Effective use in the diet of dairy cows corn silage with the introduction of a new biological preservative

In 2014 and 2015, under laboratory conditions, we established the optimum dose of a new biological preservative in the amount of 3 g/t of feed during siloing of corn in the milk-wax stage of ripeness with a moisture content of 70-75%, the dose helped to reduce losses of dry matter and protein by 2.5 and 2.2 times, respectively, in comparison with the control. For validation of the results, there was prepared corn silage in the milk-wax stage of ripeness with the addition of the new biological preservative in the amount of 3 g/t of feed, the test was carried out in Roscha LLC, Bazarno-Karabulaksky district, Saratov region. The new biological preservative (developed by Fermlab LLC) contained the following bacteria: Lactobacillus plantarum ВКМ В-3055D; Lactococcus lactis subsp. lactis ВКМ В-3056D; Propionibacterium acidipropionici ВКМ Aс-2769D with the total content of 1x10¹¹ CFU/g. In the corn without biological preservative, the value of active acidity (pH) decreased, after a month of storage it reached 3.8 units. The content of butyric acid in the silage with automatic preservation was 0.03%, which was a result of protein putrefaction due to the high buffering. The silage with the new biological preservative after 30 days of storage was much better than the silage with automatic preservation: pH -4.1, total amount of organic acids - 2.80%, the content of lactic acid in the total amount of acids - 2.10%, acetic acid - 0.70%, no butyric acid, the content of lactic and acetic acids in the total amount of acids - 75 and 25%, respectively. The test on milk cows (N = 50, n = 25) showed that the silage with the preservative led to an increase in the average daily milk yield of 3.4% fat by 6.7% in comparison with the control. Morphological, biochemical indicators of the blood taken form the tested cows showed an improvement of anabolic processes, which ensured an increase in the milk production. Profit from the sale of milk from the cows of the test group amounted to 3,325.5 rubles after deducting the costs of purchasing the biological preservative.

консервирование, силос, биологический консервант, молочная продуктивность, морфологические и биохимические показатели крови, прибыль, canning, silage, biological preservative, milk productivity, morphological and biochemical indicators of blood, profit

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