Nutritional evaluation of elephant-grass silages with byproduct of annato

Revista Brasileira de Zootecnia

Margareth Maria Teles Rêgo¹  José Neuman Miranda Neiva¹  Aníbal Coutinho Do Rêgo²  Magno José Duarte Cândido¹  Rossana Herculano Clementino¹  João Restle¹ 

[1] ,UNESPJaboticabal

关键词: Bixa orellana;    ensilage;    nutritive value;    pennisetum purpureum;    tropical grass;    Bixa orellana;    ensilagem;    gramíneas tropicais;    valor nutritivo;   

DOI  :  10.1590/S1516-35982010001000026

来源: SciELO

【 摘 要 】

The objective of the present study was to evaluate the nutritional value of elephant-grass silages containing annato byproduct. Twenty intact rams were distributed in a complete randomized block design with five diets (0; 4; 8; 12 and 16% annato byproduct in the silage) and four replications and used to estimate the intake, apparent nutrient digestibility, content of total digestible nutrients and nitrogen balance. The addition of annato byproduct raised the intakes of dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), ether extract (EE), total carbohydrates (TC), non-fibrous carbohydrates (NFC) and total digestible nutrients (TDN), in body weight (%BW) and in metabolic weight (g kg-1BW0.75). The digestibilities of DM (55.95%), OM (58.19%), CP (45.34%), NDF (52.79%), ADF (45.79%), EE (34.96%) and NFC (99.86%) were not influenced by the addition of annato byproduct. The inclusion of annato byproduct in elephant-grass silage increased digestibility of total carbohydrates, the TDN content and the nitrogen balance. The aditions of annato byproduct at levels up to 16% of the elephant grass silage natural matter improves nutrient intake and nitrogen balance.

【 授权许可】

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