Features of milk production of the Red Steppe breed cows when using lactulose-containing feed additives

Introduction. Over the past decades, one of the main tasks solved by the Russian livestock industry has been increasing the production of dairy and meat raw materials, as a guarantor of the country's food security. An important role is given to domestic breeds of cattle, which include the Red Steppe breed, since it has not only a unique adaptability to local environmental conditions, but also a long period of economic use. In this regard, it seems relevant to study the possibility of increasing its productivity and quality indicators of milk by including lactulose-containing additives in the diets of lactating cows.

Object. Red Steppe cows.

Materials and methods. The experiment was carried out on three groups of cows (control and two experimental), each of which consisted of 15 heads. The total number of animals in the experiment was 45. Animals included in the first group (control) received the basic diet (BD). Cows of the second group received BD + "Laktuvet-1" at a dose of 0.5% by weight of concentrated feed, and their peers of the third group received BD + "LactuSuper" – 0.5% by weight of concentrated feed. The experiment was carried out over a period of 194 days.

Results and conclusions. Feed additives "Laktuvet-1" and "LaktuSuper" have shown high efficiency in increasing milk production, improving metabolic processes occurring in the body of animals, and their physiological state. Cows receiving these additives produced on average, 1 liter more milk daily; their milk contained significantly more dry matter, total protein, and casein. The introduction of feed additive “LactuSuper” into the diets of lactating cows made it possible to obtain more cottage cheese from their milk compared to group I by 6.14% (Р≤0,01) and group II – by 3.89% (Р≤0,05) with minimal milk expenditure.

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