Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1977;18(1):98-107.
doi: 10.1186/BF03548470.

Fermentation pattern in the bovine rumen after feeding straight feeds

K Jensen

Fermentation pattern in the bovine rumen after feeding straight feeds

K Jensen. Acta Vet Scand. 1977.

Abstract

The influence of straight feeds on the fermentation pattern in the bovine rumen was investigated by feeding with hay, grass pellets, dried beet pulp with molasses and rolled oats. The study comprised 3 rumenfistulated dairy heifers, and the parameters measured were ammonia, pH and volatile fatty acids (VFA) in the rumen fluid, and non-glucogenic/glucogenic ratio (NGGR) in the VFA mixture.

Typical differences related to the structure and chemical composition of the diets were demonstrated by the parameters measured. Fermentation of the easily digestible feeds resulted in so extensive variations that representative means could be obtained only by analyzing samples collected frequently throughout the feeding cycle.

Rumen pH was found highly correlated to total VFA concentration for all the feeds examined, and the regression coefficients showed that diets, based upon beets and oats, were fermented under low buffering capacity.

PubMed Disclaimer

References

    1. Anonymous . Official Methods of Analysis. 10th Ed. Washington D. C: Association of Official Agricultural Chemists; 1965.
    1. Balch D A, Rowland S J. Volatile fatty acids and lactic acid in the rumen of dairy cows receiving a variety of diets. Brit. J. Nutr. 1957;11:288–298. doi: 10.1079/BJN19570046. - DOI - PubMed
    1. Bath I H, Rook J A F. The evaluation of cattle foods and diets in terms of the ruminal concentration of volatile fatty acids. I. The effects of level of intake, frequency of feeding, the ratio of hay to concentrates in the diet, and of supplementary feeds. J. agric. Sci. 1963;61:341–348. doi: 10.1017/S0021859600018050. - DOI
    1. Bath I H, Rook J A F. The evaluation of cattle foods and diets in terms of the ruminal concentration of volatile fatty acids. II. Roughages and succulents. J. agric. Sci. 1965;64:67–75. doi: 10.1017/S0021859600010480. - DOI
    1. Briggs P K, Hogan J P, Reid R L. The effect of volatile fatty acids, lactic acid, and ammonia on rumen pH in sheep. Aust. J. agric. Res. 1957;8:674–690. doi: 10.1071/AR9570674. - DOI

LinkOut - more resources