Chemical composition and digestibility of the ammoniated hays

Revista Brasileira de Zootecnia

Ruggieri, Ana Cláudia²  Pereira, João Ricardo Alves¹  Reis, Ricardo Andrade³  Rodrigues, Luis Roberto de Andrade³ 

[1] Universidade Estadual de Ponta Grossa, Ponta Grossa;Instituto de Zootecnia, Sertãozinho;Universidade Estadual Paulista, Jaboticabal

关键词: ammoniation;    chemical composition;    digestibility;    hays;    tropical grasses;    urea   IntroduçãoA produção de fenos de gramíneas forrageiras tropicais de alta qualidade;    durante a estação chuvosa;    é dificultada pela incidência de chuvas durante a secagem a campo;   

DOI  :  10.1590/S1516-35982001000300009

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

- The experiment was conducted to evaluate the changes on the chemical composition and in vitro dry matter digestibility (IVDMD) of the Brachiaria decumbens Stapf, Brachiaria brizantha (Hochst ex. A. Rich) Stapf, jaragua (Hyparrhenia rufa Ness Stapf) hays, harvested following the seed ripening stage and treated with anhydrous ammonia (3.0% DM) or urea (5.4% DM). The data showed that anhydrous ammonia and urea decreased NDF and hemicellulose contents with the same efficiency. The treatments did not change ADF, cellulose, and lignin contents. It was observed an increase in the nitrogen as compounds, TN and ADIN due to the ammoniation. The ADIN/TN ratio was reduced due to the ammoniation. The IVDMD increased due to the changes observed in the chemical composition of the fiber, and the increase of the readily digestible nitrogen of the hays.

【 授权许可】

CC BY-NC