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Oestrogenic activity of fresh, wilted, dried and fermented berseem (Trifolium alexandrinum)

Published online by Cambridge University Press:  27 March 2009

M. N. Shehata ,
Adel Hassan ,
K. El-Shazly  and
A. M. Yassen
M. N. Shehata
Affiliation:
Department of Animal Production, Faculty of Agriculture, Alexandria University, Alexandria, Egypt
Adel Hassan
Affiliation:
Department of Animal Production, Faculty of Agriculture, Alexandria University, Alexandria, Egypt
K. El-Shazly
Affiliation:
Department of Animal Production, Faculty of Agriculture, Alexandria University, Alexandria, Egypt
A. M. Yassen
Affiliation:
Department of Animal Production, Faculty of Agriculture, Alexandria University, Alexandria, Egypt
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Summary

An investigation was carried out to detect and evaluate the oestrogenic activity of three successive cuts of Egyptian clover berseem (Tifolium alexandrinum). Changes in oestrogenic activity due to wilting, drying and fermentation were also studied.

Oestrogenic activity was higher (P < 0·01) in first-cut berseem (49–6 ug diethylstilbestrol equivalency (DES)/kg D.M.) than in the second (38·2 ug) and the third cuts (36·1 ug), and was decreased in the three successive cuts by wilting and dehydrating to 88% D.M. It was greater (P < 0·01) in the wilted berseem than the dried material of the second cut. Oestrogenic activity was increased (P < 0·05) in all cuts by fermentation, but it was higher (P < 0·01) in the fermented second cut than the other cuts.

An intake of 10 kg D.M. of silage would be equivalent to 0·98 mg DES, which have no adverse effects on production and reproduction.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 91 , Issue 2 , October 1978 , pp. 359 - 363
Copyright
Copyright © Cambridge University Press 1978

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