Composición química y digestibilidad in situ del ensilaje de cuatro variedades de Pennisetum purpureum obtenido mediante la técnica de minisilos
Journal
Acta Agronómica
ISSN
2323-0118
Date Issued
2025-07-08
Author(s)
Bruno Rafael Santos Borges
Lucien Bissi Da Freiria
Túlio Otávio de Jardim D’Almeida Lins
Emerson Silva Miranda
Alan Andrade Mesquita
Fagton De Mattos Negrão
Abstract
This study aimed to evaluate the fermentative characteristics and the chemical composition of Pennisetum purpureum cv. Roxo silages with addition of dehydrated Bixa orellana. A completely randomized design with four treatments (0, 15, 30, and 45 g kg-1) and five replicates was used. The variables analyzed were pH, ammoniacal nitrogen, effluent loss and dry matter recovery, and dry matter, crude protein, neutral detergent fiber, acid detergent fiber, and hemicellulose content.
The data were subjected to analysis of variance and regression at a 5 % probability level (p < 0.05) using the statistical package SISVAR®. A linear increase of 0.0038 and 0.3305 percentage units was observed for each 1 g kg-1 of dehydrated annatto residue included, on pH and dry matter recovery. Ammoniacal nitrogen and effluent loss values reduced linearly by 0.0096 and 0.2473 percentage units. Each 1 g kg-1 of dehydrated annatto residue included in the Pennisetum purpureum silage promoted a linear increase of 0.4235, 0.1333, 0.5347, and 0.6450 percentage units in dry matter, crude protein, and neutral detergent fiber and hemicellulose, respectively.
There was a reduction of 0.1107 percentage units in acid detergent fiber content. It was concluded that dehydrated annatto residue has the potential to serve as a silage moisture sequestrant for use in ruminant feed.
The data were subjected to analysis of variance and regression at a 5 % probability level (p < 0.05) using the statistical package SISVAR®. A linear increase of 0.0038 and 0.3305 percentage units was observed for each 1 g kg-1 of dehydrated annatto residue included, on pH and dry matter recovery. Ammoniacal nitrogen and effluent loss values reduced linearly by 0.0096 and 0.2473 percentage units. Each 1 g kg-1 of dehydrated annatto residue included in the Pennisetum purpureum silage promoted a linear increase of 0.4235, 0.1333, 0.5347, and 0.6450 percentage units in dry matter, crude protein, and neutral detergent fiber and hemicellulose, respectively.
There was a reduction of 0.1107 percentage units in acid detergent fiber content. It was concluded that dehydrated annatto residue has the potential to serve as a silage moisture sequestrant for use in ruminant feed.