4 research outputs found
Arsenic in Eggs and Excreta of Laying Hens in Bangladesh: A Preliminary Study
The aim of this study was to detect arsenic concentrations in feed,
well-water for drinking, eggs, and excreta of laying hens in
arsenic-prone areas of Bangladesh and to assess the effect of
arsenic-containing feed and well-water on the accumulation of arsenic
in eggs and excreta of the same subject. One egg from each laying hen
(n=248) and its excreta, feed, and well-water for drinking were
collected. Total arsenic concentrations were determined by atomic
absorption spectrophotometer, coupled with hydride generator. Effects
of arsenic-containing feed and drinking-water on the accumulation of
arsenic in eggs and excreta were analyzed by multivariate regression
model, using Stata software. Mean arsenic concentrations in
drinkingwater, feed (dry weight [DW]), egg (wet weight [WW]), and
excreta (DW) of hens were 77.3, 176.6, 19.2, and 1,439.9 ppb
respectively. Significant (p<0.01) positive correlations were found
between the arsenic contents in eggs and drinking-water (r=0.602),
drinking-water and excreta (r=0.716), feed and excreta (r=0.402) as
well as between the arsenic content in eggs and the age of the layer
(r=0.243). On an average, 55% and 82% of the total variation in arsenic
contents of eggs and excreta respectively could be attributed to the
variation in the geographic area, age, feed type, and arsenic contents
of drinking-water and feed. For each week\u2019s increase in age of
hens, arsenic content in eggs increased by 0.94%. For every 1%
elevation of arsenic in drinking-water, arsenic in eggs and excreta
increased by 0.41% and 0.44% respectively whereas for a 1% rise of
arsenic in feed, arsenic in eggs and excreta increased by 0.40% and
0.52% respectively. These results provide evidence that, although high
arsenic level prevails in well-water for drinking in Bangladesh, the
arsenic shows low biological transmission capability from body to eggs
and, thus, the value was below the maximum tolerable limit for humans.
However, arsenic in drinking-water and/or feed makes a significant
contribution to the arsenic accumulations in eggs and excreta of laying
hens
Arsenic in Eggs and Excreta of Laying Hens in Bangladesh: A Preliminary Study
The aim of this study was to detect arsenic concentrations in feed,
well-water for drinking, eggs, and excreta of laying hens in
arsenic-prone areas of Bangladesh and to assess the effect of
arsenic-containing feed and well-water on the accumulation of arsenic
in eggs and excreta of the same subject. One egg from each laying hen
(n=248) and its excreta, feed, and well-water for drinking were
collected. Total arsenic concentrations were determined by atomic
absorption spectrophotometer, coupled with hydride generator. Effects
of arsenic-containing feed and drinking-water on the accumulation of
arsenic in eggs and excreta were analyzed by multivariate regression
model, using Stata software. Mean arsenic concentrations in
drinkingwater, feed (dry weight [DW]), egg (wet weight [WW]), and
excreta (DW) of hens were 77.3, 176.6, 19.2, and 1,439.9 ppb
respectively. Significant (p<0.01) positive correlations were found
between the arsenic contents in eggs and drinking-water (r=0.602),
drinking-water and excreta (r=0.716), feed and excreta (r=0.402) as
well as between the arsenic content in eggs and the age of the layer
(r=0.243). On an average, 55% and 82% of the total variation in arsenic
contents of eggs and excreta respectively could be attributed to the
variation in the geographic area, age, feed type, and arsenic contents
of drinking-water and feed. For each week’s increase in age of
hens, arsenic content in eggs increased by 0.94%. For every 1%
elevation of arsenic in drinking-water, arsenic in eggs and excreta
increased by 0.41% and 0.44% respectively whereas for a 1% rise of
arsenic in feed, arsenic in eggs and excreta increased by 0.40% and
0.52% respectively. These results provide evidence that, although high
arsenic level prevails in well-water for drinking in Bangladesh, the
arsenic shows low biological transmission capability from body to eggs
and, thus, the value was below the maximum tolerable limit for humans.
However, arsenic in drinking-water and/or feed makes a significant
contribution to the arsenic accumulations in eggs and excreta of laying
hens