Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Physiological differences in late embryos from turkey breeders at different ages

V L Christensen1, W E Donaldson, J P McMurtry

  • 1Department of Poultry Science, North Carolina State University, Raleigh 27695-7608, USA.

Poultry Science
|February 1, 1996
PubMed
Summary

As breeder hens age, embryonic viability declines due to physiological changes in turkey embryos. These changes, including altered respiration and metabolism, impact hatchability.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Zona pellucida protein B2 messenger ribonucleic acid expression varies with follicular development and granulosa cell location.

Poultry science·2017
Same author

Effects of dietary lead, cadmium, mercury, and selenium on fatty acid composition of blood serum and erythrocyte membranes from chicks.

Biological trace element research·2013
Same author

Changes in organ nonprotein sulfhydryl and glutathione concentrations during acute and chronic administration of inorganic lead to chicks.

Biological trace element research·2013
Same author

[The effects of dietary methionine and glycine on lead toxicity in choline-deficient chicks].

Biological trace element research·2013
Same author

Metabolic and hormonal responses of growing modern meat-type chickens to fasting.

British poultry science·2013
Same author

Oviductal expression of avidin, avidin-related protein-2, and progesterone receptor in turkey hens in relation to sperm storage: effects of oviduct tissue type, sperm presence, and turkey line.

Poultry science·2011

Area of Science:

  • Poultry Science
  • Embryology
  • Animal Physiology

Background:

  • Hatchability in turkey breeder hens declines with increasing hen age.
  • Physiological mechanisms in embryos are critical for successful hatching.

Purpose of the Study:

  • To investigate physiological differences in turkey embryos from hens of varying ages.
  • To identify associations between hen age, embryonic physiology, and hatchability decline.

Main Methods:

  • Measured embryonic viability, mortality rates, and oxygen consumption.
  • Assessed eggshell conductance, hepatic and cardiac glycogen, and plasma glucose.
  • Analyzed plasma concentrations of thyroxine (T4) and triiodothyronine (T3) in embryos.

Main Results:

Related Experiment Videos

  • Embryonic viability decreased with hen age, with increased mortality around oxygen consumption plateau and pipping.
  • Eggshell conductance increased with hen age, suggesting altered embryonic respiration.
  • Glycogen and glucose levels decreased, while T3 levels increased in embryos from older hens.

Conclusions:

  • Declines in turkey breeder hen hatchability are linked to age-related physiological changes in embryos.
  • Thyroid hormone influences on carbohydrate metabolism and growth may contribute to decreased embryonic viability in older hens.