Abstract
The seasonality of forage production represents a limiting factor in the production of ruminants. The use of silages has been a solution for periods of low forage production, providing high quality food. This study was conducted to evaluate the fermentative characteristics and the chemical composition of silage of Urochloa brizantha cultivars with different levels of Campo Grande Stylosanthes. It was used a complete randomized block design with three replications in a 2 x 4 factorial design, being two cultivars of Urochloa brizantha (BRS Piata palisadegrass and BRS Paiaguas palisadegrass) and four levels of Campo Grande Stylosanthes (0, 10, 20 and 30%). Silages of Urochloa brizantha with Campo Grande Stylosanthes exhibit satisfactory quality, on the basis of the characteristics evaluated, with no significant difference between cultivars. The mixed silage of Campo Grande Stylosanthes with grasses at 30% has proven to be an interesting option, thus promoting adequate fermentation and maintaining the nutritional quality of silage.
Highlights
In Brazil, the Central-West region is characterized by two marked seasons, rainy and dry, which causes the seasonality of forage production
This study evaluated the chemical and fermentation characteristics of silages of Urochloa brizantha cultivars with different levels of Campo Grande Stylosanthes
Cultivars of Urochloa (BRS Piata palisadegrass and BRS Paiaguas palisadegrass) and Campo Grande Stylosanthes were already planted since March 2013
Summary
In Brazil, the Central-West region is characterized by two marked seasons, rainy and dry, which causes the seasonality of forage production. Alternatives should be sought to supplement this forage deficit, since the requirements of the animals remain constant throughout the year. It is interesting the use of excess forage for ensiling for its use during periods of low forage production. Silage of forage grasses is currently gaining ground due to the high production potential of tropical grasses. Considering the lack of information on silages of grass with legumes, there is need for further information, especially with regard to the legume levels added to the grass silage In this sense, this study evaluated the chemical and fermentation characteristics of silages of Urochloa brizantha cultivars with different levels of Campo Grande Stylosanthes
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