title: Concentration of orally administered and chronically fed 95mTc in Japanese quail eggs.
abstract: A chronic feeding study using 95mTc incorporated into alfalfa and an acute study where 95mTc was amended to alfalfa showed that about 8.4% of ingested Tc was transferred to eggs. After 10 days of chronic feeding, 80% of the Tc was in yolk, 20% in albumin and less than 1% in shell and associated membranes. At necropsy, technetium concentrations in the three largest oocytes were nearly equal. The biological half-time for Tc was about one to two days in acute studies. Results from the chronic feeding study also indicated that Tc levels in albumin reach a maximum between three and five days while maximum yolk concentration is attained in about six to seven days. Albumin concentrations declined about 20-50% after Day 6.
mesh_terms: D000284:Administration, Oral; D000821:Animal Feed; D000818:Animals; D003370:Coturnix / Q000378:metabolism*; D004531:Eggs / Q000032:analysis*; D005260:Female; D005507:Food Contamination, Radioactive / Q000032:analysis*; D011784:Quail / Q000378:metabolism*; D013667:Technetium / Q000008:administration & dosage / Q000032:analysis*; D013997:Time Factors
chemical_list: D013667:Technetium