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Alfalfa grazing

In Australia, lambing in sheep has dropped to as little as 30% after grazing on subterranean clover. Trifolium subterraneum. The clover contains the isoflavonoids formononetin and genistein (Fig. 11.11). These compounds mimic the steroidal nucleus of the natural female hormone estrone. Alfalfa, M. sativa, and ladino clover. Trifolium repens, contain the even more potent isoflavonoid coumestrol. It is 30 times more active than genistein or formononetin, but occurs in lower concentrations in the plant (Shutt, 1976). [Pg.286]

Coumestans, such as coumestrol, are found in high concentrations in alfalfa and clover and have been recognized, along with formononetin, as the cause of infertility in grazing herbivores. Whereas coumestrol acts as an estrogen mimic directly, formononetin has to be metabolized to the estrogenically active compounds diadzein, equol, or >-demethylangolensein. [Pg.339]

Hoveland CS, McCann MA, Bouton JH. Influence of endophyte, alfalfa, and grazing pressure on steer performance and plant persistence of Jesup tall fescue. J Prod Agric 10 546-550, 1997. [Pg.515]

In Britain, the small area of lucerne grown is harvested mainly for silage or for artificial drying (see Chapter 20), but in other parts of the world, notably the USA (where it is known as alfalfa), the crop is also used for grazing. [Pg.492]


See other pages where Alfalfa grazing is mentioned: [Pg.180]    [Pg.186]    [Pg.832]    [Pg.1424]    [Pg.395]    [Pg.63]    [Pg.832]    [Pg.1424]    [Pg.520]    [Pg.103]    [Pg.99]    [Pg.114]    [Pg.796]    [Pg.327]    [Pg.143]    [Pg.184]    [Pg.498]    [Pg.31]    [Pg.108]    [Pg.269]    [Pg.339]    [Pg.150]    [Pg.235]   
See also in sourсe #XX -- [ Pg.519 ]




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Grazing

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