Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-03T05:06:21.929Z Has data issue: false hasContentIssue false
  • English
  • Français

The use of ruminal ammonia and blood urea as an index of the nutritive value of protein in some food-stuffs

Published online by Cambridge University Press:  27 March 2009

A. R. Abou Akkada  and
H. El Sayed Osman
A. R. Abou Akkada
Affiliation:
Faculty of Agriculture, University of Khartoum, Sudan
H. El Sayed Osman
Affiliation:
Faculty of Agriculture, University of Khartoum, Sudan
Get access Rights & Permissions [Opens in a new window]

Extract

1. Nine successive trials with three adult desert rams were carried out, with the aim of using ruminal ammonia or blood urea concentration as an index of the nutritive value of the proteins in the various types of forage grown in irrigated parts of the northern Sudan.

The change in the ruminal ammonia and blood urea concentration were considerably higher 3 h after feeding on leguminous forages than on the non-legumes. Among legumes, lubia and lubia hay produced the highest concentrations of both rumen ammonia and blood urea. Feeding the rams on berseem hay reduced the concentrations of ruminal ammonia and blood urea to levels below those given by feeding on fresh berseem.

3. Most of the nitrogen excretion from leguminous forages was in the form of urinary nitrogen whereas for grasses faecal nitrogen made up the bulk of the nitrogen excreted. Berseem hay gave the highest nitrogen retention, followed by the butterfly pea and fresh berseem. Lubia and lubia hay gave the lowest nitrogen retention. The desert grasses produced a negative nitrogen balance when offered to the desert rams.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 69 , Issue 1 , August 1967 , pp. 25 - 31
Copyright
Copyright © Cambridge University Press 1967

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

A.O.A.C. (1955). Official Methods of Analysis of the Association of Official Agricultural Chemists. Washington, D.C.Google Scholar
Abou Akkada, A. R. & Blackburn, T. H. (1963). Some observations on the nitrogen metabolism of rumen proteolytic bacteria. J. gen. Microbiol. 31, 461.CrossRefGoogle ScholarPubMed
Abou Akkada, A. R. & El-Shazly, K. (1958). Studies on the nutritive value of some common Egyptian feeding stuffs. II. Effect of concentrates rich in proteins on cellulose and dry matter digestion. J. agric. Sci., Gamb. 51, 157.CrossRefGoogle Scholar
Abou Akkada, A. R. & El-Shazly, K. (1964). Effect of absence of ciliate protozoa from the rumen on microbial activity and growth of lambs. Appl. Microbiol. 12, 384.Google Scholar
Abou Akkada, A. R. & El-Shazly, K. (1965). Effect of presence or absence of rumen ciliate protozoa on some blood components, nitrogen retention, and digestibility of food constituents in lambs. J. agric. Sci., Camb. 64, 251.CrossRefGoogle Scholar
Annison, E. F. (1956). Nitrogen metabolism in the sheep: protein digestion in the rumen. Biochem. J. 64, 705.Google Scholar
Bybant, M. P. & Robinson, I. M. (1961). Studies on nitrogen requirements of some ruminal cellulolytic bacteria. Appl. Microbiol. 9, 96.Google Scholar
Chalmers, M. (1961). In Digestive Physiology and Nutrition of the Ruminant, p. 205. London: Butterworth.Google Scholar
Chalmers, M. I. & Synge, R. L. M. (1954). The digestion of protein and nitrogenous compounds in ruminants. Adv. Prot. Chem. 9, 93.Google Scholar
Klopfenstein, T. J., Purser, D. B. & Tyzkik, W. J. (1966). Effect of defaunation on feed digestibility, rumen metabolism and blood metabolites. J. anim. Sci., 25, 765.Google Scholar
Lewis, D. (1957). Blood urea concentration in relation to protein utilization in the ruminant. J. agric. Sci., Camb. 48, 438.CrossRefGoogle Scholar
Lewis, D. (1960). Ammonia toxicity in the ruminant. J. agric. Sci., Camb. 55, 111.Google Scholar
Lewis, D. (1961). In The Digestive Physiology and Nutrition of the Ruminant. London: Butterworth.Google Scholar
Lloyad, L. E., Peckhan, H. E. & Crampton, E. W. (1956). The effect of change of protein on the required length of preliminary feeding period in digestion trials with sheep. J. Anim. Sci. 15, 846.CrossRefGoogle Scholar
Odonald, I. W. (1962). Nitrogen metabolism in the rumen. Proc. N.Z. Soc. Anim. Prod. 22, 79.Google Scholar
McLaren, C. A. (1964). Symposium on microbial digestion in ruminants: nitrogen metabolism in the rumen, J. Anim. Sci. 23, 577.CrossRefGoogle Scholar
Morrison, P. B. (1957). Feeds and Feeding. Itheoa, New York: The Morrison Corporation.Google Scholar
Osman, Sayed, El, H. & Danasotjry, M. S. (1963). The nutritive value of Berseem (Medicago sativa) under Sudan conditions. Emp. J. of exp. Agric. 31, 27.Google Scholar
Purser, D. B. & Mora, R. J. (1966). Variation in rumen volume and associated effects as factors influencing metabolism and protozoa concentrations in the rumen of sheep. J. Anim. Sci. 25, 516.Google Scholar
El Shazly, K. (1952). Degradation of protein in the rumen of the sheep. 2. The action of rumen microorganisms on amino acids. Biochem. J. 51, 647.CrossRefGoogle Scholar
El Shazly, K. (1958). Studies on the nutritive value of some common Egyptian feeding stuffs. 1. Nitrogen retention and ruminal ammonia curves. J. agric. Sci., Camb. 51, 149.CrossRefGoogle Scholar
El Shazly, L., Abou Akkada, A. R. & Naoa, M. M. A. (1963). The use of the in vitro fermentation to estimate the digestive energy content of some Egyptian forages. II. The in vitro production of total volatile fatty acids and organic acids as criteria of energy content. J. agric. Sci., Camb. 61, 109.CrossRefGoogle Scholar
Snedecor, C. W. (1957). Statistical Methods, 5th ed.Ames, Iowa: Iowa State College Press.Google Scholar
Tagari, H., Dror, Y., Assarelli, I. & Bondi, A. (1964). The influence of levels of protein and starch in rations of sheep on the utilization of protein. Br. J. Nutr. 18, 333.Google Scholar