Chemical composition of grass and forage trees mixed silages
An experiment was carried out to assess the nutritional value and quality of silages prepared from different combinations of grass and forage trees. Taiwan grass 144-A (Pennisetum purpureum) and four forage trees (Guazuma ulmifolia, Piscidia piscipula, Lisyloma latisiliquum, Albizia lebbeck) and a combination of the four trees were tested in a randomized design with factorial arrangement. Forage trees were included in the silage at 15, 30 and 45 % w/w fresh grass weight. Sugarcane molasses 4 % diluted in water (1:1 w/v) was added to ensure an adequate fermentation. Micro silages were prepared in 1.8 l plastic containers and opened after 90 d. Grass silage (0 % tree) was used as control. Differences were found (P0.05) for silage DM (27.8 vs 27.9 %), CP (7.2 vs 8.6 %), pH (3.88 vs 3.87), ammonia nitrogen/total nitrogen (7.5 vs 7.8 %), acetic acid (3.3 vs 2.9 %) and butyric acid (1.0 vs 0.4 %). It can be concluded that the inclusion of forage trees in tropical grass silages improves their quality but not their nutritive value. Differences in the chemical composition of these silages reflect variations in the proportion of each ingredient (% grass/tree).
| Main Authors: | , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias
2012
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| Online Access: | https://cienciaspecuarias.inifap.gob.mx/index.php/Pecuarias/article/view/1267 |
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