Avaliação nutricional da silagem de azevém (Lolium multiflorum, LAM.) em diferentes tempos de desidratação da massa verde em diferentes estádios fenológicos

Abstract

This study aimed to evaluate the nutritional quality of ryegrass silage at different times of pre-dehydration and different growth stages, as well as determine its degradability and ruminal degradation curve. For silage, it were applied 6 different treatments at different times of forage growth: on Vegetative: T0: cut and silage; T1: cut and ensiled after 4 hours of drying; T2: cut and ensiled after 7 hours of drying. On Pre-flowering: T0: cut and silage; T1: cut and ensiled after 4 hours of drying. On flowering: T0: cut and silage. The experimental design was completely randomized with 6 treatments and 4 repetitions. It were evaluated, chemical composition, in vitro digestibility and in situ degradability, besides the ruminal degradation curve. Dehydration aid at moisture loss of fodder, with losses of nitrogen on vegetative. The digestibility of ryegrass silage was influenced by both dehydration times and age of plant. The use of silage on vegetative has advantages for chemical quality and ruminal degradability. It also enables the realization of more biomass crop due to regrowth capacity, which does not occur in other growth stages.