Influence of forage NDF level, source and pelletizing on growth performance, dietary energetics, and characteristics of digestive function for feedlot cattle

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:33:20Z
Fecha de publicación2013-01-01
ResumenOne hundred sixty Holstein steers (222 +/- 1 kg) were used in a 264-d growing-finishing trial to evaluate the influence of forage aNDFom level (40 vs 80 g/kg DM) and source {[}ground forage (alfalfa, sudangrass, and rice straw) or pelletized rice straw] on growth performance. Forage source did not influence (P>0.10) gain efficiency or dietary net energy (NE). Daily weight gain (ADG) and dry matter intake (DMI) were similar (P>0.10) for alfalfa, sudangrass and ground rice straw. Pelletizing rice straw depressed ADG (P<0.01) and DMI (P<0.01). Increasing forage aNDFom decreased gain efficiency (P=0.09), and dietary NE (P=0.04). Four Holstein steers (197 kg) with ruminal and proximal duodenal cannulas were used in a 4 x 4 Latin square design to compare effects of alfalfa vs sudangrass hay at 40 vs 80 g/kg of forage aNDFom on digestion. There were no treatment effects on ruminal aNDFom digestion (P>0.10). Ruminal OM digestion was not affected by forage aNDFom level (P=0.96); however, it was greater (P=0.04) for sudangrass vs alfalfa supplemented diets. Microbial efficiency was not affected by forage aNDFom level (P=0.53); however, it was greater (P=0.02) for alfalfa vs sudangrass supplemented diets. Forage source did not affect total tract aNDFom digestion (P=0.86). However, aNDFom digestion was greater (P=0.08) for 80 vs 40 g/kg of forage aNDFom. There were interactions between forage aNDFom level and source on total tract OM digestion (P=0.03). With alfalfa, level of forage aNDFom did not affect OM digestion. With sudangrass, increasing forage aNDFom decreased (P<0.05) total tract OM digestion. There were interactions between forage aNDFom level and source on ruminal pH (P=0.05), and acetate:propionate ratio. With alfalfa, increasing forage aNDFom did not affect ruminal pH, but increased acetate:propionate molar ratio. With sudangrass, the increasing forage aNDFom increased ruminal pH, but did not affect VFA molar ratios. Four Holstein steers (189 kg) were used in a 4 x 4 Latin square design to compare effects of ground vs pelletized rice straw at 40 vs 80 g/kg of forage aNDFom on digestion. There were no treatment effects (P>0.10) on ruminal OM digestion or microbial efficiency. Ruminal aNDFom digestion was greater (P=0.05) for pelletized vs ground rice straw. There were no treatment effects (P>0.10) on total tract aNDFom digestion. Pelletizing did not affect (P=0.78) total tract OM digestion. Tract OM digestion was greater (P=0.03) for 40 vs 80 g/kg of forage aNDFom. Level of forage aNDFom did not affect (P>0.10) ruminal pH or VFA molar proportions. Ruminal pH and acetate:propionate molar ratio were greater (P<0.10) for ground vs pelletized rice straw. Differences among forage sources are minimized when forages are compared at similar levels of forage aNDFom concentration. Compared to ground, pelleted rice straw in finishing diets may produce lower ruminal pH and growth-performance of cattle. (C) 2013 Elsevier B.V. All rights reserved.es_ES
Doihttps://doi.org/10.1016/j.anifeedsci.2013.05.004es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/5162
Idiomaenes_ES
EditorialELSEVIERes_ES
RelaciónAnimal Feed Science and Technologyes_ES
URL relacionadohttps://doi.org/10.1016/j.anifeedsci.2013.05.004es_ES
DerechosAcceso restringido / Suscripción (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_16eces_ES
FuenteAnimal Feed Science and Technology
Palabra claveForageses_ES
Palabra clavePelletizinges_ES
Palabra claveFeedlot cattlees_ES
Palabra claveDigestiones_ES
TítuloInfluence of forage NDF level, source and pelletizing on growth performance, dietary energetics, and characteristics of digestive function for feedlot cattlees_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorSalinas-Chavira, J.
AutorAlvarez, E.
AutorMontano, M. F.
AutorZinn, R. A.
AutorSalinas-Chavira, J.es_ES
AutorAlvarez, E.es_ES
AutorMontano, M. F.es_ES
AutorZinn, R. A.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número3-4es_ES
Rango de páginas106-115es_ES
URL relacionadahttps://doi.org/10.1016/j.anifeedsci.2013.05.004
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen183es_ES

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