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O trabalho objetivou avaliar o efeito de diferentes alturas do pasto (24cm e 26cm; 43cm e 45cm; 52cm e 62cm; 73cm e 78cm) e períodos de avaliação (28, 56, 84 e 112 dias) em capim-Tanzânia (Panicum maximum Jacq. cv. Tanzânia - 1) nos teores de proteína bruta (PB), fibra em detergente neutro (FDN), fibra em detergente ácido (FDA), digestibilidade in vitro da matéria seca (DIVMS), Ca, P, K e Mg nas porções lâmina e colmo. Foram utilizados novilhos da raça Nelore (em pastejo contínuo) com taxa de lotação variável pela técnica put and take. O delineamento experimental utilizado foi inteiramente casualizado com 2 repetições. O aumento na altura de manejo provocou redução dos teores de PB e aumento dos níveis de FDA e FDN nas lâminas e nos colmos. As melhores alturas de manejo, de acordo com os resultados relativos à qualidade da forragem, variaram de 40cm e 60cm. The objective of this research was to evaluate the effect of different pasture heights (24cm and 26cm; 43cm and 45cm; 52cm and 62cm; 73cm and 78cm) and sampling periods (28, 56, 84 and 112 days) in Tanzania grass (Panicum maximum Jacq. cv. Tanzânia - 1) on content of crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), in vitro dry matter digestibility (IVMD), Ca, P, K and Mg on leaf blade and stem part. Nelore steers were used (in continuous grazing) with variable stocking rates, using put and take technique. The experimental design was completely randomized, with two replications. The increments on the pasture height decreased CP content and increased ADF and NDF contents, both to the leaf blade and to the stems. The leaf blade quality was also influenced by different sampling times. The best pasture management height according to forage quality were between 40cm to 60cm

Valor nutritivo do capim-Tanzânia (Panicum maximum Jacq cv. Tanzânia-1) manejado em alturas de pastejo