Lyashuk I. Comparative evaluation of the effectiveness of different regulation systems in feeding cows

The object of research: cows Ukrainian black and white and red and white dairy breeds with different performance ration of cows and Ukrainian standards (2009), USA (NRC, 2001), Russia (2003) and English (FiM 2004). The purpose of research: theoretical, experimental and practical assessment of the effectiveness of different standards of regulation and feeding developed in Ukraine (2009), the US NRC (2001), Russia (2003) and England FiM (2004) for cows with different levels of milk production within all phases of lactation. Methods: zootechnical, chemical, biochemical, statistics and economic. Scientific novelty: For the first time in a long experiment, conducted a comparative assessment of the first national nutrition standards, compared to US standards (NRC, 2001), Russian (2003) and English (FiM 2004). First proposed norms of feeding cattle and cows in particular, developed on the basis of domestic scientists factorial approach through concentration of energy and nutrients in dry matter, taking into account the phase feeding. They include valuation indicators such as the concentration of metabolizable energy in 1 kg of dry matter fractions fissionable and non-degradable in the rumen protein, essential amino acids, and neytralnodeterhentnoyi kyslotnodeterhentnoyi fiber, amino acids, B vitamins and some trace elements in feeding highly productive cows. The degree of implementation: the results obtained in introduced in terms of LLC "Crystal 2" town. Great Bagachka Poltava region. Scope: farms that keep cattle dairy productivity.