Production and chemical composition of forages de dos species of grass Elephant (Pennisetum sp.) in Noroccidente de Venezuela
2011
The objective of the investigation was to evaluate the effect of
cultivar and the age of maturity or harvest on the chemical composition
and the yield in two species of Grass elephant Pennisetum sp. (Green
and Purple), under conditions of very dry tropical forest West of
Venezuela. The experiment was carried out in a cultivated area of
approximately one year of established, sowed in arrays to 1,00 m of
separation, of which an experimental area of 1.170 m2 (90 x 13) was
selected, for the investigation. The experimental design was factorial
5 x 2, with 2 cultivars and 5 ages of maturity or it harvests (14, 28,
42, 56 and 70) days, with three repetitions, to measure its effect on
the partially dry matter variable (MS), gross protein (PB), fiber
neutral detergent (FND), fiber acid detergent (FAD), lignina acid
detergent (LAD), ash (CZ), yield of green matter (RMV) and yield of dry
matter (RMS). High potentiality of production of biomass was observed
for both cultivars, of which cultivating green elephant resulted
superior with a (P <0,01) cultivating green elephant with yields
averages of 10,2 t/ha MS, while the best values (17,1%) in PB were
contributed by cultivating lived elephant. For the components alone
cellular wall there was answer for FND with values of 55,7% for
cultivating green elephant. The parameters of chemical composition and
yield increased with the age of maturity, while the protein contents
and ash diminished. The grass elephant (Pennisetum sp) like court
grass, show a high potential for the production and quality of biomass,
however as any tropical grass, it reduces their nutritious value with
the age of maturity, that which requires of the establishment of
handling strategies for their efficient use during the year.
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