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Parameters of fermentation and rumen microbiota of Nellore steers fed with different proportions of concentrate in fresh sugarcane containing diets
| Content Provider | Scilit |
|---|---|
| Author | Júnior, Carlos S. Ribeiro Messana, Juliana D. Granja-Salcedo, Yury T. Canesin, Roberta C. Fiorentini, Giovani Vito, Elias San Furlan, Luiz R. Reis, Ricardo A. Berchielli, Telma T. |
| Copyright Year | 2016 |
| Description | The objective of this study was to evaluate the effect of a fresh sugarcane-based diet and different roughage-to-concentrate ratios (70:30, 60:40, 40:60 and 20:80) on the rumen microbiota associated with rumen fermentation parameters and the intake and apparent digestibility of nutrients in Nellore steers. Eight rumen-cannulated Nellore steers (331 ± 8 kg BW) were distributed in a double 4 × 4 Latin square design balanced for the control of the residual effect. The ruminal pH decreased (p < 0.01) and the concentrations of $N–NH_{3}$, isovaleric and valeric acids increased linearly (p < 0.05) with an increase dietary concentrate level. Furthermore, an increased concentrate proportion reduced the population of Fibrobacter succinogenes and Ruminococus flavefaciens (p < 0.01) and increased the population of Selenomonas ruminantium and Megasphaera elsdenii (p < 0.01). The protozoa count revealed a predominance of the genus Entodinium. The synthesis of microbial N [g/d] and the efficiency of microbial synthesis [g of microbial N/kg of organic matter apparently digested in the rumen] increased as the proportion of concentrate was increased (p < 0.05). Therefore, it can be concluded that an increasing proportion of concentrate in sugarcane-containing diets enhances the synthesis of microbial protein and does not alter the fibre digestibility, although the population of fibre fermenting bacteria was reduced. |
| Related Links | https://repositorio.unesp.br/bitstream/11449/165272/1/WOS000381086900006.pdf |
| Ending Page | 415 |
| Page Count | 14 |
| Starting Page | 402 |
| ISSN | 1745039X |
| e-ISSN | 14772817 |
| DOI | 10.1080/1745039x.2016.1206737 |
| Journal | Archives of animal nutrition |
| Issue Number | 5 |
| Volume Number | 70 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2016-07-14 |
| Access Restriction | Open |
| Subject Keyword | Agriculture and Animal Production Bacteria Digestibility Microbial Protein Protozoa Rumen Fermentation Steers Sugarcane |
| Content Type | Text |
| Resource Type | Article |
| Subject | Veterinary Medicine Animal Science and Zoology |
