Chemical-bromatologic composition of coffee peel treated with anhydrous ammonia and sodium sulphide

[摘要] - An experiment was conducted to evaluate the effects of different combination of levels of ammonia (0.0, 2.2, 3.2, 4.2% by weight of dry matter) and sodium sulphide (0.0, 2.1, 3.1, 4.1%) on chemical-bromatologic composition and "in vitro" dry matter digestibility (IVDMD) of coffee peel with 30% of moisture. The crude protein (CP) content increased due to the crescent levels of anhydrous ammonia. The nitrogen retention (NR) decreased as the ammonia and sulphide levels increased. The contents of insoluble nitrogen in neutral and acid detergent related to the total nitrogen were reduced as levels of ammonia increased; however they were little altered by the addition of sodium sulphide. Although the application of anhydrous ammonia and sodium sulphide when combined have increased soluble nitrogen and reduced the hemicellusose contents, the changes were not sufficient to increase the IVDMD of coffee peel.

[学科分类] 兽医学

[关键词] amonniation;in vitro digestibility;agroindustrial residue   IntroduçãoA baixa produção de forragens no Brasil-Central;durante o período de abril a setembro;tem sido responsável;entre outros fatores;pela reduzida produtividade dos bovinos