Oestrogens in pasture legumes

Flux, D. S.; Munford, Robyn; Barclay, P. C.

doi:10.1080/00288233.1961.10420382

Cited by 9 publications

(2 citation statements)

References 12 publications

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“…Red clover has shown oestrogenic activity in the UK (28, 32, 35) and in New Zealand (15); and Australian work showed that the fertility of ewes was depressed after grazing red clover (3). The oestrogenic activity is not destroyed by silage-making (17).…”

Section: The Effect Of a Ryegrass Companion Grass And The Variety Of mentioning

confidence: 99%

The Effect of a Ryegrass Companion Grass and the Variety of Red Clover on the Productivity of Red‐clover Swards

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Harkess

Hunt

1972

Grass and Forage Science

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An experiment was condncted to measure the effects of differrat ryegrass companion grasses and red-clover varieties on the productivity of red-clover swards. Three sOage harvests per year were taken over a 2-year period.The addition of a companion grass increased total herbage yields; S24 perennial ryegrass gave the highest herbage yield over the two years, followed by Reveille perennial ryegrass. Because of lack of persistence, Tetila Italian ryegrass yielded poorly the second year. A companion grass had Uttle effect on red-clover yields in the mixed swards but improved percentage digestibility of the OM of the total herbage and lowered the CP percentage. Its presence also reduced the ingress of unsown species.The variety of red clover used had little effect on total herbage yields or red-clover yields in the first harvest year. In the second year, Hungaropoly and Tilo persisted better and so gave higher total herbage yields and red-clover yields than Dorset Marl or Essex. The fall in total herbage yields from the first to the second year was entirely due to a fall in red-clover yield since yields of the 'non-red clover' fraction of the total herbage increased.A red-clover/grass sward may have advantages over a pure red-clover sward nutritionally, for silage-making and for its effect in diluting the oestrogenic activity of a pure clover sward. A major reappraisal of the role and potential of red-clover swards in the UK is warranted because of their many valuable attributes, particularly their ability to give high herbage yields of high nutritive value without the addition of fertilizer N. The improved persistency of some of the tetraploid varieties of red clover enhances the value of the plant.

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Section: The Effect Of a Ryegrass Companion Grass And The Variety Of mentioning

confidence: 99%

The Effect of a Ryegrass Companion Grass and the Variety of Red Clover on the Productivity of Red‐clover Swards

Frame

Harkess

Hunt

1972

Grass and Forage Science

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“…Tests for coumestrol were not carried out. Cunningham and Hogan (1954), Bassett and White (1955), and Flux et al (1961) in their studies on New Zealand pastures, did not find appreciable oestrogenic activity in either ryegrass or white clover, therefore our findings of high oestrogenic activity and the presence of formononetin-like and genistein-like substances in these two important pasture species, associated with an exceptionally high incidence of mastitis, appear to be of considerable interest to veterinarians and agricultul'alists.…”

Section: Oestrogens In Pasture and A Possible Relationship With Mastitismentioning

confidence: 44%