Investigation of sex reversal in layer chickens in Bangladesh.

@article{Shaikat2015InvestigationOS,
  title={Investigation of sex reversal in layer chickens in Bangladesh.},
  author={A. H. Shaikat and M. A. Hoque and S. Islam and M. Hassan and S. Khan and A. Saifuddin and M. Yousuf and M. Al-Mamun and Mamdud Hossain},
  journal={Advances in Animal and Veterinary Sciences},
  year={2015},
  volume={3},
  pages={245-252}
}
| Sex reversal is evolutionary a rear event in animal and human. To understand the magnitude of occurrence, a total of 28 sex reversed layer chickens were identified in two poultry farms during 2011 over a total population of 3000 layer chickens in Ramu, Cox’s Bazar. The chickens were randomly divided into two equal groups. Case chickens (Group I) were separated from normal chickens for 15 days and were monitored for phenotypic characteristics such as body weight, comb length, comb width, and… Expand

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References

SHOWING 1-10 OF 37 REFERENCES
Environment and sex determination in farmed fish.
  • J. Baroiller, H. D'cotta
  • Biology, Medicine
  • Comparative biochemistry and physiology. Toxicology & pharmacology : CBP
  • 2001
TLDR
In gonochoristic fish, steroid hormones with estrogens in females and 11-oxygenated androgens in males, are probably key physiological steps in the regulation of gonadal sex differentiation. Expand
Sex determination: insights from the chicken.
  • C. Smith, A. Sinclair
  • Biology, Medicine
  • BioEssays : news and reviews in molecular, cellular and developmental biology
  • 2004
TLDR
The Z-linked gene, DMRT1, supports the Z-dosage model of avian sex determination, and two novel W-linked genes, ASW and FET1, represent candidate female determinants. Expand
Evidence of sex reversal in the gonads of chicken embryos after oestrogen treatment as detected by expression of lutropin receptor.
TLDR
Results indicate that early expression of the lutropin receptor is regulated by oestrogen. Expand
Potential mechanisms of avian sex manipulation
  • T. W. Pike, M. Petrie
  • Biology, Medicine
  • Biological reviews of the Cambridge Philosophical Society
  • 2003
TLDR
The aim of this review is to consider the potential mechanisms birds may use to manipulate the sex of their progeny, and the possible role played by maternal hormones, and to provide starting points for testing the hypotheses both experimentally and physiologically. Expand
Molecular patterns of sex determination in the animal kingdom: a comparative study of the biology of reproduction
TLDR
Observations have been described not only in mammals, but also in other vertebrates, emphasizing the need for further study of both normal hormonal regulators of sexual phenotype and patterns of epigenetic/environmental disruption. Expand
The effect of heat stress on ovarian function of laying hens.
TLDR
Short and long heat exposure caused significant hyperthermia and reduction of egg production, egg weight, ovarian weight, and the number of large follicles, and a significant reduction in plasma progesterone and testosterone was detected 2 d after exposing the birds to heat stress, and plasma 17beta-estradiol was significantly reduced 14 d after initiation of heat stress. Expand
Plasma estradiol-17β level in the domestic fowl ☆
TLDR
Using healthy white Leghorn chickens the estradiol-17β level in plasma were determined by radioimmunoassay and the dependency on age and sex examined and the significance with respect to plasma lipids and electrophoretic mobility of serum lipoprotein is shown. Expand
Plasma testosterone level in cocks and hens.
TLDR
The plasma testosterone level of two year old cocks is nearly three times higher than that of the laying hen of equal age and the difference of the migration pattern may be explained by the variable composition of the serum proteins and lipids and in addition it was found to be hormone dependent. Expand
Testosterone in Females: Mediator of Adaptive Traits, Constraint on Sexual Dimorphism, or Both?
TLDR
It is hypothesized that sensitive traits could become subject to selection after a natural change in T and that traits with opposing fitness consequences in males and females could constrain dimorphism. Expand
Disorders of sex development: a new definition and classification.
  • I. Hughes
  • Biology, Medicine
  • Best practice & research. Clinical endocrinology & metabolism
  • 2008
TLDR
In this chapter new facets of gonadal dysgenesis and novel defects in steroid biosynthesis are reviewed in relation to the DSD classification, and options for early, non-invasive fetal sexing are described. Expand
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