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"Experientia docet" - Experience is the best teacher

Rumen bacteria in sheep fed supplemented teff hay

  • 1983
  • Issue: 3
  • Volume: 13
J.J. Therion, R.I. Mackie and F.M.C. Gilchrist Page: 215 - 217

Low-protein teff hay was supplemented with 3% urea and 6% starch to promote growth of the amylolytic bacteria, which liberate branched chain amino acids in the rumen upon lysis. These serve as a source of branched chain volatile fatty acids…

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Voedingsnavorsing met die weidende dier

  • 1983
  • Issue: 4
  • Volume: 13
E.A.N. Engels Page: 292 - 298

Nutrition research with grazing ruminants. Native pasture is still the main source of feed supply for the sheep and beef cattle industries. Apparently an inadequate intake of digestible nutrients puts a limitation on animal production. Due to the seasonal pattern…

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Kinetic measurements on bacterial cultures growing on fibres

  • 1983
  • Issue: 3
  • Volume: 13
A. Kistner, J.H. Kornelius and G.S. Miller Page: 217 - 220

The culture outflow-rate from a specially designed pH-auxostat continuous culture system can be used to calculate the specific growth rates of different bacterial species on suspensions of cellulose or other insoluble substrates. Provided a constant concentration of substrate is maintained…

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Forage evaluation by analysis after fermentation in vitro

  • 1983
  • Issue: 3
  • Volume: 13
C. Dennison and A.M. Phillips Page: 222 - 224

Different forages were analyzed after in vitro fermentation for amino acid and metabolizable energy content, in order to evaluate their potential as ruminant feeds. Least-cost formulations of supplemental by-pass proteins provide the balance of amino acids required for duodenal amino…

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The influence of inoculum source on in vitro digestibility

  • 1983
  • Issue: 3
  • Volume: 13
W. van Hoven and E.A. Boomker Page: 207 - 209

A series of in vitro incubations were performed in which a constant substrate (antelope cube) was used and only the inoculum source was varied. With an inoculum obtained from 7 different wild ruminants, gas production rate varied considerably and was…

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A comparison of rumen function in four Kalahari ungulates

  • 1983
  • Issue: 3
  • Volume: 13
W. van Hoven Page: 209 - 211

The ratio's of reticulo-rumen volume to body mass were determined for all four species in addition to rumen pH, fermentation rate and VFA concentration. Information on rumen and faeces dry-matter percentage is also reported. Only the blue wildebeest exhibited a…

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