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Nine different accessions of Sesbania sesban were examined for their toxicity to ciliate protozoa from sheep receiving a mixed grass hay-barley/fishmeal concentrate in Aberdeen, Scotland. Several accessions were much more toxic than those (ILRI 10865, ILRI 15036) identified and tested in a previo...


Teferedegne, B.McIntosh, F.Osuji, P.O.Odenyo, A.A.Wallace, R.J.Newbold, C.J.[Influence of foliage from different accessions of the sub-tropical leguminous tree, Sesbania sesban, on ruminal protozoa in Ethiopian and Scottish sheep]Influence of foliage from different accessions of the sub-tropical leguminous tree, Sesbania sesban, on ruminal protozoa in Ethiopian and Scottish sheep

Acacia angustissima has potential in agroforestry systems for forage production in tropical environments. However, feeding trials indicate that the leaves are potentially toxic. Signs of toxicity in sheep are similar to those presented by sheep fed flatpea (Lathyrus sylvestris) hay which contains...


Reed, J.D.Gebre-Mariam, G.Robinson, C.J.Hanson, JeanOdenyo, A.A.Treichel, P.M.[Acetyldiaminobutanoic acid, a potential lathyrogenic amino acid in leaves of Acacia angustissima]Acetyldiaminobutanoic acid, a potential lathyrogenic amino acid in leaves of Acacia angustissima

Tannins limit the use of fodder trees as feed for ruminants. Removal of the effects of tannins would thus improve the nutritional quality of these trees. This prompted the study to evaluate the effect of rumen or faecal mixed cultures from different animals on tannin degradation. Tannin extracts,...


Ephraim, E.Odenyo, A.A.Ashenafi, M.[Screening for tannin degradation by rumen and faecal samples of wild and domestic animals in Ethiopia]Screening for tannin degradation by rumen and faecal samples of wild and domestic animals in Ethiopia

The capabilities of rumen fluid sources from indigenous African ruminants and hindgut fluid from zebra to ferment leaves of Acacia angustissima, Calliandra calothyrsus, Leucaena diversifolia, Leucaena leucocephala, Leucaena pallida, and Tephrosia bracteolata were evaluated to determine the presen...


Odenyo, A.A.McSweeney, C.S.Palmer, B.Negassa, D.Osuji, P.O.[In vitro screening of rumen fluid samples from indigenous African ruminants provides for rumen fluid with superior capacities to digest tannin-rich fodders]In vitro screening of rumen fluid samples from indigenous African ruminants provides for rumen fluid with superior capacities to digest tannin-rich fodders

Four straight rods and three spherical bacteria were isolated using roll tubes inoculated with rumen fluid from sheep and goats and enriched with tannic acid. The isolates were characterized by morphology, products of fermentation and restriction fragment length polymorphism that indicated the co...


Kebede, M.Odenyo, A.A.Assefa, F.[Isolation and characterization of tannins tolerant bacteria from rumen fluid of free ranging sheep and goats]Isolation and characterization of tannins tolerant bacteria from rumen fluid of free ranging sheep and goats

In most tropical countries poor nutrition limits ruminant productivity. The main feed resources include native pasture and crop residues, which are low in nitrogen (6.2-10.6 g/kg DM) and high in fibre (676-772 g/kg DM). Nutritional deficiencies of these feeds can be alleviated by supplementation ...


Odenyo, A.A.Osuji, P.O.Reed, J.D.Smith, A.H.Mackie, R.I.McSweeney, C.S.Hanson, Jean[Acacia angustissima: Its anti-nutrients constituents, toxicity and possible mechanisms to alleviate the toxicity - a short review]Acacia angustissima: Its anti-nutrients constituents, toxicity and possible mechanisms to alleviate the toxicity - a short review

Foliage of four multipurpose trees (Calliandra calothyrsus, Chamaecytisus palmensis, Leucaena diversifolia and Vernonia amygdalina) and a woody leguminous perennial (Lablab purpureus) were evaluated for their potential as protein supplements for sheep fed maize stover ad libitum. The chemical c...


Hindrichsen, I.K.Osuji, P.O.Odenyo, A.A.Madsen, J.Hvelplund, T.[Effect of supplementation of maize stover with foliage of various tropical multipurpose trees and Lablab purpureus on intake, rumen fermentation, digesta kinetics and microbial protein supply of sheep]Effect of supplementation of maize stover with foliage of various tropical multipurpose trees and Lablab purpureus on intake, rumen fermentation, digesta kinetics and microbial protein supply of sheep

Three strains of tannin-tolerant rumen bacteria were isolated from enrichment cultures of rumen microflora of sheep, goat, and antelope and established in medium containing high concentrations of crude tannin extract or tannic acid. These three strains (EAT2, ES3, and EG19), characterized as Sele...


Odenyo, A.A.Osuji, P.O.[Tannin-tolerant ruminal bacteria from East African ruminants]Tannin-tolerant ruminal bacteria from East African ruminants

The aim of this study was to isolate and characterize bacteria capable of hydrolysing tannins from the faeces of Ethiopian ruminants adapted to feed on tannin-rich leaves. Faecal samples were collected from dikdik (Madoqua guentheri), camel (Camelus dromedaries), Grant's gazelle (Gazella granti),...


Ephraim, E.Odenyo, A.A.Ashenafi, M.[Isolation and characterization of tannin-degrading bacteria from faecal samples of some wild ruminants in Ethiopia]Isolation and characterization of tannin-degrading bacteria from faecal samples of some wild ruminants in Ethiopia

Fermentation of legume fodder tree leaves by rumen microorganisms was evaluated. The substrates were sun-dried, ground leaves. Gas and volatile fatty acid (VFAs) production were estimated. Using gas production as an index of fermentation at 12 h, the leaves tested ranked as follows; Chamaecytisus...


Odenyo, A.A.Osuji, P.O.Negassa, D.[Microbial evaluation of fodder tree leaves as ruminant feed]Microbial evaluation of fodder tree leaves as ruminant feed

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