Effect of wilting on the quality of chemically evaluated elephant grass cultivar cameron pennisetum purpureum schumach. and pearl millet pennisetum americanum l. leeke silages

Machado-Filho, L.C.P.; Muhlbach, P.R.F.

Revista da Sociedade Brasileira de Zootecnia 15(3): 224-233


Accession: 005283051

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Elephant grass cv. Cameron (C) and pearl millet silages (M) were chemically evaluated. The forages of C and M, directly cut or wilted for 50 h, were ensiled in pilot silos in a 2 .times. 2 factorial arrangement in a completely casualized experimental design, with 3 repetitions. Wilting raised the DM content of C from 19.1 to 29.6% and of M from 16.0 to 31.0%. Wilted silages did not have different pH values, but these same values were bigger for the C silages (4.5) than M silages (4.1). Average lactic acid contents in M and silages were respectivelly 4.28 and 3.03% of DM. Acetic and iso-valeric acids were higher in C (1.64 and 0.50% of DM) than in M silages (1.13 and 0.18% of DM). Wilting of both silages reduced average lactic acid content from 4.88 to 2.42% of DM, but raised iso-valeric acid from 0.19 to 0.49%. N-NH3 (as % of total N) raised by wilting from 7.81 to 12.5%, being higher in C (12.1%) than in M (8.27%) silages.