A.S. Series 74-19
Hens fed diets containing various levels of two mercury sources from the time of hatching were studied during a second laying cycle. Early growth data and data pertaining to the first laying cycle were reported in the 1973 Poultry Day reports (A.S. Series 73-18). It was concluded from these earlier phases of the study that inorganic mercury at levels up to 20 ppm in the diet does not influence growth or egg production, quality and hatchability. Methylmercury at levels of 2.5 ppm or less also appeared to be well tolerated with no visible harmful effects. However, detrimental effects of higher levels became increasingly apparent with progression of that phase of the experiment.
Number of Pages
Department of Animal Science, Agricultural Experiment Station, South Dakota State University
Emerick, R. J.; Carlson, C. W.; Nelson, R. A.; and Holmquist, C. E., "Effects of Mercury on Production and Reproduction of Laying Hens--Second Egg Laying Cycle" (1974). South Dakota Poultry Field Day Proceedings and Research Reports, 1974. 12.