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Agronomy Journal Abstract -

In Vivo Nylon Bag vs. Two-Stage In Vitro Digestion: Comparison of Two Techniques for Estimating Dry-Matter Digestibility of Forages1


This article in AJ

  1. Vol. 61 No. 4, p. 587-589
    Received: Dec 19, 1968

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  1. W. G. Manson,
  2. R. S. Lowrey and
  3. Ian Forbes Jr.2



In vivo nylon bag and two-stage in vitro, digestion techniques were used to estimate dry-matter digestibility of 159 forage samples involving Coastal hermudagrass (Cynodon dactylon L. Pers.), Pensacola bahiagrass (Paspalum notatum Flugge), pearl millet (Pennisetum typhoides (Burm.) Stapf and C.E. Hubb.), blue lupine (Lupinus angustifolius L.), Desmodium uncinatum, and Dolichos lablab L. A highly significant correlation (r = .81, P < .01) was obtained between the two methods with all forages. The stem component of the pearl millet sampies gave the lowest correlation between methods. Either method, when properly used, can be of valuable assistance in evaluating the quality of large numbers of forage samples.

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