PF 13. Effect of grazing density on harvest efficiency, forage allotment and meat production of a triticale crop

• H. Pagliaricci ^[1] ; G. Ferreyra ^[1] ; A. Ohanian ^[1] ; T. Pereyra ^[1]
  1. [1] UNRC. Río Cuarto, Córdoba. Argentina
• Localización: Archivos Latinoamericanos de Producción Animal, ISSN 1022-1301, ISSN-e 1022-1301, Vol. 5, Nº. 3, 1997 (Ejemplar dedicado a: Proceedings XV ALPA meeting 1)
• Idioma: inglés
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• Resumen

  • In the FAV UNRC, Experimental farm, grazing density effect on the productivity of a triticale crop (xTriticosecale Witmack) CV Quiñe UNRC was evaluate, seeding at 28-03-96. Experimental units of 1.5; 1.0; 0.75 and 0.6 ha were used giving four treatments C1: 2 an./ha, C2: 3 an./ha, C3: 4 an./ha and C4: 5an./ha A rotational grazing system was established mode of 7 days of harvest and 40 days of rest. Grazing begin on June 15/96 ending on October 1/96. Angus steers weigthing 182 ± 14.5 kg were put on the scales at the 21 days being kept out the grass from moon of the former day. Harvest efficiency (%), forage allotement (g DM/kgSW/day) daily weigth gain (g/an/day) and meat production (kg/ha) complete randomized block dessing with 2 repetitions were adopted and mean ampared using Duncan‘s test. Harvest efficiency were of 23.4 ± 3.7 %, in C1 and 71.6 ± 2.7 % in C4 differing significantly. Average forage allotments (gDM/kgSW/day) was 180.7 ± 16.7 (C1) and 16.9±0.1 (C4) differing significantly. Daily weigth gain (g/an/day) was of 870 ± 10 for C1 and 370 ± 20 for C4. Intermediate densities gave maximal production, without differing bettween then, but both there treatments with the rest (or with C1and C4). The present studies concluded that the C2 and C3 gave the must meat production, with daily weigth gains over 600 g, harvest efficiency of 65 % and allotments between 30 and 60 g/kgSW/day).