Quantitative Observations On The Pulmonary Anatomy Of The Domestic Fowl And Other Ground-Dwelling Birds
The pulmonary stereology of the adult domestic fowl (Gallus gallus variant domesticus) , the Red Jungle Fowl (Gallus gallus) , the Muscovy Duck (Cairina moschata) , the White-breasted Water-Hen (Amaurornis phoenicurus), and the juveniles of the domestic fowl and Red Jungle Fowl were investigate...
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| Format: | Thesis |
| Language: | English English |
| Published: |
1987
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/12273/1/FPV_1987_2_.pdf |
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| Summary: | The pulmonary stereology of the adult domestic fowl
(Gallus gallus variant domesticus) , the Red Jungle Fowl
(Gallus gallus) , the Muscovy Duck (Cairina moschata) , the
White-breasted Water-Hen (Amaurornis phoenicurus), and the
juveniles of the domestic fowl and Red Jungle Fowl were
investigated. The lung of the domestic fowl was canpared
with that of the Red Jungle Fowl at day 1 , day 7, and day
30 . A multistage sampling technique was used for pulmonary
stereology. Standard stereological procedures of point
counting, intersection counting, and measurement of intercept length, were employed for estimating volume density, surface
area, and harmonic mean thickness respectively. The anatomical
diffusing capacity was estimated from Weibel's model.
The pulmonary stereological characteristics of the Red
Jungle Fowl are broadly similar to those of the domestic fowl,
but the Red Jungle Fowl has a higher specific volume of the
lung and a thinner blood-gas (tissue) barrier, with a higher
specific diffusing capacity of the barrier for oxygen than the
domestic fowl.
The lung of the White-breasted Water-Hen, a grounddwelling
bird, has stereological characteristics similar to
sane flying birds (non-passerine), thus showing that not
all ground-dwelling birds have inferior pulmonary
stereological characteristics.
The domestic Muscovy Duck has pulmonary characteristics
which are broadly similar to those reported for other
Anseriformes, except for a greater thickness of the blood-gas
(tissue) barrier. The specific oxygen diffusing capacity of
the blood-gas (tissue) barrier was well below that of other
anseriforms and birds in general.
The juvenile of both the domestic fowl and the Red
Jungle fowl has a thicker blood-gas (tissue) barrier than the
adult. In each age group examined, the blood-gas (tissue)
barrier was thicker in the domestic fowl than in the Red
Jungle Fowl. |
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