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dc.contributor.author Salem, A.Z.M.
dc.contributor.author Gado, H.M.
dc.contributor.author Colombatto, D.
dc.contributor.author Elghandour, M.M.Y.
dc.date.accessioned 2017-03-14T23:43:10Z
dc.date.available 2017-03-14T23:43:10Z
dc.date.issued 2013-02-21
dc.identifier.uri http://hdl.handle.net/20.500.11799/66050
dc.description.abstract Forty crossbred steers (Baladi Friesian, average BW 15375.14 kg) were used to evaluate the effects of exogenous enzyme (ENZ) addition on nutrient intake, digestion, ruminal fermentation and feed conversion in beef steers. Steers were randomly assigned to two groups of 20 animals and fed individually a total mixed ration (TMR) without (CTRL) or with addition of 40 g/hd/d of an enzyme mixture (ZADOs). The ENZ mixture was added for 220 days and in vivo apparent digestibility was measured on days 210–220. Enzyme addition did not affect (P¼0.1) DM intake, whereas it increased (Po0.05) total tract apparent digestibility of all nutrients. The magnitude of improvement in digestibility varied among nutrients, with the highest improvement occurring in digestibility of NDF and ADF (21.8% and 26.7%, respectively). Addition of ENZ also increased (Po0.05) concentrations of rumen ammonia N and total short chain fatty acids (SCFA) before and 3 h post-feeding. Allantoin concentration total purine derivates were increased (P¼0.04) with enzyme addition while uric acid was not affected (P¼0.05). Live-weight gain was also higher (Po0.01) in steers supplemented with ENZ. In conclusion, adding the exogenous enzyme product increased live-weight gain by 16% due to increased nutrient digestibility. es
dc.language.iso eng es
dc.publisher Elsevier es
dc.rights openAccess es
dc.rights https://creativecommons.org/licenses/by-nd/4.0/ es
dc.rights openAccess es
dc.rights https://creativecommons.org/licenses/by-nd/4.0/ es
dc.subject Live-weight gain es
dc.subject Digestibility es
dc.subject Purine derivates es
dc.subject Steers es
dc.subject Enzymes es
dc.title Effects of exogenous enzymes on nutrient digestibility, ruminal fermentation and growth performance in beef steers es
dc.type Artículo es
dc.provenance Científica es
dc.road Dorada es
dc.ambito Internacional es


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  • Título
  • Effects of exogenous enzymes on nutrient digestibility, ruminal fermentation and growth performance in beef steers
  • Autor
  • Salem, A.Z.M.
  • Gado, H.M.
  • Colombatto, D.
  • Elghandour, M.M.Y.
  • Fecha de publicación
  • 2013-02-21
  • Editor
  • Elsevier
  • Tipo de documento
  • Artículo
  • Palabras clave
  • Live-weight gain
  • Digestibility
  • Purine derivates
  • Steers
  • Enzymes
  • Los documentos depositados en el Repositorio Institucional de la Universidad Autónoma del Estado de México se encuentran a disposición en Acceso Abierto bajo la licencia Creative Commons: Atribución-NoComercial-SinDerivar 4.0 Internacional (CC BY-NC-ND 4.0)

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