Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-22T16:27:27.709Z Has data issue: false hasContentIssue false

Studies of the chemical composition of kales and rapes. II. The rapes

Published online by Cambridge University Press:  27 March 2009

D. J. C. Jones
Affiliation:
Ministry of Agriculture, Fisheries and Food, Trawscoed, Aberystwyth

Extract

1. Three varieties of giant rape, two broad leaved Essex rapes, Hungry Gap Kale and Rape-Kale, were grown at two centres in mid-Wales. They were sampled in the early winter period and the samples divided into separate leaf and stem samples. These samples were used to calculate leaf to stem ratios on a green and dry-matter basis.

2. The levels of the proximate constituents, silica, calcium, magnesium, phosphorus, sodium, potassium, chlorine, total sulphur, sulphate sulphur and ‘organic’ sulphur were determined in the dried samples. Whole plant values were calculated from the leaf and stem values with the appropriate leaf to stem ratios.

3. The leaf values for ether extract, crude protein, silica-free ash, silica, calcium, phosphorus, magnesium, chlorine, total sulphur and ‘organic’ sulphur are higher than the corresponding stem values. For dry matter, crude fibre, nitrogen-free extractives and sodium the reverse is found, whilst for sulphate sulphur there is no definite distribution.

4. There are no significant differences in composition between the main groups of varieties, and the rape-type kales are very similar to the other rapes in this respect.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1959

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

Adams, A. F. B. & Garrett, H. E. (1940). N.Z. J. Sci. Tech. 22, 221A.Google Scholar
Bertrand, G. & Ghitescu, V. (1934). O.R. Acad. Agric. Fr. 20, 1052.Google Scholar
Calder, R. A. & Doak, B. W. (1934). N.Z. J. Sci. Tech. 15, 332.Google Scholar
Fagan, T. W., Phillips, R. & Davies, R. O. (1945). Welsh J. Agric. 18, 75.Google Scholar
Kellner, O. (1926). The Scientific Feeding of Animals, trans. Goodwin, W.. London: Duckworth.Google Scholar
Lancaster, R. J. & Adams, A. F. R. (1943). N.Z. J. Sci. Tech. 25, 131A.Google Scholar
Morrison, F. B. (1947). Feeds and Feeding. Ithaca, New York: The Morrison Publishing Co.Google Scholar
Schrader, D. (1933). Arch. Tierernähr. Tierz. 9, 524.Google Scholar
Thomas, P. T. & Crane, M. B. (1942). Nature, Lond., 150, 431.CrossRefGoogle Scholar
Woodman, H. E. (1957). Rations for Livestock. Bull. no. 48, H.M.S.O.Google Scholar