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<p>Our objective was to determine the fermentability coefficient (FC) of different tropical forages and the fermentative profile, chemical composition, and in vitro degradability of their silages. A randomised block design was used, with five treatments and four repetitions. The forage species studied were whole-plant maize (<i>Zea mays</i>), <i>Cenchrus purpureus</i> cv. BRS Capiaçu, <i>Urochloa brizantha</i> cv. BRS Piatã, <i>U. decumbens</i> cv. Basilisk, and <i>Megathyrsus maximus</i> cv. BRS Zuri. The FC was highest (<i>P &lt;</i> 0.001) in whole-plant maize, followed by BRS Capiaçu, and lowest for BRS Piatã, Basilisk, and BRS Zuri. The fibrous fraction of the plant was higher (<i>P &lt;</i> 0.001) for BRS Capiaçu and lower for whole-plant maize. The pH and ammonia content were lower (<i>P &lt;</i> 0.001) for maize and BRS Capiaçu silages, and higher for BRS Zuri silage. Maize silage showed the highest effective DM digestibility (<i>P &lt;</i> 0.001). The BRS Capiaçu silage exhibited a higher (<i>P =</i> 0.009) indigestible NDF fraction. In conclusion, if whole-plant maize cannot be produced for silage, ensiling perennial grasses, such as BRS Capiaçu, BRS Piatã, and Basilisk, is recommended due to their higher ensilability compared to BRS Zuri.</p>

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Fermentability coefficient of tropical forages and fermentative profile and in vitro degradability of silages

  • 期刊论文

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  • 发表日期：

    2025年8月25日

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  • Wagner Sousa Alves,
  • Gabriel Ferreira de Lima Cruz,
  • Rafael Lelis de Freitas,
  • Tamara Chagas da Silveira,
  • Danielle Nascimento Coutinho,
  • João Paulo Santos Roseira,
  • Thiago Neves Teixeira,
  • João Paulo Sampaio Rigueira,
  • Odilon Gomes Pereira,
  • Karina Guimarães Ribeiro

摘要

Our objective was to determine the fermentability coefficient (FC) of different tropical forages and the fermentative profile, chemical composition, and in vitro degradability of their silages. A randomised block design was used, with five treatments and four repetitions. The forage species studied were whole-plant maize (Zea mays), Cenchrus purpureus cv. BRS Capiaçu, Urochloa brizantha cv. BRS Piatã, U. decumbens cv. Basilisk, and Megathyrsus maximus cv. BRS Zuri. The FC was highest (P < 0.001) in whole-plant maize, followed by BRS Capiaçu, and lowest for BRS Piatã, Basilisk, and BRS Zuri. The fibrous fraction of the plant was higher (P < 0.001) for BRS Capiaçu and lower for whole-plant maize. The pH and ammonia content were lower (P < 0.001) for maize and BRS Capiaçu silages, and higher for BRS Zuri silage. Maize silage showed the highest effective DM digestibility (P < 0.001). The BRS Capiaçu silage exhibited a higher (P = 0.009) indigestible NDF fraction. In conclusion, if whole-plant maize cannot be produced for silage, ensiling perennial grasses, such as BRS Capiaçu, BRS Piatã, and Basilisk, is recommended due to their higher ensilability compared to BRS Zuri.