Uptake of polychlorinated dibenzo-p-dioxins and dibenzofurans in laying ducks.
Uptake of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in laying ducks was determined at different degree of feed contamination. To observe the extent of the transfer of 17 PCDD/Fs from feed to the duck eggs and duck meat, 18 ducks were divided into 3 groups (6 in each group) and fed feed with two different levels of PCDD/Fs. As a control, one group of ducks was fed with the non-contaminated feed for comparison, while the other 2 groups were exposed to the feed doped with EAF dusts (fly ash). The experiment lasted for 60 days, with an exposure duration of 41 days and the subsequent non-contaminated feed being given for an additional 19 days. PCDD/F levels in the eggs of the all 3 groups were observed to increase significantly on the 15th day. For the low contaminated group, PCDD/F levels reached 2.61 pg WHO-TEQ/g lipid at day 41, whereas those of the high contaminated group accounted exceeded 3 pg/g lipid on the 15th day. Furthermore, PCDD/Fs levels in the duck meat were analyzed before and after exposure duration, and at the end of the experiment. The results showed that the level of PCDD/F in the duck eggs and the duck meat may reach unacceptable levels due to the effect of accumulation, although the PCDD/Fs in the duck feed were at acceptable levels.
Shih
Shun-I
SI
Department of Environmental Engineering, Kun Shan University, Yung Kung, Tainan County, Taiwan. ssi10@mail.ksu.edu.tw
Wang
I-Ching
IC
Wu
Kuen-Yuh
KY
Li
Hsing-Wang
HW
Wang
Lin-Chi
LC
Chang-Chien
Guo-Ping
GP
D000821:Animal Feed / Q000032:analysis; D000818:Animals; D001572:Benzofurans / Q000493:pharmacokinetics*; D000072338:Dibenzofurans, Polychlorinated; D004041:Dietary Fats / Q000032:analysis; D004372:Ducks / Q000378:metabolism*; D004391:Dust / Q000032:analysis; D004531:Eggs / Q000032:analysis; D004785:Environmental Pollutants / Q000032:analysis; D005506:Food Contamination / Q000032:analysis; D008460:Meat / Q000032:analysis; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000493:pharmacokinetics; D012989:Soil Pollutants / Q000493:pharmacokinetics*
D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D004041:Dietary Fats; D004391:Dust; D004785:Environmental Pollutants; D000072317:Polychlorinated Dibenzodioxins; D012989:Soil Pollutants