oT
er
ie, OP A
‘Tutte 9.12.—DterSarics of Camms Activig io
2 retain perenne
p=
The gross bets and gumma activities of the
shell, albumen and yolk were measured in the
iin
He HF
a
Yokes...
Alpemon........_....
s|6—ClC§)lctit
16
3
|
4
8
Aest 50) eggs obtained, and the gamma activity
of the shell wae measured in the remainder of
the eggs. An increasing amount of gammaactivity appeared in the shells of the first few
eggs laid by each hen.
The maximum gamma
| Bers
activity was usually noted in about the eighth
egg laid. After the activity reached a maxi-
Sawms
mem value, the subsequent eggs in the series
showed a general decline in activity. Two examples of this phenomenon are illustrated in
Figure 5.6.
The highest gamma activity fuund in as sinal= cuy shell was 66:4) counts per minute,
measured at 60 days post detonation. For a
as was anticipated.
The average distribution
‘11. The results of the radiochemical analysis
of two egys are presented in Table 5.12.
The alkaline earths are the principal fission
products depesited in the shell. In the albumen
and yolk, the beta activity contributed by the
alkaline earths was only a little greater than
that aseociated with the rare earths.
The pattern of deposition of the radioactivity
within the egg was also studied by means of
autoradiographs. .\ series of 50 eggs were
hard boiled, sectioned, and autoradiographs
were prepared of the cut surfaces. Only four
of the yolks of these 30 eggs were sufficiently
radioactive to produce autoradiographs (see
Fig. 3.7). These 4 eggs were laid on sucressive days by the same hen. There is a correlation between the rings of radioactivity in the
yolk and those of pigwent
The amount of actiity removed from the
beady of the ikea through egg laying is very
mini om
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xumma energy of approximately | mev, this figure corresponds to 0.0Tpc. The yolks and albamens had much less activity than the shells,
of gamma activity in the eggs is given in Table
|
Albumen ||
46!
:
122 ,
a2:
2, 178
316
much greater than the amount excretedin the
urine and feces during the period of this study.
Evy production in the chicken represents a
unique form of natural decontamination.
5.46
Fertilicy
Chici
sad
Haechabilicy
Scudies
ins
Fertility studies on the contaminated chickens were begun 314 months post detonation,
with the mating of hens and roosters and the incubation of the eggs obtained. In the first
clutch of 20 eggs, 4 were hatched. One of the
chicks had the cnppling slipped-tendon condition, “congenital perosis,” which 18 not uncommon. Radioanalysis of the chick timues tndicated that only a barely detectable a iount of
radioactive material was transferre. to the
chick, although the muther ben had at this time
ah apprectable contamination.
In anther Laich oa mentbs post detonation,
1S ogy were incubated.
Of thaw. 2s were in-