The total digestible nutrients and gross digestible energy of ruminant feeds
- 1 December 1960
- journal article
- research article
- Published by Cambridge University Press (CUP) in The Journal of Agricultural Science
- Vol. 55 (3), 403-408
- https://doi.org/10.1017/s0021859600023303
Abstract
It is shown that reasonable estimates of the average amounts of total digestible nutrients and gross digestible energy of ruminant feeds can be derived from knowledge of only the crude-protein and crude-fibre contents of such material as fed. These estimates do not appear to be markedly affected, if at all, by differences in class of feed or species of ruminant whether cattle, sheep or goat. A table of the average estimates of digestible crude protein and total digestible nutrients, to be expected at different levels of crude protein and crude fibre, is presented for use in the estimation of the average nutritive value of feeds whose digestibility has not been studied in detail by means of numerous animal trials. Inherent in the relationship between either total digestible nutrients or gross digestible energy and the proximate partial composition of the feed is a suggestion that if a low plane of protein nutrition is prolonged, that is when the crude protein of the dry diet lies persistently below some 5% in the dry feed, there is likely to be a sharp fall in the total digestibility of the feed.Keywords
This publication has 7 references indexed in Scilit:
- The nutritive ratio/crude-protein relationships in ruminant and non-ruminant digestionThe Journal of Agricultural Science, 1958
- The apparent digestibility of crude protein by the ruminant: IV. The effect of crude fibreThe Journal of Agricultural Science, 1957
- The apparent digestibility of crude protein by the ruminant: I. A synthesis of the results of digestibility trials with herbage and mixed feedsThe Journal of Agricultural Science, 1956
- The Digestion of Protein and Nitrogenous Compounds in RuminantsAdvances in protein chemistry, 1954
- The Prediction of Digestibility for Feeds for Which There are Only Proximate Composition DataJournal of Animal Science, 1952
- Estimation of the Digestibility of Feeds from their Proximate CompositionJournal of Animal Science, 1951
- The Apparent Digestibility of Prairie Hay of Variable Protein Content, with Some Observations of Fecal Nitrogen Excretion by Steers in Relation to Their Dry Matter IntakeJournal of Animal Science, 1948