Canopy structure and tillering of Piatã and Marandu grasses under two grazing intensities with sheep

Authors

  • Carla Lailane Dias de Lima Universidade Federal do Rio Grande do Norte
  • Gelson dos Santos Difante Universidade Federal do Rio Grande do Norte
  • Kelen Cristina Basso
  • João Virgínio Emerenciano Neto Universidade Federal do Vale do São Francisco Colegiado de Zootecnia http://orcid.org/0000-0003-3060-9696
  • Denise Baptaglin Montagner Empresa Brasileira de Pesquisa Agropecuária, EMBRAPA Gado de Corte, Campo Grande
  • Rayssa Iris Galvão Vasconcelos Universidade Federal do Rio Grande do Norte
  • Thiago Felipe de Medeiros Trindade Universidade Federal do Rio Grande do Norte
  • Emmanuel Lievio de Lima Veras Universidade Federal do Rio Grande do Norte

DOI:

https://doi.org/10.14393/BJ-v33n1a2017-33943

Keywords:

Brachiaria brizantha, Forage mass, Pasture management, Semiarid, Tillers

Abstract

This study aimed to evaluate productive and structural parameters of Piatã and Marandu cultivars submitted to two grazing intensities. The experimental design was in randomized blocks with treatments in a 2 x 2 factorial arrangement (Marandu and Piatã palisadegrass x 25 and 30 cm residual heights). Intermittent stocking grazing method was used. Non-defined breed sheep were used as defoliation agents. Interaction between cultivars and height was not significant for any of the variables. In pastures managed at 25 cm post-grazing, a greater regrowth period was observed. Forage mass was on average 27% higher in Marandu palisadegrass in relation to Piatã palisadegrass, regardless of height. Dead material accumulation was higher in the Marandu cultivar. There was no difference in mass between the cultivars and heights for leaf blade or stem before and after grazing. The highest population density of tillers was observed in pastures lowered to 25 cm post-grazing height, with no difference between cultivars. In the third generation the appearance of tillers was higher in pastures managed at 25 cm. Post-grazing heights of 25 and 30 cm do not change pasture structure in Piatã and Marandu cultivars in pre-grazing; however, it is possible to obtain a shorter regrowth period if managed at 30 cm.

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Published

2017-02-09

How to Cite

LIMA, C.L.D. de, DIFANTE, G. dos S., BASSO, K.C., EMERENCIANO NETO, J.V., MONTAGNER, D.B., VASCONCELOS, R.I.G., TRINDADE, T.F. de M. and VERAS, E.L. de L., 2017. Canopy structure and tillering of Piatã and Marandu grasses under two grazing intensities with sheep. Bioscience Journal [online], vol. 33, no. 1, pp. 135–142. [Accessed25 May 2022]. DOI 10.14393/BJ-v33n1a2017-33943. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/33943.

Issue

Section

Agricultural Sciences