scholarly journals Fear-Related Responses of White Leghorn Hens of Several Genetic Stocks in Five-Bird Cages and Associations with Quantitative Traits

1984 ◽  
Vol 63 (9) ◽  
pp. 1679-1688 ◽  
Author(s):  
S.K. KUJIYAT ◽  
J.V. CRAIG ◽  
A.D. DAYTON
Keyword(s):  
Quantitative Traits ◽  
White Leghorn ◽  
Genetic Stocks

scholarly journals Fearful and Associated Responses of White Leghorn Hens: Effects of Cage Environments and Genetic Stocks ,

1986 ◽  
Vol 65 (12) ◽  
pp. 2199-2207 ◽  
Author(s):  
J.V. CRAIG ◽  
J. VARGAS VARGAS ◽  
G.A. MILLIKEN
Keyword(s):  
White Leghorn ◽  
Genetic Stocks

Dexamethasone Effect on Embryonic Chick Respiratory Epithelium

1982 ◽  
Vol 40 ◽  
pp. 248-249
Author(s):  
M.R. Richter ◽  
R.V. Blystone
Keyword(s):  
Lung Development ◽  
Critical Role ◽  
Respiratory Epithelium ◽  
Chick Embryos ◽  
Embryonic Chick ◽  
White Leghorn ◽  
Lung Maturation ◽  
Synthetic Analogs ◽  
Lung Physiology ◽  
Avian Lung

Dexamethasone and other synthetic analogs of corticosteroids have been employed clinically as enhancers of lung development. The mechanism(s) by which this steroid induction of later lung maturation operates is not clear. This study reports the effect on lung epithelia of dexamethasone administered at different intervals during development. White Leghorn chick embryos were used so as to remove possible maternal and placental influences on the exogenously applied steroid. Avian lung architecture does vary from mammals; however, respiratory surfactant produced by the lung epithelia serves an equally critical role in avian lung physiology.

Improved preservation of the otolithic membranes

1987 ◽  
Vol 45 ◽  
pp. 914-915
Author(s):  
G. M. Cohen ◽  
J. S. Grasso ◽  
M. L. Domeier ◽  
P. T. Mangonon
Keyword(s):  
Toluidine Blue ◽  
Potassium Phosphate ◽  
Vestibular Function ◽  
Spatial Relations ◽  
White Leghorn ◽  
Supporting Cells ◽  
Semithin Sections ◽  
Micromechanical Models ◽  
Soluble Components

Any explanation of vestibular micromechanics must include the roles of the otolithic and cupular membranes. However, micromechanical models of vestibular function have been hampered by unresolved questions about the microarchitectures of these membranes and their connections to stereocilia and supporting cells. Otolithic membranes are notoriously difficult to preserve because of severe shrinkage and loss of soluble components. We have empirically developed fixation procedures that reduce shrinkage artifacts and more accurately depict the spatial relations between the otolithic membranes and the ciliary bundles and supporting cells.We used White Leghorn chicks, ranging in age from newly hatched to one week. The inner ears were fixed for 3-24 h in 1.5-1.75% glutaraldehyde in 150 mM KCl, buffered with potassium phosphate, pH 7.3; when postfixed, it was for 30 min in 1% OsO4 alone or mixed with 1% K4Fe(CN)6. The otolithic organs (saccule, utricle, lagenar macula) were embedded in Araldite 502. Semithin sections (1 μ) were stained with toluidine blue.

Registration of N614, A3 N615, N616, and N617 Shattercane Genetic Stocks with Cytoplasmic or Nuclear Male Sterility and Juicy or Dry Midribs

2013 ◽  
Vol 7 (2) ◽  
pp. 245-249 ◽  
Author(s):  
Scott E. Sattler ◽  
John J. Toy ◽  
James Aketch Okeno ◽  
Deanna L. Funnell-Harris ◽  
Jeffrey F. Pedersen
Keyword(s):  
Male Sterility ◽  
Nuclear Male Sterility ◽  
Genetic Stocks
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