%0 Journal Article
%T CHEMICAL COMPOSITION OF FOUR FORAGE SORGHUM HYBRIDS UNDER COMPOSI  O BROMATOL¨®GICA DE QUATRO H¨ªBRIDOS DE SORGO FORRAGEIRO SOB DOSES DE NITROG¨ºNIO
%A R¨¦gis De Paula Oliveira
%A Aldi Fernandes de Souza Fran£¿a
%A Alzira Gabriela Da Silva
%A Eliane Sayuri Miyagi
%J Ci¨ºncia Animal Brasileira
%D 2009
%I Universidade Federal de Goi¨¢s
%X The chemical composition of four forage sorghum hybrids was evaluated under three doses of nitrogen (N). The experimental design was in randomized blocks in a 4x3 factorial scheme with four repetitions. Dry matter (DM), crude protein (CP), soluble carbohydrates (SCs), neutral detergent fiber (NDF), acid detergent fiber (ADF), hemicellulose (Hem) and lignin (Lig) were determinate through Spectrophotometry of Reflectance in Proximal Infrared. The dates were analysed for SISVAR 4.6 program comparing average by Tukey test 5% probability. The DM contents differed (P<0.05) between N doses and varieties in the first cut (21.1% to 28.7%). The PB tenors (6.4% and 7.5%) and lignin (Lig) didn¡¯t differed (P>0.05) among varieties and N doses, both cuts. The SCs ranged between doses in the first cut and the varieties in the second cut (13.7%). The ADF and NDF tenors didn¡¯t differed (P>0.05) in N doses in both cut, however the varieties showed difference. The Hem differed between varieties and N doses. The hybrids evaluated presented adequate chemical compositions regarding the process of ensilaging.   KEY WORDS: Crude protein, nitrogen fertilization, fibers, Shorgum bicolor and soluble carbohydrates. Avaliou-se a composi  o bromatol¨®gica de quatro h¨ªbridos de sorgo forrageiro sob doses de nitrog¨ºnio (N). Utilizou-se o delineamento de blocos casualizados em esquema fatorial 4 x 3, com quatro repeti  es. Foram determinados os teores de mat¨¦ria seca (MS), prote¨ªna bruta (PB), carboidratos sol¨²veis (CHOs), fibra em detergente neutro (FDN), fibra em detergente ¨¢cido (FDA), hemicelulose (Hem) e lignina (Lig), de acordo com a t¨¦cnica da espectrofotometria de refletancia no infravermelho proximal. Analisaram-se os dados pelo programa SISVAR 4.6, testando-se os fatores pelo teste Tukey a 5% de probabilidade. Os valores de MS diferiram (P<0,05) em fun  o das doses de N e entre os h¨ªbridos avaliados no primeiro corte (21,1% a 28,7%). Os teores de PB (6,4% e 7,5%) e Lig n o diferiram (P>0,05) entre os h¨ªbridos e doses de N, em ambos os cortes. Os CHOs apresentaram varia  o entre as doses no primeiro corte e entre os h¨ªbridos no segundo corte (13,7%). Os teores de FDN e FDA n o diferiram (P>0,05) em fun  o das doses de N em ambos os cortes, entretanto houve diferen a entre os h¨ªbridos. A Hem diferiu entre os h¨ªbridos e as doses de N. Os h¨ªbridos avaliados apresentaram boas composi  es bromatol¨®gicas, para o processo de ensilagem. PALAVRAS-CHAVES: Aduba  o nitrogenada, carboidratos sol¨²veis, fibras, prote¨ªna bruta e Shorgum bicolor.
%K Forragicultura
%U http://www.revistas.ufg.br/index.php/vet/article/view/541