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Efeito de fontes de fósforo sobre a digestibilidade “in vitro” da matéria seca, da matéria orgânica e nutrientes digestíveis totais do capim- Mombaça (Panicum maximum Jacq. Cv. Mombaça)

2008; UNIVERSIDADE ESTADUAL DE LONDRINA; Volume: 29; Issue: 1 Linguagem: Inglês

10.5433/1679-0359.2008v29n1p211

ISSN

1679-0359

Autores

Fábio Jacobs Dias, Clóves Cabreira Jobim, Antônio Ferriani Branco, Carlos Antônio Lopes de Oliveira,

Tópico(s)

Growth and nutrition in plants

Resumo

The trial was performed to evaluate the effect of phosphorus sources on forage mass quality of Mombaça grass (Panicum maximum Jacq. cv. Mombaça), according to in vitro dry matter and organic matter digestibility and TDN concentration. Every month, samples of available forage mass were taken, from December, 2002 until April, 2003. The treatments were three phosphate sources (1-YoorinÆÊ magnesium thermophosphate; 2-GafsaÆÊ natural phosphate; 3-simple superphosphate + triple superphosphate) and the control (no fertilizer). They were arranged in a randomised block design with three replications. It was used 12 plots sized from 0,7 to 1,0 hectare, which were delimited by two-line eletric fence. The grazing method was continuous stocking and variable stocking rate (“put-and-take”). The IVDMD, IVOMD and TDN coefficients decreased along sampling period. IVDMD, IVOMD and TDN concentration didn’t show significantly differences among treatments (P>0.05).

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