Interactions between Selenium and Haemoglobin Type in the Reproductive Performance of Ewes Grazing Oestrogenic Pasture
نویسندگان
چکیده
Some ewes grazing oestrogenic pasture consistently produce viable offspring and are therefore considered to be resistant to Clover Disease. In a search for factors associated with this resistance Obst, Seamark and McGowan (1971) reported a significant association between ewe fertility and haemoglobin type (Hb) in a small flock of Merino ewes grazing Yarloop clover pastures. Low fertility and high lamb mortality on these pastures may also be associated with selenium (Se) deficiency (Godwin, Kuchel and Buckley, 1971).
منابع مشابه
The Mechanism of Temporary Infertility in Ewes Grazing Oestrogenic Subterranean Clover Prior to and during Joining
Ewes in which oestrus had been synchronised were artificially inseminated (at the second synchronised oestrus) 17 to 21 days after placement on plots containing either oestrogenic (Trifolium subterraneum L. c% Dinninup) or non oestrogenic pasture. A comparison of the reproductive performance indicated that grazing oestrogenic pasture prior to and during joining reduced the proportion of ewes in...
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