EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Estimation of the physical fill of feedstuffs in the rumen by the in sacco degradation characteristics


Livestock Production Science 39(1): 43-47
Estimation of the physical fill of feedstuffs in the rumen by the in sacco degradation characteristics
A method is proposed to estimate the physical fill of feedstuffs in the rumen by mathematically combining in sacco degradation characteristics and fractional outflow rate of NDF in the rumen. The relatively simple equation obtained provides an estimate of the mean retention time (days) in the rumen of 1 kg feed NDF. The equation can be used to predict the maximum intake of feedstuffs due to a physical limitation of the NDF capacity in the reticulo-rumen. The equations are useful in understanding and predicting changes in potential intake associated with changes in rate of degradation and rate of passage. The method is illustrated by results obtained with clover-grass hay, grass cubes and maize silage.

Accession: 002373480

DOI: 10.1016/0301-6226(94)90151-1

Download PDF Full Text: Estimation of the physical fill of feedstuffs in the rumen by the in sacco degradation characteristics



Related references

Estimation of ruminal digestibility of NDF from in Sacco degradation and rumen fractional outflow rate. Acta Agriculturae Scandinavica Section A Animal Science 44(2): 96-109, 1994

Bacterial contamination of feed residues during degradation in sacco in the rumen. Consequences for the estimation of nitrogen degradability. Reproduction, Nutrition, Developpement 28(Suppl. 1.): 105-106, 1988

Estimation of the extent of bacterial contamination in bag residues and its influence on in sacco measurements of forage nitrogen degradation in rumen. Proceedings of the XVI International Grassland Congress, 4-11 October 1989, Nice, France: 909-910, 1989

Bacterial contamination of feed residues from rumen degradation in sacco. Use of a stomacher to reduce it and consequences for the estimation of nitrogen degradability. Reproduction, Nutrition, Developpement 28(Suppl. 1.): 107-108, 1988

Prediction of voluntary intake, apparent digestibility and digestible dry-matter intake of hays by sheep from rumen degradation characteristics, ruminal outflow rate and rumen fill. Grassland Science 42(4): 283-288, 1997

In sacco evaluation of rumen protein degradation characteristics and in vitro enzyme digestibility of dry roasted whole lupin seeds (Lupinus albus). Asian Australasian Journal of Animal Sciences 12(3): 358-365, 1999

Prediction of Elephantgrass dry matter intake and rumen-fill of lactating cows from degradation characteristics. Journal of Dairy Science 86(Supplement 1): 342, 2003

Manipulation of rumen fluid pH and its influence on cellulolysis in sacco, dry matter degradation and the rumen microflora of sheep offered either hay or concentrate. Animal Feed Science and Technology1984; 10(1): 1-14, 1983

Manipulation of rumen fluid ph and its influence on cellulolysis in sacco dry matter degradation and the rumen micro flora of sheep offered either hay or concentrate. Animal Feed Science & Technology 10(1): 1-14, 1983, 1984

In Sacco rate and extent of dry matter and protein degradation of commercially available feedstuffs. Indian Journal of Animal Nutrition 14(4): 213-222, Dec, 1997