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Effects of chronic progesterone injection on performance, plasma hormones and ovarian morphology of feed-satiated and fed restricted broiler breeder hens

Published online by Cambridge University Press:  22 November 2017

M Zaghari ,
R Taherkhani  and
S Honarbakhsh
M Zaghari*
Affiliation:
University of Tehran, Tehran, Islamic Republic of Iran
R Taherkhani
Affiliation:
University of Tehran, Tehran, Islamic Republic of Iran
S Honarbakhsh
Affiliation:
University of Tehran, Tehran, Islamic Republic of Iran
*
Email: mzaghari@ut.ac.ir
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Extract

Single injection of chronic dose of P4 in laying hens during the preovulatory open period has been shown to have positive effects on inducing a preovulatory LH surge and ovulation (Johnson et al., 1985). However, chronic injection of P4 has been shown to increase baseline concentrations of P4 and result in arrested laying and disrupted distribution of hierarchical follicles in turkeys (Bacon and Liu, 2004). The current study was designed to examine the effects of a simulated progesterone surge (by injection of chronic dose of P4) on broiler breeder hens performance, ovary morphology, plasma metabolites and hormones concentrations in either feed-satiated or feed-restricted hens.

Type
Theatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2009 , April 2009 , pp. 204
Copyright
Copyright © The British Society of Animal Science 2009

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References

Bacon, W. L., and Liu, H. K.. 2004. Progesterone injection and egg production in turkey hens. Biology of Reproduction 71, 878–886.Google Scholar
SAS Institute. 2002: SAS/STAT User’s Guide: Statistics. Release 9.00 ed. SAS Institute Inc., Cary, NC, USA.Google Scholar
Johnson, P. A., Johnson, A. L., and Tienhoven, A. van. 1985. Evidence for a positive feedback interaction between progesterone and luteinizing hormone in the induction of ovulation in the hen, Gallus domesticus. General and Comparative Endocrinology 58, 478–485.Google Scholar