Murumuru (Astrocaryum murumuru) meal as an additive to elephant grass silage

Abstract

Background: Tropical grasses, such as elephant grass, have high moisture content during its ideal phenological state for silage. High moisture content hinders proper preservation and reduces the nutritive value of silage due to secondary fermentation and production of effluents. Adding feed materials with high dry matter content, such as murumuru (Astrocaryum murumuru) meal, is a potential alternative to improve silage yield. Objective: To determine the effects of including murumuru meal (0, 7, 14, 21, and 28%) on the fermentative characteristics, microbiological activity, aerobic stability, and chemical composition of elephant grass silages. Methods: A completely randomized design with five treatments and five replicates was used. Elephant grass was collected at 60 d of age, minced, and homogenized with murumuru meal. The mass was placed in experimental 15-L silos. The silos were collected and analyzed 45 d later. Results: Effluent production decreased (p<0.05) as the proportions of murumuru meal in silage increased. A quadratic effect (p<0.05) was observed on dry matter recovery. An increase (p<0.05) was observed in dry matter content, a decrease (p<0.05) in the neutral detergent fiber content, and an increase (p<0.05) in the non-fibrous carbohydrate content with the inclusion of murumuru meal. Conclusions: Addition of murumuru meal improves chemical composition and does not affect the fermentative characteristics of elephant grass silage, while it reduces effluent losses. Nevertheless, the inclusion of murumuru meal in the elephant grass silage decreased the time of aerobic stability.

Perfil fermentativo, calidad nutricional y estabilidad aerobia de ensilajes mezclados de hierba elefante (Pennisetum purpureum Schum) y maní forrajero (Arachis pintoi)

“…Araújo et al -Ensilaje mezclado de gramíneas y leguminosas: Calidad nutricional Tabla 1). Según Serra-Ferreira et al(43), los CNF's son considerados solubles y de alta digestibilidad, contribuyendo para el aumento del valor nutricional de los ensilajes. Cuando el contenido de CNF es alto, significa que hay gran cantidad de almidón y azúcares.…”

“…Ese hecho es relevante porque son nutrientes que vuelven el alimento rico en energía(44). Sin embargo, según Serra-Ferreira et al(43) ese aumento en el valor nutricional aún dependerá de la acción de microrganismos homo o hetero fermentativos y de los productos generados durante la fermentación (agua, calor, CO2, alcohol y ácidos láctico, acético, propiónico y butírico).El aumento del contenido de NDT está asociado a la presencia de maní forrajero en la composición de los ensilajes de hierba-elefante. Esos valores son inferiores a los encontrados por Zhang et al(45) con reducción de 730.35 para 664.62 g/kg MS y relatados por Chen et al (38) con aumento de 659.3 para 753.8 g/kg MS de NDT, ambos autores utilizando niveles de alfalfa adicionados al ensilaje de sorgo.…”

Pecuária bovina de corte na Amazônia: uma revisão sistemática

“…A perda da produtividade e fertilidade do solo incapacita a sustentação das exigências para a produtividade animal (VILELA et al, 2019), afetando a produção de alimentos. A recuperação de pastagens é uma alternativa de grande relevância ao processo produtivo, com isso o uso de técnicas de sensoriamento remoto tem sido fundamental para identificar e classificar pastagens em diferentes processos de degradação (FERREIRA et al, 2019) SANTOS et al, 2014;FERREIRA et al, 2020;QUEIROZ et al, 2020). O uso de bioestimulante aliados à adubação nitrogenada em capim Urochloa brizantha cv.…”