Resumen

SANCHEZ, Alexander  y  FARIA MARMOL, Jesús. Effect of plant maturity on the nutrient content and digestibility in a partnership Cenchrus ciliaris - Leucaena leucocephala. Zootecnia Trop. [online]. 2013, vol.31, n.1, pp.50-56. ISSN 0798-7269.

To evaluate the effect of age on crude protein (CP), in vitro digestibility of organic matter (IVOMD) and mineral concentration, of pasture Cenhrus profile. ciliaris (Cc). - Leucaena leucocephala (Ll) association, a study was conducted in a semiarid region of Zulia state. Four ages of shear were evaluated (42, 84.126 and 168 days), subdividing the profile into three strata pasture Cc: 0-15, 15-30, over 30 and Ll: 0-60, 60-120, over 120 height respectively. A randomized block design with comparison of means by Duncan (P<0.05) was used to analyze data. The average percentage of PC found was 8.34 and 22.50% in the Cc and Ll respectively, showing the greatest tenors in the middle and top of the plant. The IVOMD increased in the upper third of the grass and in the lower two thirds of the legume. Macrominerals levels in the Cc, recorded was below established critical ranges and were affected in different manner by both maturity and profile of the plant. In the LL, no signs of deficiency in essential macronutrients, with the exception of P and Na and they were not affected by the maturity of the plant through their profile.

Palabras clave : leucaena; buffel; profile plant; crude protein; digestibility; mineral concentration.

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