Composição química e produção forrageira de três variedades de capim-elefante
Palavras-chave:
rebanho bovino, produção forrageira, capim-elefante, teor proteina, sistemas corteResumo
This experiment was conducted at Universidade Rural do Estado de Minas Gerais, Vigosa, in a loamy, acid and low fertility soil. The purposewas to study the influence of frequency of cutting upon the yield and chemical composition of three varieties of elephantgrass (Pennisetum purpureum Schum.).
The intervals of cutting studied were 28, 56 and 84 days.
Data are presented on dry matter, crude protein and cellulose content and the herbage yield as expressed in terms of kilos of dry matter and crude protein, per hectare.
The elephantgrass varieties cut at 28 day intervals had a higher crudeprotein and a lower cellulose content compared to the 56 and 84 day cuttings. However, the 28 day interval cutting resulted in the lowest herbage yield and this frequency of cutting also reduced the stand, The clipping of elephantgrass at 84 day intervals was apparently the most desirable when considering herbage yield and vigor, even though the forage produced was relatively low in protein and high in cellulose, Theaverage crude proteinand cellulose content of the varieties of elephantgrass when cut at the ages of 28, 56 and 84 days were: 20.4 and 28.0%, 14. 2and 31.8%and 9.3 and 37.1%, respectively.
Referências
ASSOCIATION OF OFFICIAL AGRICULTURAL CHEMISTS. Official Methods of Analysis. 10th ed. Washington, D. C., 1965. 957 p.
BRASIL, Instituto Brasileiro de Geografia e Estatística. Anuário Estatístico do Brasil, Rio de Janeiro, 1963, 422p.
CHANDLER, J. V., SILVA, S. e FIGARELLA, J. Effects of nitrogen fertilization and frequency of cutting on the yield and composition of Napier Grass in Puerto Rico, J. Agric. Univ. , P. Rico 43(4):215-227. 1959.
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EMRICH, E.S. e FRANCO, E. Mineiro descobriu um bom capim, O Dirigente Rural, Sao Paulo, 4(11): 24- 25, 1965.
FONSECA, J.B., CAMPOS, J. E CONRAD, J.H. Estudo de Digestibilidade de Forrageiras Tropicais pelo processo Convencional, Experientiae, Viçosa 5(3):43-68. 1965.
FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS. Production Yearbook, Rome, 12;: 13-190. 1962.
LENCKEIT, N. e BECKER, N. Inspeção e Aprecião de Forrageiras, Lisboa, Ministério da Economia de Portugal, 1956. 152p. |Boletim Pecuário n 2|.
PATTERSON, D.D. The influence of time of cutting on the growth, yield and composition of tropical fodder grasses “Elephantgrass. J. Agric. Sci,, London. 24 615-641. 1933.
SILVA, D.J., CAMPOS, J. e CONRAD, J.H. Da Disgestibilidade "In Vitro" de Algumas Forrageiras Tropicais. Rev. Ceres, Viçosa 12(68): 63-100. 1964.
ZÚNIGA, M. P., SYKES, D.J. e GOMIDE, J. A. Produção de Onze Gramíneas para Capineiras, em Viçosa, MG. Resultados Preliminares. Rev. Ceres, Viçosa 12(71): 315-331. 1965.
WILSIE, C.R., AKAMINE, E.K. e TAKAHASHI, M. Effect of frequency of cutting on the growth, yield and composition of Napier grass. J. Amer, Sco. Agron., Wisconsin 32 (4): 266-273. 1940.
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