Abstract

HOMEN, Manuel; ENTRENA, Ignacio; ARRIOJAS, Luís  and  RAMIA, Mauricio. Biomassand nutritive value of Guinea grass Megathiyrsus maximus (Jacq) B. K. Simon & S. W. L.Jacobs ‛ Gamelote’ in different periods of the year in an area of Humid Tropical Forest of Barlovento, Miranda State. Zootecnia Trop. [online]. 2010, vol.28, n.2, pp.255-266. ISSN 0798-7269.

The test was conducted at the Experimental Station of Black River from the Universidad Nacional Experimental Simón Rodríguez, located in the town of Black River County Acevedo Miranda state area for a life of tropical rain forest. The floor is open texture, pH 6,0, low-N, P and K and high in Mg, with a rainfall of 2.450 mm and average annual temperature of 26,5 º C. With the aim of assessing the biomass and nutritional value of forage grass cultivation Megathyrsus maximus ‛Gamelote’, six harvest ages (21, 28, 35, 42, 49 and 56 days). The variables were Biomass Dry Matter (MSB), height (A), leaf: stem (L / T), crude protein (CP), Degradability of dry matter (DMS), content of phosphorus (P) and Calcium (Ca). Employment is a block design with three replications randomly split plot arrangement. The effect of the period of the year and the age of the plant had significant effects on the production of MSB, M and H: T. The average biomass in the dry periods of high precipitation from 42 to more than 5.000 Kg.MS / ha. The ratio L / T decreases with increasing age of plant performance was equal to the contents of the PC to be above the critical value of 7% for all ages. P content decreased with the increase in age beyond the minimum level of 0,18%, just like Ca feed. The DMS decreases with increasing age ranging from 71 to 54%. Grass Megathyrsus maximus is a good potential for biomass production and nutritional value to animal feed in the soil and climatic conditions of Black River, Acevedo Municipality. Miranda State.

Keywords : Megathyrsus; Panicum; grass; season; age; dry matter standing crop; nutritive value; Humid Tropical Forest.

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