Chemical and bromatological characteristics of elephant grass silages with the addition of dried cashew stalk
Nenhuma Miniatura disponível
Data
2010-01-01
Autores
Rêgo, Margareth Maria Teles
Neiva, José Neuman Miranda
do Rêgo, Aníbal Coutinho [UNESP]
Cândido, Magno José Duarte
de Souza Carneiro, Maria Socorro
Lôbo, Raimundo Nonato Braga
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
The objective of this study was to evaluate the nutritive value of elephant grass (Pennisetum purpureum, Schum.) silages with the addition of 0, 4, 8, 12 and 16% dried cashew stalk (Anacardium occidentale L.) - DCS, based on the fresh matter. A randomized complete design with four replications was used. Twenty 210 L plastic drums were used as experimental silos. The levels were determined of the dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), hemicellulose, ether extract (EE), total carbohydrates (TC), non-fibrous carbohydrates (NFC), neutral detergent insoluble nitrogen (NDIN,% total N), acid detergent insoluble nitrogen (ADIN, % total N), pH values, ammonia nitrogen (in percentage of the total nitrogen, N-NH3, % total N), lactic acid, acetic acid, butyric acid and propionic acid. Adding DCS resulted in higher values of DM, CP, EE, NFC, NDIN (% total N), ADIN (% total N), pH, lactic acid and propionic acid. On the other hand, with increasing DCS levels, a linear decline was observed in values of NDF, ADF, hemicellulose, ammonia nitrogen (% total N) and butyric acid. DCS did not show effect on the TC and acetic acid in the silages. As a result, up to 16% dehydrated cashew stalk may be added to elephant-grass silages, based on the fresh matter, to increase CP and NFC levels and decrease NDF and ADF and improve the fermentation patterns. It should be taken into account that higher NDIN and ADIN values may interfere in nitrogen availability and therefore in further DM intake. © 2010 Sociedade Brasileira de Zootecnia.
Descrição
Palavras-chave
Anacardium occidentale, Fermentation, Industrial by-products, Nutritive value, Pennisetum purpureum
Como citar
Revista Brasileira de Zootecnia, v. 39, n. 2, p. 255-261, 2010.