Effect of increasing levels of rice polishings on ruminal dry matter degradability and productive performance of fattening sheep

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:34:24Z
Fecha de publicación2013-01-01
ResumenThe objective of this study was to evaluate the parameters of ruminal degradation and behavior in fattening ovine fed highly concentrated diets with increasing levels of rice polishing. Two experiments were developed: 1.-effects of increasing levels of rice polishing (RP) on ruminal degradability of dry matter (RDDM) and 2.-behavior of fattening ovine. Three diets or treatments were used with equal content of CP (14 %) and metabolizable energy (8.36 MJ/kg of DM). The RP contents in diets were 0 % (T1 or control), 11 % (T2) and 22 % (T3). The RDDM was determined in Pelibuey sheep, using ruminal cannulas. Bags with food samples were incubated in the rumen during 4, 8, 12, 24 and 48 h. Sheep (75 % Pelibuey x 25 % Doper) of 20 ±2.99 kg at the beginning were used for the test of fattening behavior, randomly distributed in individual cages with the same treatments of the RDDM test. Degradation parameters show that the diet with 22 % of RP had higher values in the rapidly soluble fraction (a), as well as the DM which disappeared from the rumen in the 4, 8 and 12 h of incubation. In respect to the control diet, the diet with 22 % of RP had lower ruminal degradability of the soluble fraction (b) and the DM disappeared from the rumen after 48 h of incubation. The potential degradability (a + b) and the constant degradation (c) were not affected by the RP level. Effective degradability at the rumen turnover rate (k) from 5 to 10 % was higher in the diet with 22 % of RP. The highest daily food intake for the behavior test was for sheep in T3 and the lowest in T2 (P <0.05). The biggest daily gain in sheep was in the control group and the lowest in the T2 group (P < 0.05). The best feed conversion was observed in the control group and the lowest in T3 group (P < 0.05). It can be concluded that the RP, at high concentrated portions, can increase the RDDM and the rate of ruminal fluid, and can affect the behavior in sheep fattening. However, the RP reduces the most expensive conventional ingredients such as soybean, sorghum grain and cattle bait.es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/6193
Idiomaenes_ES
EditorialInstituto de Ciencia Animales_ES
RelaciónCuban Journal of Agricultural Sciencees_ES
URL relacionadohttps://www.scopus.com/pages/publications/84897992010?origin=resultslistes_ES
DerechosAcceso restringido / Suscripción (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_16eces_ES
FuenteCuban Journal of Agricultural Science
Palabra claveOvine fatteninges_ES
Palabra claveRice by-productes_ES
Palabra claveRuminal kineticses_ES
TítuloEffect of increasing levels of rice polishings on ruminal dry matter degradability and productive performance of fattening sheepes_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorSalinas-Chavira, J.
AutorPérez, J.A.
AutorRosales, J.A.
AutorHernández, E.A.
AutorLa O, O.
AutorSalinas-Chavira, J.es_ES
AutorPérez, J.A.es_ES
AutorRosales, J.A.es_ES
AutorHernández, E.A.es_ES
AutorLa O, O.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número4es_ES
Rango de páginas375-380es_ES
URL relacionadahttps://www.scopus.com/pages/publications/84897992010?origin=resultslist
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen47es_ES

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