Avian Hormones

  • Frederick C. Leung
Part of the Basic Life Sciences book series


During recent years, genetic engineering technology has come into rou tine use at basic research laboratories throughout the world (5). It is expected that this technology will find practical application in the agricultural industries in the near future (16,64). With the aid of recombinant DNA technology, scientists have been able to express exogenous genes of interest in both prokaryotic and eukaryotic cell systems (5,37). Such expression systems could conceivably provide large quantities of gene prod-ucts for the study of biological phenomena and presumably for use as commercial products. Scientists have been able to insert exogenous genes of interest into animal genomes, either by direct injection into the pronuclei of fertilized eggs or by using a retroviral vector as carrier (1,11,17,21, 51). Thus, with the rapid advance of recombinant technology, the techniques for producing a large (unlimited) quantity of gene products for agricultural use are available, as are the techniques for inserting desirable genes into agricultural animals. The question of which are the most desirable genes remains open. However, the sites of integration and the fine control of expression of the exogenous genes that are necessary to make such technology applicable to the agricultural industry require further research and experimentation. This chapter will discuss the hormonal regulation of growth in chickens. Due to space limitations, the author will limit the discussion to those hormones that have been reported to influence growth in the chicken. These include growth hormone, thyroid hormones, insulin, and glucocorticoids.


Growth Hormone Thyroid Hormone Body Weight Gain Domestic Fowl Gallus Domesticus 
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Copyright information

© Plenum Press, New York 1986

Authors and Affiliations

  • Frederick C. Leung
    • 1
  1. 1.Animal PhysiologyMerck, Sharp & Dohme Research LaboratoriesRahwayUSA

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