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  • Title: Reproductive response of ewes fed alfalfa pellets containing sodium selenate or Astragalus bisulcatus as a selenium source.
    Author: Panter KE, James LF, Mayland HF.
    Journal: Vet Hum Toxicol; 1995 Feb; 37(1):30-2. PubMed ID: 7709586.
    Abstract:
    Selenium fed to open cycling ewes in the form of sodium selenate or Astragalus bisulcatus (a selenium accumulator plant) at 24 or 29 ppm selenium, respectively, in alfalfa hay pellets did not alter the estrous cycle length, estrus behavior, progesterone or estrogen profiles, pregnancy rate or outcome of parturition (P > 0.05). There was wool loss in some ewes fed seleniferous pellets and the mean whole blood selenium levels were 0.45, 1.3 and 2.4 ppm, respectively, for control, A bisulcatus and sodium selenate; however, ewe condition and appearance remained good. All lambs appeared normal and the number of lambs born and the individual and total lamb weight averages were not significantly (P > 0.05) different between treatment groups and control group.
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