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Bromatological characteristics of Guinea grass (Panicum maximum cv. Likoni) in a silvopastoral system with leucaena (Leucaena leucocephala cv. Peru)



Bromatological characteristics of Guinea grass (Panicum maximum cv. Likoni) in a silvopastoral system with leucaena (Leucaena leucocephala cv. Peru)



Cuban Journal of Agricultural Science 42(3): 289-292



The bromatological performance of the herbaceous stratum (80 % of Guinea grass) in areas of a silvopastoral system Lencaena leucocephalal Panicum maximum, sown in 1995, 1996, 1997, and 1998, was Studied during the period between 2000 and 2002. The design was complete random. The indicators were: percentage of dry matter (DM), Crude protein (CP), crude fiber (CF), ashes, and digestibility of the organic matter. The results showed decline (P < 0.001) for the DM percentage, with higher time of exploitation of the silvopastoral area. There was stability in the seasons, in both climatic periods, during the sowing in 1995. The protein content ill Guinea grass increased significantly with the highest values (12.2, 11.35, 10.68, and 7.56 %) during the rainy season of 2002, for the sowings in 1995, 1996, 1997, and 1998, respectively. However, in the area with lower time of exploitation (1998), the DM percentage did not show differences compared with the sampling during the dry season in 2002. There was decline (P < 0.001) in the CF percentages between the rainy season in 2000 and ill 2002, for the sowings in 1995 and 1996. This effect was not seen ill the sowings in 1997 and 1998. The digestibility was higher (P < 0.05) with the evolution of the system in the sowing in 1995 (52.97 vs 54.80 %), when comparing the two samplings in the rainy season. In the rest of the sowing years, there were only seasonal differences. It is concluded that, with the evolution of the silvopastoral system, there is important stability ill the bromatological characteristics of Guinea grass, which are reflected markedly up to 811 year of exploitation. The presence of leucaena in the system affected the chemical performance of Guinea grass by improving its quality in both climatic periods.

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