Comparative analysis of the effect of SILA-PRIME preservative and the addition of fireweed on the silos capacity of alfalfa changeable

The article presents the results of silage of variable alfalfa with the addition of the biological preservative SILA-PRIME in the first variant and only the addition of fireweed (Chamerion anqustifolium L.) in a dose of 15% by weight of alfalfa in the second variant. As a control option, alfalfa silage was taken in its pure form without additives. The research was carried out in the conditions of the NorthWestern region of Russia in the Vologda region. A positive effect on the silage capacity of alfalfa of both additives separately was noted. It was revealed that the addition of fireweed in comparison with the option with the addition of only a preservative to the silage mass allows you to get a feed of the best quality in terms of nutritional content – protein content of 17.7%, the output of metabolic energy of 10.6 MJ / kg of dry matter.

Introduction. The basis for keeping highly productive animals is the availability of feed that meets the quality requirements. The productivity of animals largely depends on the level and usefulness of feeding. An important circumstance should also be considered the economic component of the feed received, namely their cost. The use of chemical, biological preparations or without them affects the quality of the feed received and the final price of livestock products.

Object. The object of research was alfalfa silos.

Materials and methods. The research was carried out at the pilot site of the Vologda GMHA and in the SEC (collective farm) "Nikolotorzhsky" of the Kirillovsky district of the Vologda region. Chemical analyses of the obtained feeds were carried out according to generally accepted methods in the North-Western Research Institute of Dairy and Grassland Farming Vologda Scientific Center of the Russian Academy of Sciences.

Results and conclusions. The studied samples of alfalfa silage differed in the content of organic acids. The mass fraction of lactic acid in alfalfa silos was 41.7%, and was minimal in comparison with other silos. The maximum index of 77.9% of the proportion of lactic acid in the total amount of organic acids was recorded in alfalfa silos with the addition of fireweed (Chamerion anqustifolium L.) 15% of the weight of alfalfa, while there was no oily acid. Alfalfa silos with SILA-PRIME bioconservant had a proportion of 62.3% lactic acid and was of good quality, as was silos with the addition of fireweed. Alfalfa silos in its pure form without additives had a pH of 4.96 and was of poor quality. In terms of feed value, the feed with the addition of fireweed was the best in terms of the content of exchange energy of 10.6 MJ /kg of dry matter. Therefore, we believe that the addition of fireweed in a dose of 15% by weight of alfalfa during its silos is economically feasible.

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