Chemical composition and nutritive value of legumes bred in Estonia
2002
Kaldmae, H. | Kirsel, R. | Vadi, M. | Kaert, O. | Bender, A. (Estonian Agricultural University, Tartu (Estonia). Inst. of Animal Science)
Comparison of the chemical composition and nutritive value of different varieties of red clover and hybrid lucerne bred in Estonia, revealed the following results. At the bud formation stage, the crude protein content of the tetraploid red clover variety 'Varte' was considerably higher (197 g/kg) and that of the crude fiber was lower (208 g/kg), compared with other varieties. Due to extremely low dry matter content, 122...130 g/kg at the stage of early flowering, the tetraploid red clovers should be wilted for ensiling or used as forages. The crude protein solubility of all the studied red clover varieties was slightly higher at the stage of early flowering, compared with the bud formation stage, whereas the hybrid lucerne varieties produced the opposite results. Considering this, it is recommended to use red clover as animal feed at the bud formation stage, and hybrid lucerne, however, at the stage of early flowering. The metabolizable energy content of the red clover (Trifolium pratence L. subvar. praecox Witte) and hybrid lucerne (Medicago varia Mart) varieties was 9.9...10.7.MJ/kg, respectively to the stage of herbage, the content of metabolizable protein was 73.9...84.3 g/kg, and the protein balance in the rumen was positive -3.0...58.0 g/kg. The red clover and hybrid lucerne varieties had high Ca content (12.7...19.2 g/kg), and relatively low P content (2.2...3.5 g/kg DM).
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