Selectivity, nutritive value and resistance to the psyllid insect of Leucaena leucocephala accessions

• Freddy Espinoza ^[1] ; Y. Díaz ^[1] ; Fanny Requena ^[1] ; Cesar Augusto Araque ^[2] ; E. Perdomo ^[1] ; L. León
  1. [1] INIA, Ceniap, Venezuela
  2. [2] INIA,Venezuela
• Localización: Archivos Latinoamericanos de Producción Animal, ISSN 1022-1301, ISSN-e 1022-1301, Vol. 11, Nº. 3, 2003
• Idioma: inglés
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• Resumen

  • With the objective of evaluating five accessions of shrub type Leucaena leucocephala, CIAT 7984, 9438, 9443, 17467, and 17492, these were established at the Orupe Farm in Cojedes state. The site is located at 9º 42' N and 68º 26' O at an altitude of 143 m. The plants were transplanted to the field at 4 mo of age in double rows spaced at 50 x 50 cm, with 2 m separation between accessions and blocks, at a density of 16 000 plants/ha. A uniformity cutting at 50 cm height was done 5 mo after transplanting. Only the 26 central plants of each plot were harvested for evaluation. The variables measured were: dry matter yield, chemical composition, bovine selectivity and resistance to the psyllid insect (Heteropsyla cubana). Statistical analysis was by ANOV and Tuckey Test. The general mean of DM yield per cutting was 1039 kg/ha and the accesions did no differ (P>.05). Condensed tannin content varied (P