Reduced percentage hen-day production and feed intake
are two signs of Se toxicity in laying hens. Arnold
et al. (1973) reported a decrease in percentage hen-day
production when hens were supplemented with 8 ppm
of SS but not when supplemented at 2 ppm of SS. Ort and
Latshaw (1978) reported no adverse effects on percentage
hen-day production in hens supplemented with 0, 0.1, 1,
3, 5, or 7 ppm of SS, but percentage hen-day production
was decreased by 9 ppm of SS
Reduced percentage hen-day production and feed intakeare two signs of Se toxicity in laying hens. Arnoldet al. (1973) reported a decrease in percentage hen-dayproduction when hens were supplemented with 8 ppmof SS but not when supplemented at 2 ppm of SS. Ort andLatshaw (1978) reported no adverse effects on percentagehen-day production in hens supplemented with 0, 0.1, 1,3, 5, or 7 ppm of SS, but percentage hen-day productionwas decreased by 9 ppm of SS
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