Immunoreactive neuropeptide systems in avian embryos (domestic mallard, domestic fowl, Japanese quail)

1982 ◽  
Vol 223 (2) ◽  
pp. 287-303 ◽  
Author(s):  
S. Bl�hser ◽  
M. Heinrichs
Keyword(s):  
Japanese Quail ◽  
Domestic Fowl ◽  
Avian Embryos ◽  
Domestic Mallard

Effect of accelerative forces on avian embryogenesis

1965 ◽  
Vol 20 (6) ◽  
pp. 1232-1240 ◽  
Author(s):  
E. L. Besch ◽  
A. H. Smith ◽  
S. Goren
Keyword(s):  
Growth Rate ◽  
Embryo Development ◽  
Centrifugal Force ◽  
Japanese Quail ◽  
Domestic Fowl ◽  
Impact Force ◽  
Centrifugal Forces ◽  
Loss Of Weight ◽  
Force Impact ◽  
Avian Eggs

Fertile avian eggs from the domestic fowl and the Japan quail showed a measurable loss of weight and a reduction atchability when exposed to varying intensities of centrifugal force for 10 min. Both of these effects are proportional to intensity of the applied force. Coturnix (Japanese quail) chicks hatched from eggs exposed to centrifugal forces prior to incubation displayed no growth rate differences from those chicks from control eggs. Impact force necessary to cause failure of embryo development is in excess of shell failure stress. The effect of subacute acceleration and impact deceleration is not manifested in the same manner in embryonated as in fertile eggs. mechanical force; impact deceleration; centrifugal force; avian eggs; hatchability; embryo development Submitted on December 31, 1964

scholarly journals Degradation of Some Pesticides in Avian Embryos

1999 ◽  
Vol 47 (1) ◽  
pp. 117-122
Author(s):  
L. Várnagy
Keyword(s):  
Analytical Chemistry ◽  
Japanese Quail ◽  
Degradation Rate ◽  
Normal Development ◽  
Morphological Changes ◽  
Avian Embryos ◽  
Chemistry Data ◽  
Immersion Technique ◽  
Air Space

On day 9 or 12 of the hatching period different pesticides (parathion, methylparathion, carbendazim, 2,4-D-amine Na, phosmethylane) were applied in ecotoxicological trials. The formulations were either injected into the air space of pheasant, quail or hen eggs or hen eggs were treated by the immersion technique. The residues of pesticides were measured in samples on days 13, 14 and 16 of incubation of chicken and pheasant embryos, while the Japanese quail embryos were analysed on days 10-14 of incubation. Analytical chemistry data showed a varying degradation rate of the compounds in avian embryos of the same species. The residues directly affect the embryos, disturbing their normal development and causing pathophysiological and morphological changes.

Further Studies on the Ultrastructure of Harderian Gland in Adult Rats

1974 ◽  
Vol 32 ◽  
pp. 288-289
Author(s):  
Alfredo Feria-Velasco ◽  
Guadalupe Tapia-Arizmendi
Keyword(s):  
Fine Structure ◽  
Domestic Fowl ◽  
Animal Species ◽  
Acinar Cells ◽  
Harderian Gland ◽  
Myoepithelial Cells ◽  
The Other ◽  
Albino Rats ◽  
Adult Rats ◽  
Cell Components

The fine structure of the Harderian gland has been described in some animal species (hamster, rabbit, mouse, domestic fowl and albino rats). There are only two reports in the literature dealing on the ultrastructure of rat Harderian gland in adult animals. In one of them the author describes the myoepithelial cells in methacrylate-embbeded tissue, and the other deals with the maturation of the acinar cells and the formation of the secretory droplets. The aim of the present work is to analize the relationships among the acinar cell components and to describe the two types of cells located at the perifery of the acini.

The Quantitative Ultrastructure of the Heart Muscle of Japanese Quail by Hypergravitation, Hypodynamy and Combination

1990 ◽  
Vol 48 (3) ◽  
pp. 188-189
Author(s):  
Anton Bózner ◽  
Mikuláš Gažo ◽  
Jozef Dostál
Keyword(s):  
Japanese Quail ◽  
Heart Muscle ◽  
Relative Size ◽  
Combination Group ◽  
Control Group ◽  
Group V ◽  
Group Iii ◽  
Space Flights ◽  
Group I ◽  
Quantitative Ultrastructure

It is anticipated that Japanese quail /Coturnix coturnix japonica/ will provide animal proteins in long term space flights. Consequently this species of birds is of research interest of international space program INTERCOSMOS. In the year 1987 we reported on an experiment /2/ in which the effect of chronic acceleration of 2 G hypergravitation, the hypodynamy and the simultaneous effect of chronic acceleration and the location in the centre of the turntable of the centrifuge on the protein fractions in skeletal muscles was studied. The ultrastructure of the heart muscle was now in this experiments examined as well.Japanese quail cockerels, aged 48 days were exposed to 2 G hypergravitation /group IV/ in a 6,4 m diameter centrifuge, to hypodynamy /group III/ and their combination /group V/, respectively for 6 days / Fig.1/. The hypodynamy in group III was achieved by suspending the birds in jackets without contact the floor. The group II was located in the centre ofthe turntable of the centrifuge. The control group I. was kept under normal conditions. The quantitative ultrastructure of myocard was evaluated by the methods of Weibel/3/ - this enables to determine the number, relative size and volume of mitochondria volume of single mitochondria, defficiency of mitochondrial cristae and volume of myofibrils.

Sign in / Sign up

Export Citation Format

Share Document