dry powder starter culture to the green mass of alfalfa increased the crude protein content by 0.45% (the control sample contained 19.51%, the experimental one - 19.96%), reduced the crude fiber content by 0,23% (the control sample contained 28.69%, the experimental one - 28.46%), contributed to the absence of butyric acid (the control sample contained 0.14%, the experimental butyric acid was not found). The addition of starter cultures had the positive effect on organoleptic characteristics.