Qualidade da silagem de sorgo no período de desensilagem: avaliação de híbridos, estratos do silo e estrutura da massa
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Data
2021-07-13
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Editor
Universidade Federal de Goiás
Resumo
This study aimed to evaluate the chemical and fermentation
quality of silage from two sorghum hybrids in different layers
of the silo feed-out face, as well as the interference of the
aerobic exposure time of structured and/or unstructured silo
face (after feed-out). The AG-2005E hybrid silage presented
higher crude protein content and higher pH compared
to hybrid AG-60298 (6.33% and 4.0 versus 6.06% and 3.8,
respectively). Silages from stratum 0 to 20cm had the lowest
dry matter content and the highest crude protein content
(38% and 6.35%, respectively). The pH did not differ between layers, and the NH3 content was higher in the stratum 60 to 80cm
(4.5%). During 72 hours of aerobic exposure, the unstructured silage
presented a higher increase in temperature than the silage from the
structured face, but this period was not enough to result in differences
in dry matter, mineral matter, NH3, and pH. The chemical and
fermentation quality of the silage was directly influenced by hybrid
and silo stratum. After aerobic exposure, silage from the structured
face seems to suffer less interference compared to the silo feed-out
face.
Descrição
Palavras-chave
Avaliação a campo, Degradação aeróbia, Pós-abertura do silo, Qualidade nutricional, Massa específica da silagem, Aerobic degradation, Field evaluation, Nutritional quality, Silo post-opening, Specific silage mass
Citação
NEUMANN, Mikael et al. Qualidade da silagem de sorgo no período de desensilagem: avaliação de híbridos, estratos do silo e estrutura da massa. Ciência Animal Brasileira, Goiânia, v. 22, p. e-68298, 2021. Disponível em: https://www.revistas.ufg.br/vet/article/view/68298.