EFECTO DE TRES HENOS SOBRE INDICADORES PRODUCTIVOS Y EL DESARROLLO DEL ESTÓMAGO EN TERRENOS MESTIZOS EN EL TRÓPICO.

Abstract

An investigation was developed on the rearing of lactating calves fed with Golden Button hay, Tithonia diversifolia, previously selected with the aim of evaluating the productive indicators and stomach development in lactating calves fed with Golden Button hay. The calves from The same stable, 1-3 days old, underwent a 15-day adaptation stage where they were subjected to a standard diet of milk substitute 4 liters / day and pre-initial concentrate and Tithonia diversifolia hay; Medicago sativa and Pannicum maximum vc Bombasa at will. The experimental design used for the productive variables was completely randomized blocks. DM consumption (kg-1), with values from 0.32 to 1.72; 0.35 to 2.73 and 0.33 to 2.13 for Buttercup hay, Alfalfa and Mombasa grass, respectively. The weight increase by treatments ranged from 0.33 at 30 days to 0.92 at 15 days for Button de Oro; 0.43 at 30 days to 0.83 at 90 days for Alfalfa and at 0.30 at 30 days to 0.56 (Kg 1) at 90 days for Mombasa grass. The development of the different stomach cavities does not exist difference p <0.05, between the treatments studied for the two periods 45 and 90 days. The use of Gold Button demonstrated the physiological and economic feasibility as a protein and NDF supplement, for young developing bovines, favorable results in conversion index, acceptable weight gains and adequate live weight increases.