Corn silage inoculated with microbial additives

Author(s)

Fernanda Carvalho Basso

• Document type: Doctoral Thesis
• Press: Jaboticabal. 2014-06-11.
• Institution: Universidade Estadual Paulista (Unesp). Faculdade de Ciências Agrárias e Veterinárias. Jaboticabal
• Defense date: 2013-08-09
• Advisor: Ricardo Andrade Reis; Gustavo Rezende Siqueira

Abstract

This study aimed to determine the quality of corn silage inoculated with microbial additives. Therefore, three experiments were carried out. In the first year, in experimental silos, four inoculants that comprised the following treatments were tested: forage inoculated with Lactobacillus buchneri (LB), Propionibacterium acidipropionici (PA), Bacillus subtilis (BS), Lactobacillus plantarum (LP) and combinations LBLP, BSLP and PALP, remaining silage without inoculant (control). After 96 days of ensiling, the chemical composition and the occurrence of yeasts and molds were evaluated. Aerobic stability was performed by 12 days. On days 4, 8 and 12 after opening the pH values and dynamics of yeasts and molds were determined. In the second and third experimental year the quality of silage chosen from the first year were evaluated. In the second year, the silages studied were: control, LB and LBLP, made in stack silos. In the study of performance, nutrient digestibility and microbial protein synthesis, 30 crossbred lambs were used. The trial of rumen fermentation was performed with six crossbred lambs with ruminal cannula. In the third year, we evaluated the association of corn silage inoculated with two levels of concentrate. Two bunker silos were made (control silage and LB). The diets were composed of the respective silages combined with 40 and 60 % concentrate, a total of four treatments. Assessments in animals were similar to those obtained in the second experimental year. The inoculants positively affected fermentation characteristics and reduced cell wall of silages. The inoculation changed ruminal fermentation and, the flow of microbial protein and performance of lambs fed diets containing the inoculated silages were increased. The quality of corn silage was improved by inoculation with microbial additive (AU)

• FAPESP's process: 09/16458-0 - Quality corn silage inoculated with microbial additive and their effects on performance, nutritional characteristics and of lambs carcass
• Grantee: Fernanda Carvalho Basso
• Support Opportunities: Scholarships in Brazil - Doctorate