Hostname: page-component-76fb5796d-wq484 Total loading time: 0 Render date: 2024-04-25T17:03:09.434Z Has data issue: false hasContentIssue false

Estimation of rates of outflow of protein supplement from the rumen by determining the rate of excretion of chromium-treated protein supplements in faeces

Published online by Cambridge University Press:  02 September 2010

M. E. Elimam
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
E. R. Ørskov
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen AB2 9SB
Get access

Abstract

An experiment was conducted to study the possibility of using marker concentration in faeces to estimate rumen outflow of Cr-treated protein supplements and the liquid phase (PEG). There were no significant differences in the outflow of each marker from the rumen when determined directly from rumen or indirectly from faeces, suggesting that faeces could be used to measure the outflow from the rumen without the need for surgical preparation of the animals. The outflow rate of the liquid phase was considerably faster than Cr-treated protein supplements.

Type
Research Article
Copyright
Copyright © British Society of Animal Science 1984

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

REFERENCES

American Society of Agricultural Engineers. 1967. Method of determining modulus of uniformity and modulus of fineness of ground feed. Agricultural Engineers Year Book. ASAE R 2461, p. 301.Google Scholar
Bull, L. S., Rumpler, W. V., Sweeney, T. F. and Zinn, R. A. 1979. Influence of ruminal turnover on site and extent of digestion. Fedn Proc. Fedn Am. Socs exp. Biol. 38: 27132719.Google ScholarPubMed
Davidson, J., Mathieson, J. and Boyne, A. W. 1970. The use of automation in determining nitrogen by the Kjeldahl method, with final calculations by computer. Analyst, Lond. 95: 181193.CrossRefGoogle ScholarPubMed
Elimam, M. E. and Ørskov, E. R. 1981. Determination of rate of outflow of protein supplements from the rumen by measuring the rate of excretion of chromium-treated protein supplements and polyethylene glycol in the faeces. Anim. Prod. 32: 386 (Abstr.).Google Scholar
Elimam, M. E. and Ørskov, E. R. 1982a. Effect of the feeding level of grass on the rate of outflow of protein supplements from the rumen of sheep. Proc. Nutr. Soc. 41: 29A (Abstr.).Google Scholar
Elimam, M. E. and Ørskov, E. R. 1982b. The effect of level of feeding on the rate of outflow of sodium dichromate-treated protein supplements from the rumen of dairy cows. Proc. Nutr. Soc. 41: 87A (Abstr.).Google Scholar
Faichney, G. J. 1975. The effect of formaldehyde treatment of a concentrate diet on the passage of solute and particulate markers through the gastrointestinal tract of sheep. Aust. J. agric. Res. 26: 319327.CrossRefGoogle Scholar
Ganev, G., Ørskov, E. R. and Smart, R. 1979. The effect of roughage or concentrate feeding and rumen retention time on total degradation of protein in the rumen. J. agric. Sci., Camb. 93: 651656.CrossRefGoogle Scholar
Grovum, W. L. and Williams, V. J. 1973a. Rate of passage of digesta in sheep. 3. Differential rates of passage of water and dry matter from the reticulorumen, abomasum and caecum and proximal colon. Br. J. Nutr. 30: 231240.CrossRefGoogle ScholarPubMed
Grovum, W. L. and Williams, V. J. 1973b. Rate of passage of digesta in sheep. 4. Passage of marker through the alimentary tract and the biological relevance of rate-constants derived from the changes in concentration of marker in faeces. Br. J. Nutr. 30: 313329.CrossRefGoogle ScholarPubMed
Hartnell, G. F. and Satter, L. D. 1979. Determination of rumen fill, retention time and ruminal turnover rates of ingesta at different stages of lactation in dairy cows. J. Anim. Sci. 48: 381392.CrossRefGoogle ScholarPubMed
Mansbridge, R. J. and Ørskov, E. R. 1980. Measurement of and factors affecting outflow rates of protein supplements in sheep and cattle. Anim. Prod. 30: 486487 (Abstr.).Google Scholar
Mehrez, A. Z. and Ørskov, E. R. 1977. A study of the artificial fibre bag technique for determining the digestibility of feeds in the rumen. J. agric. Sci., Camb. 88: 645650.CrossRefGoogle Scholar
Ministry of Agriculture, Fisheries and Food. Department of Agriculture and Fisheries for Scotland and Department of Agriculture For Northern Ireland. 1975. Energy allowances and feeding systems for ruminants. Tech. Bull. 33. Her Majesty's Stationery Office, London.Google Scholar
Ørskov, E. R. and McDonald, I. 1979. The estimation of protein degradability in the rumen from incubation measurements weighted according to rate of passage. J. agric. Sci., Camb. 92: 499503.CrossRefGoogle Scholar
Smith, R. H. 1958. Substances in the calf alimentary tract interfering in the determination of polyethylene glycol. Nature, Lond. 182: 260261.Google Scholar
Stevenson, Audrey E. and Clare, N. T. 1963. Measurement of feed intake by grazing cattle and sheep. IX. Determination of chromic oxide in faeces using an autoanalyzer. N.Z. Jl agric. Res. 6: 121126.CrossRefGoogle Scholar
Thewis, A., Lefrancois, E., Thielman, M. F., Thill, N. and Andre, M. 1979. Rate of passage of digesta in sheep. Annls Rech. Vet. 10: 163165.Google ScholarPubMed
Weller, R. A., Pilgrim, A. F. and Gray, F. V. 1962. Digestion of foodstuffs in the rumen of the sheep and the passage of digesta through its compartments. 3. The progress of nitrogen digestion Br. J. Nutr. 16: 8390.CrossRefGoogle ScholarPubMed