Chemical composition and crude protein fractions of Coastcross grass under grazing on winter, spring and summer in Southern Brazil

Antonio  Ferriani Branco; Keila  Bianchin Viana; Román David  Castañeda; Paulo Emilio  Prohmann; Sabrina   Marcantonio Coneglian; Gisele Fernanda   Mouro

Chemical composition and crude protein fractions of Coastcross grass under grazing on winter, spring and summer in Southern Brazil

Autores

Antonio Ferriani Branco

Keila Bianchin Viana

Román David Castañeda

Paulo Emilio Prohmann

Sabrina Marcantonio Coneglian

Gisele Fernanda Mouro

Editor

Universidade Estadual de Maringá

Descripción

The objective of this study work was to assess crude protein fractions in structural components (leaves, stem and dead material) of Coastcross grass ( Cynodon dactylon (L.) Pers) under grazing, on winter, spring and summer seasons, in the Northwestern of Paraná , South of Brazil. Were determined CP, NDF, ADF contents and protein fractions, A, B1, B2, B3 and C. Th e analysis of CP showed great differences among months, but there was no difference among seasons. NDF and ADF in the stem were lower (p < 0.05) during the spring. The season did not affect (p > 0.05) protein fractions A, B1, B2, B3 and C of leaves . However, it was observed that the highest proportions of CP were B3 and A frac tions. For the stem, the mo st important crude protein fraction is A, and it was observed that B1 fraction was lowest (p < 0.05) in the spring. Considering crude protein fractions of the Coastcross grass, in this study conditions, we can conclude that Coastcross grass presents adequate protein value for beef cattle production on pasture.