Possibilities of covering the requirements of minerals from grasslands in nutrition of dairy cows
1999
Holubek, R. | Holubek, I. (Slovenska Polnohospodarska Univ., Nitra (Slovak Republic))
The problem of the contents of minerals and their comparison with standardised need by dairy cows were studied in semi-natural grassland (TTP), tillage recovered grassland (DTP) and additionally sown grassland (PTP). Differences in the quality of feed from TTP, PTP and DTP are not significant in view of their mineral composition from which follows that additional sowing and radical regeneration of some grass species and legumes does not solve the situation, only it is slightly improved. Mg and Ca contents in hay dry matter create prerequisites for cover of the need of minerals in feed ration for maintenance and 10-12 1 milk production.
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