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The relative feeding value of kale (Brassica oleracea) containing normal and low concentrations of S-methyl-L-cysteine sulphoxide (SMCO)

Published online by Cambridge University Press:  27 March 2009

T. N. Barry ,
T. R. Manley ,
K. R. Millar  and
R. H. Smith
T. N. Barry
Affiliation:
Invermay Agricultural Research Centre, Mosgiel, New Zealand
T. R. Manley
Affiliation:
Invermay Agricultural Research Centre, Mosgiel, New Zealand
K. R. Millar
Affiliation:
Wallaceville Research Centre, Upper Hutt, New Zealand
R. H. Smith
Affiliation:
Rowett Research Institute, Aberdeen, United Kingdom
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Summary

Kale of normal and low S-methyl-L-cysteine sulphoxide (SMCO) content was produced by growing the same cultivar in soils of normal (20–30 mg/kg) and low (5–10 mg/ kg) soil sulphate-S concentration. Compared with normal S plots, kale grown in low S plots showed little or no reduction in D.M. yield or total N content, but contained lower concentrations of inorganic sulphate, SMCO and glucosinolates.

Replicated plots of normal and low SMCO kale were grazed by lambs for 12-week periods in two consecutive years, using a fixed crop allowance of 2·5 kg D.M./animal/ day. All animals were given injections of copper and iodine, and oral supplements of selenium, to ensure that effects upon animal performance could largely be attributed to differences in kale SMCO concentration.

SMCO concentration in the diet consumed by lambs grazing normal and low SMCO kale was respectively 0·60 and 0·35% D.M. Following the onset of kale feeding, all animals developed subclinical haemolytic anaemia which stabilized by week 6, and was more marked during weeks 1–6 than during weeks 7–12. Animals grazing low SMCO kale showed a less severe anaemia than those grazing normal SMCO kale, which was associated with lower blood concentrations of dimethyl disulphide and Heinz bodies, and higher reduced glutathione (GSH) and packed cell volume (PCV) levels. Liveweight gain and wool growth were greater for lambs grazing low than normal SMCO kale during weeks 1–6, corresponding to the period of most severe haemolytic anaemia, but during weeks 7–12 there were no differences between the two groups.

It was concluded that SMCO content depressed kale feeding value, with most of the depression occurring in the first 6 weeks of grazing, and that in these experiments the lambs were able to adapt to kale containing 0·6% D.M. as SMCO after 6 weeks of feeding. Endocrine factors involved in this adaptation are discussed.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 102 , Issue 3 , June 1984 , pp. 635 - 643
Copyright
Copyright © Cambridge University Press 1984

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References

Barry, T. N., Duncan, S. J., Sadler, W. A., Millar, K. R. & Sheppard, A. D. (1983). Iodine metabolism and thyroid hormone relationships in growing sheep fed on kale (Brassica oleracea) and ryegrass (Lolium perenne) – clover (Trifolium repens) fresh forage diets. British Journal of Nutrition 49, 241–254.CrossRefGoogle ScholarPubMed
Barry, T. N, McDonald, R. C. & Reid, T. C. (1981). Nutritional evaluation of kale (Brassica oleracea) diets. 1. Growth of lambs as affected by time after introduction to the crop, feed allowance and intraperitoneal amino acid supplementation. Journal of Agricultural Science, Cambridge 96, 257–267.CrossRefGoogle Scholar
Barry, T. N., Manley, T. R. & Duncan, S. J. (1984). Quantitative digestion by sheep of carbohydrates, nitrogen and S-methyl-L-cysteine sulphoxide in diets of fresh kale (Brassica oleracea). Journal of Agricultural Science, Cambridge 102, 479–486.CrossRefGoogle Scholar
Barry, T. N., Manley, T. R. & Millar, K. R. (1982). Nutritional evaluation of kale (Brassica oleracea) diets. 4. Responses to supplementation with synthetic S-methyl-L-cysteine sulphoxide. Journal of Agricultural Science, Cambridge 99, 1–12.CrossRefGoogle Scholar
Barry, T. N, Millar, K. R., Bond, G. & Duncan, S. J. (1983). Copper metabolism in growing sheep given kale (Brassica oleracea) and ryegrass (Lolium perenne) – cover (Trifolium repens) fresh forage diets. British Journal of Nutrition 50, 281–289.CrossRefGoogle Scholar
Barry, T. N., Reid, T. C, Millar, K. R. & Sadler, W. A. (1981). Nutritional evaluation of kale (Brassica oleracea) diets. 2. Copper deficiency, thyroid function, and selenium status in young cattle and sheep fed kale for prolonged periods. Journal of Agricultural Science, Cambridge 96, 269–282.CrossRefGoogle Scholar
Earl, C. R. A. & Smith, R. H. (1983). Dimethyl di-sulphide in the blood of cattle fed on brassicas. Journal of the Science of Food and Agriculture 34, 23–28.CrossRefGoogle Scholar
Forss, D. A. & Barry, T. N. (1983). Some observations on nitrile production during autolysis of kale and swedes, and their stability during incubation with rumen fluid. Journal of the Science of Food and Agriculture 34, 1077–1084.CrossRefGoogle Scholar
Gosden, A. F. (1979). An automated procedure for the estimation of S-methyl cysteine sulphoxide in kale. Journal of the Science of Food and Agriculture 30, 892–898.CrossRefGoogle Scholar
McDonald, R. C, Manley, T. R., Barry, T. N., Forss, D. A. & Sinclair, A. G. (1981). Nutritional evaluation of kale (Brassica oleracea) diets. 3. Changes in composition induced by soil fertility practices, with special reference to SMCO and glucosinolate concentrations. Journal of Agricultural Science, Cambridge 97, 13–23.CrossRefGoogle Scholar
Nicoll, A. M. & Barry, T. N. (1980). The feeding of forage crops. In Supplementary Feeding (ed. Drew, K. R. and Fennessy, P. F.), pp. 69–106. New Zealand Societv of Animal Production Occasional Publication No. 7. Mosgiel, New Zealand: c/o Invermay Research Centre.Google Scholar
Smith, R. H. (1974). Kale poisoning. Report of the Rowett Institute 30, 112–131.Google Scholar
Smith, R. H., Watt, W. B., Lawson, W. J. & Rice-Evans, C. (1982). Redcell membrane changes in a Heinz body anaemia (kale anaemia). In Protids of the Biological Fluids. 29th Colloquium, 1981 (ed. Peeters, H.), pp. 125–128. Oxford: Pergamon Press.Google Scholar
Steven, F. S., Griffin, M. M. & Smith, R. H. (1981). Disulphide exchange reactions in the control of enzymic activity. European Journal of Biochemistry 119, 75–78.CrossRefGoogle ScholarPubMed
Trenkle, A. H. (1980). Amino acid metabolism and hormonal control during growth. In Digestive Physiology and Metabolism in Ruminants (ed. Ruckebusch, Y. and Thivend, P.), pp. 505–522. Lancaster, U. K.: MTP Press.CrossRefGoogle Scholar
Ulyatt, M. J. (1973). The feeding value of herbage. In Chemistry and Biochemistry of Herbage, vol. III (ed. Butler, G. W. and Bailey, R. W.), pp. 131–178. London: Academic Press.Google Scholar