Akhtar M H, Danis C, Trenholm H L, Hartin K E
Centre for Food and Animal Research, Research Branch, Agriculture Canada, Ottawa, Ontario.
J Environ Sci Health B. 1992 Jun;27(3):235-53. doi: 10.1080/03601239209372777.
Lactating dairy cows were fed deltamethrin (2 or 10 mg kg-1 feed) for 28 consecutive days and deltamethrin residues measured in milk and tissues. Deltamethrin residues were higher relative to dose administered. The order of relative concentrations of deltamethrin in tissues, measured 1, 4, and 9 days after the last dose was: renal fat greater than subcutaneous fat greater than forequarter muscle greater than hindquarter muscle greater than liver greater than kidney. Depletion of deltamethrin residues in milk was very rapid indicating the half-life of the insectide of about 1 day. Trace amounts of deltamethrin metabolites 3-(2,2-dibromovinyl)-2,2-dimethylcyclopropane carboxylic acid (less than 0.0235 ppm) and 3-phenoxybenzoic acid (less than 0.034 ppm) were also detected in milk and tissues of treated cows.
给泌乳期奶牛连续28天饲喂溴氰菊酯（2或10毫克/千克饲料），并测定牛奶和组织中的溴氰菊酯残留量。相对于给药剂量，溴氰菊酯残留量较高。在最后一次给药后1天、4天和9天测量的组织中溴氰菊酯相对浓度顺序为：肾周脂肪＞皮下脂肪＞前肢肌肉＞后肢肌肉＞肝脏＞肾脏。牛奶中溴氰菊酯残留的消除非常迅速，表明该杀虫剂的半衰期约为1天。在处理过的奶牛的牛奶和组织中还检测到痕量的溴氰菊酯代谢物3-（2,2-二溴乙烯基）-2,2-二甲基环丙烷羧酸（小于0.0235 ppm）和3-苯氧基苯甲酸（小于0.034 ppm）。
