Mostrar el registro sencillo del ítem AMMAR, H. BODAS, R. GONZÁLEZ, J. S. Salem, A.Z.M. GIRÁLDEZ, F. J. ANDRÉS, S. LÓPEZ, S. 2017-03-14T20:51:11Z 2017-03-14T20:51:11Z 2013-05-01
dc.description.abstract A two-stage in vitro procedure was used for assessing the activity of parotid saliva to enhance rumen digestion of tanniniferous browse foliage. The procedure consisted of pre-incubation in saliva for 4 h at 39 °C followed by incubation in diluted buffered rumen fluid. Using this procedure, a study was conducted to examine the effects of pre-incubation in sheep (SS), quebracho-supplemented sheep (qSS) and goat (GS) parotid saliva or in McDougall’s artificial saliva (AS, used as control) on in vitro rumen fermentation kinetics (estimated using the gas production technique) of browse foliage from six shrub species (Cytisus scoparius, Genista florida, Rosa canina, Quercus pyrenaica, Cistus laurifolius and Erica australis) collected over two seasons (spring and autumn), thus varying the in vitro digestibility (from 0·597 to 0·903) and tannin contents (from3 to 130 g tannic acid equivalent/kg dry matter (DM)). Saliva was collected from four sheep and four goats fed alfalfa hay, and fromfour sheep fed the same alfalfa hay but supplemented with quebracho (rich in condensed tannins) for 60 d, through a cannula inserted in the parotid duct, and rumen fluid was always from sheep fed alfalfa hay. The extent of degradation when browse foliage was pre-incubated in qSS was similar to that observed with control AS (0·449 v. 0·452, respectively), and 8% less than the value with pre-incubation in SS (0·490). In vitro fermentation kinetics (gas production parameters) of browse foliage were not significantly enhanced with pre-incubation in qSS compared with SS, whereas in vitro digestibility and extent of degradation in the rumen were significantly reduced with qSS compared with SS. After pre-incubation in sheep and goat saliva, the extent of browse foliage degradation was significantly increased by 4–8% compared with pre-incubation in the control AS. Fermentation efficiency of browse foliage was increased (P<0·05) with pre-incubation in GS compared with SS. Sheep or goat saliva may have some activity to affect in vitro rumen fermentation of the foliage samples incubated, enhancing extent of degradation of tannin-rich browse. However, a relationship between the magnitude of this effect and the tannin content of the browse foliage could not be established, suggesting that sheep and goat saliva may not be particularly important in neutralizing tannins. es
dc.language.iso eng es
dc.publisher Journal of Agricultural Science es
dc.rights openAccess es
dc.rights es
dc.rights openAccess es
dc.rights es
dc.subject Effects of pre-incubation es
dc.subject sheep es
dc.subject goat saliva es
dc.subject in vitro rumen digestion es
dc.subject tanniferous es
dc.subject foliage es
dc.title Effects of pre-incubation in sheep and goat saliva on in vitro rumen digestion of tanniferous browse foliage es
dc.type Artículo es
dc.provenance Científica es
dc.road Dorada es
dc.ambito Internacional es

Ficheros en el ítem

Este ítem aparece en la(s) siguiente(s) colección(ones)

Visualización del Documento

  • Título
  • Effects of pre-incubation in sheep and goat saliva on in vitro rumen digestion of tanniferous browse foliage
  • Autor
  • AMMAR, H.
  • BODAS, R.
  • Salem, A.Z.M.
  • ANDRÉS, S.
  • LÓPEZ, S.
  • Fecha de publicación
  • 2013-05-01
  • Editor
  • Journal of Agricultural Science
  • Tipo de documento
  • Artículo
  • Palabras clave
  • Effects of pre-incubation
  • sheep
  • goat saliva
  • in vitro rumen digestion
  • tanniferous
  • foliage
  • 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)

Mostrar el registro sencillo del ítem

Buscar en RI

Buscar en RI