In situ degradability of Mombaça grass strata with different sources of phosphorus under grazing - DOI: 10.4025/actascianimsci.v31i1.4226

• Autor(a) principal: Barbero, Leandro Martins
• Data de Publicação: 2009
• Outros Autores: Cecato, Ulysses, Zeoula, Lúcia Maria, Damasceno, Júlio Cezar, Rodrigues, Augusto Manoel, Gomes, José Augusto Nogueira
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Acta Scientiarum. Animal Sciences (Online)
• Texto Completo: https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/4226
• topic: dry matter potential and effective degradability; crude protein effective degradability; degradabilidade potencial e efetiva da matéria seca; degradabilidade efetiva da proteína bruta; 5.04.00.00-2

This work was carried out with the objective of determining the degradability of strata of Panicum maximum Jacq cv. Mombaça. The experiment consisted of a random design with split-plot, with three repetitions. The treatments were phosphorus sources: Yoorin® and simple super phosphate + triple super phosphate and Control (without phosphorus) and three pasture strata: 20-40; 40-60 and above 60 cm. In the treatments with phosphorus, 140 kg ha-1 of P2O5 was applied to the planting. After collection of the vegetative material, it was taken to the laboratory and separated into leaf lamina and stem + sheath fractions. After drying and grinding (5 mm) of the fractions, they were incubated in castrated male bovines, for the periods of 96, 48, 24, 6 and 0 hours. The phosphorus sources did not modify the dry mass, crude protein, potential and effective degradability (2, 5, 8% of flow rate) of Mombaça grass. In the strata, the dry matter and crude protein degradability of fractions a, b and c and the potential and effective dry matter degradability and effective crude protein degradability was higher in the strata (above 40 cm).