Determinación de la calidad nutritiva de mezclas forrajeras ensiladas y frecuencias de aprovechamiento

Abstract

This work was conducted in order to determine the nutritional quality of ensiled forage mixtures and frequency of use. perennial ryegrass, annual rye grass, blue grass, white clover and red clover harvested in 3 frequencies: 30, 45 and 60 days after cutting resulting in 12 treatments in April mixtures of forages were used. Plots were established in the field, in a split plot experimental design, where the botanical composition in green forage was evaluated. With the material obtained the ensiling process was conducted in microsilos and characterized each treatment at baseline (green fodder) and end (silage), its nutritional quality, fermentative quality, organoleptic characteristics, microbial load and also with ensiled material digestibility in situ in experimental animals fistulated under completely randomized design in factorial arrangement 4 x 3 was evaluated. The results indicate significant differences between treatments, where it was established that the T7 (m3f1) treatment had the highest digestibility values (70.60%), metabolizable energy (2.17 Mcal / kg), digestible energy (2.65 Mcal / kg), sugar (11.5%), organoleptic properties (20 points) and a lower content of FDA (31.79%), plus a rate of marginal return of $ 2.07.