Abstract
The latest researches into ecologicity and adequacy of feeding systems for cows with production of more than 9500 kg milk have been carried out in Leningradskaya oblast’. The state of metabolic processes in the dairy cow organism is shown. The range of urea nitrogen in blood and milk has been identified to balance the diets for high and record producing dairy cows. A novel system of ecologically safe and economically profitable adaptive diets for high producing cows is proposed.
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Original Russian Text © L.V. Romanenko, V.I. Volgin, Z.L. Fedorova, E.A. Korochkina, 2015, published in Doklady Rossiiskoi Akademii Sel’skokhozyaistvennykh Nauk, 2015, No. 5, pp. 57–60.
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Romanenko, L.V., Volgin, V.I., Fedorova, Z.L. et al. Feeding strategies for reducing ammonia emissions in the north-west region of Russia. Russ. Agricult. Sci. 41, 485–489 (2015). https://doi.org/10.3103/S106836741506018X
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DOI: https://doi.org/10.3103/S106836741506018X