Influence of Wheat Straw Pelletizing and Inclusion Rate in Dry Rolled or Steam-flaked Corn-based Finishing Diets on Characteristics of Digestion for Feedlot Cattle

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:33:33Z
Fecha de publicación2016-01-01
ResumenEight Holstein steers (216 +/- 48 kg body weight) fitted with ruminal and duodenal cannulas were used to evaluate effects of wheat straw processing (ground vs pelleted) at two straw inclusion rates (7 /0 and 14\%; dry matter basis) in dry rolled or steam-flaked corn based finishing diets on characteristics of digestion. The experimental design was a split plot consisting of two simultaneous 4X4 Latin squares. Increasing straw level reduced ruminal (p<0.01) and total tract (p = 0.03) organic matter (OM) digestion. As expected, increasing wheat straw level from 7\% to 14\% decreased (p<0.05) ruminal and total tract digestion of OM. Digestion of neutral detergent fiber (NDF) and starch, per se, were not affected (p>0.10) by wheat straw level. Likewise, straw level did not influence ruminal acetate and propionate molar proportions or estimated methane production (p>0.10). Pelleting straw did not affect (p >= 0.48) ruminal digestion of OM, NDF, and starch, or microbial efficiency. Ruminal feed N digestion was greater (7.4\%; p = 0.02) for ground than for pelleted wheat straw diets. Although ruminal starch digestion was not affected by straw processing, post-ruminal (p<0.01), and total-tract starch (p = 0.05) digestion were greater for ground than for pelleted wheat straw diets, resulting in a tendency for increased post-ruminal (p = 0.06) and total tract (p = 0.07) OM digestion. Pelleting wheat straw decreased (p<0.01) ruminal pH, although ruminal volatile fatty acids (VFA) concentration and estimated methane were not affected (p >= 0.27). Ruminal digestion of OM and starch, and post-ruminal and total tract digestion of OM, starch and N were greater (p<0.01) for steam flaked than for dry rolled corn-based diets. Ruminal NDF digestion was greater (p = 0.02) for dry rolled than for steam-flaked corn, although total tract NDF digestion was unaffected (p = 0.94). Ruminal microbial efficiency and ruminal degradation of feed N were not affected (p>0.14) by corn processing. However, microbial N flow to the small intestine and ruminal N efficiency (non-ammonia N flow to the small intestine/N intake) were greater (p<0.01) for steam-flaked than for dry rolled corn-based diets. Ruminal pH and total VFA concentration were not affected (p >= 0.16) by corn processing method. Compared with dry rolled corn, steam-flaked corn-based diets resulted in decreased acetate:propionate molar ratio (p = 0.02). It is concluded that at 7\% or 14\% straw inclusion rate, changes in physical characteristics of wheat straw brought about by pelleting negatively impact OM digestion of both steam-flaked and dry-rolled corn-based finishing diets. This effect is due to decreased post-ruminal starch digestion. Replacement of ground straw with pelleted straw also may decrease ruminal pH.es_ES
Doihttps://doi.org/10.5713/ajas.15.0062es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/5379
Idiomaenes_ES
EditorialASIAN-AUSTRALASIAN ASSOC ANIMAL PRODUCTION SOCes_ES
RelaciónAsian-Australasian Journal of Animal Scienceses_ES
URL relacionadohttps://doi.org/10.5713/ajas.15.0062es_ES
DerechosAcceso abierto (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_abf2es_ES
FuenteAsian-Australasian Journal of Animal Sciences
Palabra claveDigestiones_ES
Palabra claveCattlees_ES
Palabra claveWheat Strawes_ES
Palabra claveCorn Graines_ES
Palabra claveProcessinges_ES
TítuloInfluence of Wheat Straw Pelletizing and Inclusion Rate in Dry Rolled or Steam-flaked Corn-based Finishing Diets on Characteristics of Digestion for Feedlot Cattlees_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorManriquez, O. M.
AutorMontano, M. F.
AutorCalderon, J. F.
AutorValdez, J. A.
AutorChirino, J. O.
AutorGonzalez, V. M.
AutorSalinas-Chavira, J.
AutorMendoza, G. D.
AutorSoto, S.
AutorZinn, R. A.
AutorManriquez, O. M.es_ES
AutorMontano, M. F.es_ES
AutorCalderon, J. F.es_ES
AutorValdez, J. A.es_ES
AutorChirino, J. O.es_ES
AutorGonzalez, V. M.es_ES
AutorSalinas-Chavira, J.es_ES
AutorMendoza, G. D.es_ES
AutorSoto, S.es_ES
AutorZinn, R. A.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número6es_ES
Rango de páginas823-829es_ES
URL relacionadahttps://doi.org/10.5713/ajas.15.0062
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen29es_ES

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