Panter K E, James L F, Mayland H F
United States Department of Agriculture, Poisonous Plant Research Laboratory, Logan, Utah 84321, USA.
Vet Hum Toxicol. 1995 Feb;37(1):30-2.
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.
以苜蓿干草颗粒形式分别以24 ppm或29 ppm硒的亚硒酸钠或双槽黄芪（一种硒积累植物）饲喂处于发情周期的母羊，并未改变发情周期长度、发情行为、孕酮或雌激素水平、妊娠率或分娩结果（P>0.05）。一些饲喂含硒颗粒的母羊出现掉毛现象，对照组、双槽黄芪组和亚硒酸钠组的平均全血硒水平分别为0.45 ppm、1.3 ppm和2.4 ppm；然而，母羊的身体状况和外观仍然良好。所有羔羊看起来都正常，各处理组与对照组之间出生的羔羊数量、个体羔羊体重平均值和总羔羊体重平均值均无显著差异（P>0.05）。
