Diurnal vertical and seasonal changes in non-structural carbohydrates in Marandu palisade grass

Autor(es)

De Oliveira, F. C. Leite ^[1] ; Sanchez, J. M. D. ^[2] ; Vendramini, J. M. B. ^[2] ; Lima, C. G. ^[3] ; Luz, P. H. C. ^[1] ; Rocha, C. O. ^[1] ; Pereira, L. E. T. ^[1] ; Herling, V. R. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Anim Sci, Coll Anim Sci & Food Engn FZEA USP, BR-13635900 Pirassununga, SP - Brazil

^[2] Univ Florida, Range Cattle Res & Educ Ctr, Ona, FL 33865 - USA

^[3] FZEA USP, Dept Basic Sci, BR-13635900 Pirassununga, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF AGRICULTURAL SCIENCE; v. 156, n. 3, p. 457-464, APR 2018.
• Citações Web of Science: 0

Resumo

Forage is the primary feed source for livestock in tropical regions and energy is one of the most important nutrients for ruminant nutrition. The effects of harvest management of Marandu palisade grass (Brachiaria brizantha cv. Marandu Syn. Urochloa brizantha cv. Marandu) on non-structural carbohydrate (NSC) concentrations were evaluated. A plot (Experiment 1) and a greenhouse study (Experiment 2) were conducted in 2013-14. In Experiment 1, treatments were the factorial arrangement of two harvest times and two vertical canopy layers (upper and intermediate), distributed in a completely randomized design with five replicates. In Experiment 2, treatments were the factorial arrangement of six harvest times and two morphological fractions (leaf blade and pseudostem). In both experiments, NSC concentration increased during the day. Upper and intermediate canopy layers had greater NSC concentration at 15.00 than 06.00 h during spring and summer. In addition, the magnitude of NSC increase was greater in the upper than intermediate canopy layer and in spring than summer. Marandu palisade grass shows greater digestibility in the afternoon than morning, representing an opportunity to optimize energy concentration through harvest management. (AU)

• Processo FAPESP: 12/03121-0 - Efeitos da variação diurna do valor nutritivo do pasto e do momento de início da desfolha no desempenho animal
• Beneficiário: Fábio Cortez Leite de Oliveira
• Linha de fomento: Bolsas no Brasil - Doutorado
• Processo FAPESP: 12/05912-5 - Efeitos da variação diurna do valor nutritivo do pasto e do momento de início da desfolha no desempenho animal
• Beneficiário: Valdo Rodrigues Herling
• Linha de fomento: Auxílio à Pesquisa - Regular