Fermentation parameters and in vitro degradability of diets containing Cratylia argentea hay as a substitute for Tifton-85 hay.
Cratylia argentea has potential for use in ruminant feed; however, the presence of condensed tannins (CT) can interfere with rumen fermentation dynamics. This study aimed to evaluate the fermentation parameters and in vitro degradability of diets containing C. argentea hay as a substitute for Tifton...
| Autores: | , , , , , , , , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | Brasil |
| Recursos: | Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
| Repositorio: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
| Idioma: | inglés |
| OAI Identifier: | oai:www.alice.cnptia.embrapa.br:doc/1181990 |
| Acesso em linha: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1181990 https://doi.org/10.1111/gfs.70024 |
| Access Level: | acceso abierto |
| Palavra-chave: | Metano entérico Producao de gas Leguminosa Nutrição Animal Ruminante |
| Resumo: | Cratylia argentea has potential for use in ruminant feed; however, the presence of condensed tannins (CT) can interfere with rumen fermentation dynamics. This study aimed to evaluate the fermentation parameters and in vitro degradability of diets containing C. argentea hay as a substitute for Tifton-85 hay. The experiment was conducted in a randomised block design with a 3×4 factorial arrangement, using incubation times of 24, 48, and 96h, and varying the inclusion of C. argentea hay at 0%, 20%, 40%, or 100% concentration, with three replicates per treatment. The production of CH4 [mL/true organic matter (TOM)], gas [mL/ dry matter (DM)], CH4mL/g DM, the in vitro DM digestibility (IVDMD), organic matter (IVOMD), TOM (TOMD), the partition factor (PF), which quantifies the fraction of total organic matter available for microbial fermentation, pH, the ammonia nitrogen concentrations (NH3-N), short-chain fatty acids (SCFA), isoacids and the acetate to propionate ratio were evaluated. Substitution levels did not significantly influence (p>0.05) CH4 production, gas, PF, pH, NH3-N, SCFA, or isoacids. CH4mL/g DM showed quadratic behaviour (p<0.05), whereas digestibility coefficients showed a linear reduction at 96h of incubation, probably due to fibre and CT concentrations in legume hay. However, these coefficients at the 40% inclusion level were similar to the treatment without legume hay at 96h of incubation. Therefore, the fermentation and in vitro degradability parameters suggest that C. argentea hay can replace Tifton-85 hay by up to 40% in ruminant feed with the potential to reduce enteric CH4 production. |
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