Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/6030
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dc.contributor.authorNgwa, A Thomasen
dc.contributor.authorNsahlai, Ignatius Ven
dc.contributor.authorIji, Paulen
dc.date.accessioned2010-05-26T15:44:00Z-
dc.date.issued2003-
dc.identifier.citationSmall Ruminant Research, 48(2), p. 83-94en
dc.identifier.issn0921-4488en
dc.identifier.issn0197-7393en
dc.identifier.urihttps://hdl.handle.net/1959.11/6030-
dc.description.abstractIn the first of a two-phased study, changes in rumen pH and concentrations of VFA were evaluated on diets based on pasture straw (negative control) or straw supplemented with alfalfa (Alfalfa diet), pods of 'Acacia sieberiana' (Sieberiana diet), 'Acacia nilotica' (Nilotica diet) or 'Leucaena leucocephala' (Leucaena diet) for South African Merino rams. In the second phase, the effects of the same diets on the degradation of extracted straw in nylon bags and activities of microbial enzymes were investigated. The pH and total concentration of VFAs in rumen fluid ranged from 6.2 to 6.5 and 30–53 mmol l⁻¹, while degradation of DM and NDF varied from 126 to 269g kg⁻¹ DM and 233–309 g kg⁻¹ NDF, respectively, among diets. Variations in pH were not significant (P > 0.05), but diet influenced (P < 0.01) the concentration of VFAs, degradation of DM and cell wall constituents as well as enzyme activities of proteolytic and fibrolytic microorganisms. The results showed that the differences between the alfalfa and pod diets might have been due mainly to the presence of tannins in the pods. These compounds limit the growth and/or activity of ruminal microorganisms. However, a limitation in the supply of energy imposed by the pod diets may have reduced the efficiency of N capture by microorganisms leading to a depression in microbial activity. The tested legume pods could be used in limited quantities to supplement low-quality forage. The pods may need to be detoxified prior to inclusion at much higher levels in the diet.en
dc.languageenen
dc.publisherElsevier BVen
dc.relation.ispartofSmall Ruminant Researchen
dc.titleEffect of feeding legume pods or alfalfa in combination with poor quality grass straw on microbial enzyme activity and production of VFA in the rumen of South African Merino sheepen
dc.typeJournal Articleen
dc.identifier.doi10.1016/S0921-4488(03)00009-9en
dc.subject.keywordsAnimal Nutritionen
local.contributor.firstnameA Thomasen
local.contributor.firstnameIgnatius Ven
local.contributor.firstnamePaulen
local.subject.for2008070204 Animal Nutritionen
local.subject.seo2008830310 Sheep - Meaten
local.profile.schoolAnimal Scienceen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailpiji@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-20100505-17198en
local.publisher.placeNetherlandsen
local.format.startpage83en
local.format.endpage94en
local.identifier.scopusid0037404735en
local.peerreviewedYesen
local.identifier.volume48en
local.identifier.issue2en
local.contributor.lastnameNgwaen
local.contributor.lastnameNsahlaien
local.contributor.lastnameIjien
dc.identifier.staffune-id:pijien
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:6182en
dc.identifier.academiclevelAcademicen
local.title.maintitleEffect of feeding legume pods or alfalfa in combination with poor quality grass straw on microbial enzyme activity and production of VFA in the rumen of South African Merino sheepen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorNgwa, A Thomasen
local.search.authorNsahlai, Ignatius Ven
local.search.authorIji, Paulen
local.uneassociationUnknownen
local.year.published2003en
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