Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-23T02:10:49.707Z Has data issue: false hasContentIssue false
  • English
  • Français

Studies in the absorption and excretion of certain minerals by poultry. I. The excretion of calcium, phosphorus, carbonate and chloride by hens, with special reference to variations during the day, and in relation to oviposition

Published online by Cambridge University Press:  27 March 2009

Cyril Tyler
Cyril Tyler
Affiliation:
The University, Reading
Get access Rights & Permissions [Opens in a new window]

Extract

1. An experiment was performed to obtain information on the fluctuations in excretion of calcium, carbonate, phosphorus and chloride within the day.

2. It was found that there was a lower excretion of calcium and carbonate in the 12 midnight–8 a.m. subperiod than in the 8 a.m.–4 p.m. and 4 p.m.–12 midnight subperiods. Phosphorus showed a much smaller variation, whilst chloride gave inconsistent results.

3. When eggs were laid there was a distinct increase in phosphorus and chloride excretion and a fall in calcium and carbonate excretion. These changes, although related in time to each other, were not clearly related to the time of oviposition. Thin-shelled eggs did not give the same results, much smaller changes being observed.

4. When changes were made in the amount of calcium carbonate added to the basal ration the effect on the composition of the excreta was noted within 4 hr., the full effect showing itself within 16 hr.

5. The significance of these results in relation to egg-shell formation is discussed.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 36 , Issue 4 , October 1946 , pp. 263 - 274
Copyright
Copyright © Cambridge University Press 1946

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

Browne, T. G. (1922). J. Comp. Path. 35, 12.CrossRefGoogle Scholar
Collins, S. H. (1906). J. Soc. Cham. Ind., Lond., 25, 518.Google Scholar
Common, R. H. (1932). J. Agric. Sci. 22, 576.Google Scholar
Common, R. H. (1933). J. Agric. Sci. 23, 555.Google Scholar
Davies, W. L. (1932). Analyst, 57, 79.CrossRefGoogle Scholar
Halnan, E. T. (1942). Bull. Minist. Agric., Lond., no. 7, p. 18.Google Scholar
Henry, K. M., MacDonald, A. J. & Magee, H. E. (1933). J. exp. Biol. 10, 153.Google Scholar
Kaupp, B. F. & Ivey, J. E. (1923). J. Agric. Res. 23, 721.Google Scholar
Keith, M. H., Card, L. E. & Mitchell, H. H. (1927). J. Agric. Res. 34, 759.Google Scholar
Peters, J. P. & Van Slyke, D. D. (1932).Quantitative Clinical Chemistry. 2. Methods, p. 873. London: Bailliere, Tindall and Cox.Google Scholar
Tyler, C. & Willcox, J. S. (1942). J. Agric. Sci. 32, 43.Google Scholar