The Effect of Graded Levels of Crude Glycerin in BRS Capiaçu Grass Silage: Fermentation Profile and Bromatological Composition
الموضوعات :م.سی.آ. سیلوا 1 , ن.م. کستا 2 , جی.پی.اس. ریگوریا 3 , د.ل.اس. جسوس 4 , ن.ب.اس. سیلوا 5 , و.اس. سیلوا فیلهو 6 , جی.ت. سیلوا 7 , جی.جی.اس. آرایوجو 8 , وی.ر. روچا جونیور 9 , د.د. آلوز 10 , جی.م.آ. چامون 11 , اف.پی. مونکااُ 12
1 - Department of Animal Science, Faculty of Agricultural Science, State University of Montes Claros (Unimontes), Avenida Reinaldo Vianna, Morada do Sol, Janaúba, Minas Gerais, Brazil
2 - Department of Animal Science, Faculty of Agricultural Science, State University of Montes Claros (Unimontes), Avenida Reinaldo Vianna, Morada do Sol, Janaúba, Minas Gerais, Brazil
3 - Department of Animal Science, Faculty of Agricultural Science, State University of Montes Claros (Unimontes), Avenida Reinaldo Vianna, Morada do Sol, Janaúba, Minas Gerais, Brazil
4 - Department of Animal Science, Faculty of Agricultural Science, State University of Montes Claros (Unimontes), Avenida Reinaldo Vianna, Morada do Sol, Janaúba, Minas Gerais, Brazil
5 - Department of Animal Science, Faculty of Agricultural Science, State University of Montes Claros (Unimontes), Avenida Reinaldo Vianna, Morada do Sol, Janaúba, Minas Gerais, Brazil
6 - Department of Animal Science, Faculty of Agricultural Science, State University of Montes Claros (Unimontes), Avenida Reinaldo Vianna, Morada do Sol, Janaúba, Minas Gerais, Brazil
7 - Department of Animal Science, Faculty of Agricultural Science, State University of Montes Claros (Unimontes), Avenida Reinaldo Vianna, Morada do Sol, Janaúba, Minas Gerais, Brazil
8 - Department of Animal Science, Faculty of Agricultural Science, State University of Montes Claros (Unimontes), Avenida Reinaldo Vianna, Morada do Sol, Janaúba, Minas Gerais, Brazil
9 - Department of Animal Science, Faculty of Agricultural Science, State University of Montes Claros (Unimontes), Avenida Reinaldo Vianna, Morada do Sol, Janaúba, Minas Gerais, Brazil
10 - Department of Animal Science, Faculty of Agricultural Science, State University of Montes Claros (Unimontes), Avenida Reinaldo Vianna, Morada do Sol, Janaúba, Minas Gerais, Brazil
11 - Department of Animal Science, Faculty of Agricultural Science, State University of Montes Claros (Unimontes), Avenida Reinaldo Vianna, Morada do Sol, Janaúba, Minas Gerais, Brazil
12 - Department of Animal Science, Faculty of Agricultural Science, State University of Montes Claros (Unimontes), Avenida Reinaldo Vianna, Morada do Sol, Janaúba, Minas Gerais, Brazil
الکلمات المفتاحية: dry matter, glycerol, effluent loss, total digestible nu-trients, <i>Pennisetum purpureum</i>,
ملخص المقالة :
The objective of this study was to evaluate the effect of crude glycerin inclusion levels on BRS Capiaçu grass (Pennisetum purpureum) silage on the parameters of fermentation and chemical-bromatological composition. Experimental treatments consisted of BRS Capiaçu grass silage with five levels of inclusion of crude glycerin (0, 1, 5, 10 and 15% inclusion in the natural matter) during ensiling. In this study, a completely randomized design was used along with five treatments and six replicates. The inclusion of crude glycerin in BRS capiaçu grass silage linearly reduced pH (P<0.01) and effluent losses (P<0.01). For each percentage unit of glycerin addition, there was a reduction of 0.013 pH units and 0.0485% of the effluent losses. There was no effect of crude glycerin on the ammoniacal nitrogen content (P=0.82, an average of 6.65% of the total nitrogen). The variation in the dry matter content between the highest glycerin inclusion dose (15% of natural matter) and the control group (without glycerin) was 30.5%. The crude protein content (P=0.01), ash (P<0.01), neutral detergent fiber (NDF; P<0.01), neutral detergent fiber corrected for ash and crude protein (NDFap; P<0.01) and acid detergent fiber (ADF; P<0.01) linearly reduced with the inclusion of crude glycerin compare to the control group. In the same order, there was a reduction of 0.115%, 0.08%, 1.95%, 1.84% and 1.06%, respectively, for each percentage unit of glycerin added. The addition of crude glycerin in elephant grass silage vs. BRS Capiaçu up to 15% of the natural material had improved the fermentation profile and the chemical-bromatological composition.
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