Degradabilidade da matéria seca e da proteína bruta de grãos secos e de silagens de grãos úmidos de híbridos de milho (Zea mays), submetidos a diferentes processamentos

• Main Author: Reis, Wagner dos
• Publication Date: 2013
• Other Authors: Costa, Ciniro [UNESP], Meirelles, Paulo Roberto de Lima [UNESP], Silva, Marina Gabriela Berchiol da [UNESP], Factori, Marco Aurélio [UNESP], Hadlich, Janaána Conte [UNESP], Oliveira, Kátia de [UNESP], Santana, Erikelly Aline Ribeiro de [UNESP], Pariz, Cristiano Magalhães [UNESP], Silva, Josineudson Augusto II de Vasconcelos [UNESP]
• Format: Article
• Language: por
• Source: Repositório Institucional da UNESP
• Download full: http://www.iz.sp.gov.br/pdfsbia/1389723086.pdf; http://hdl.handle.net/11449/137073
• topic: High moisture grain; Ruminal degradability; Particle size; Nutritive value; Silagem de grãos úmidos; Degradação ruminal; Granulometria; Valor nutritivo

The objective of this work was to evaluate the effect of processing two corn hybrids conserved, dry and humid grains, the dry matter (DM) and crude protein (CP) degradability in situ. The particle size was determined and difference was verified in MGD (Medium Geometric Diameter) of processed ingredients. Three sheep were used with rumen canulated, in a completely randomized design, using a factorial outline 2 x 2 x 3, being two corn hybrid, two conservation methods and three processing forms (whole, coarsely and finely ground), with five times of incubation (3, 6, 12, 24 and 48 hours). The fraction A in SDC (silage of dent corn) of DM was superior to GDC (grain of dent corn) in all of the particles size. The ensiling process increased the DM solubility, reducing the fraction B in comparison to dry grain. The values regarding the fractions DP and DE the 5% per hour of the protein, were larger for SDC and GDC, it presents a decreasing when the incubation time advances. The fermentation rate was superior for SDC and GDC. The ensiling process has positive effect in the decreasing of DM and CP in comparison to GDC.