ABSTRACT The objective was to evaluate the effects of maturity at harvest and row spacing on fermentative profile, aerobic stability, and nutritional value of biomass sorghum (BRS 716) silage. The experiment was conducted using a split-plot completely randomized block design with three row spacings (45, 70, and 90 cm) and four maturities at harvest (70, 100, 130, and 160 days) and eight replications. Polyvinyl chloride silos of known weight measuring 50 cm length and 10 cm diameter were used for […]

ABSTRACT Our objective was to identify the best fit mathematical models for in vitro gas production kinetics using rumen fluid and forage plants commonly used in ruminant feed to obtain better estimates of parameters that describe the rumen fermentation. Four mathematical models were tested, two unicompartmental (M1 = first order, M2 = Gompertz) and two bicompartmental (M3 = M1 + M2; M4 = M2 + M2). Two temperate grasses were evaluated, as well as four tropical grasses and three temperate […]

ABSTRACT An in vitro study was carried out to identify the effects of different inclusion levels of postbiotics from Lactobacillus plantarum RG14 on rumen fermentation profiles, gas production kinetics, and microbial population in rumen fluid collected from goats. Postbiotics were added at different levels (0, 0.3, 0.6, 0.9, and 1.2%) and incubated for 72 h with 200 mg dry matter (DM) of a substrate containing 60% Guinea grass and 40% commercial concentrate. The experiment was conducted in triplicate on different […]

O trabalho foi conduzido para avaliar a taxa de passagem de partículas do volumoso e o comportamento ingestivo de novilhas leiteiras de três grupos genéticos Holandes (H) x Zebu (Z): 7/8HZ, 15/16 HZ e Holandês Puro por Cruza (HPC), mantidas em confinamento e alimentadas com dietas, em mistura completa, com dois níveis (30 e 60%) de fibra em detergente neutro (FDN), utilizando-se como volumoso o capim-elefante (Pennisetum purpureum, Schum., cv. Mineirão) picado. O experimento foi conduzido em esquema fatorial 3 […]