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Practical aspects of fertility in poultry

Published online by Cambridge University Press:  11 April 2017

J.P. Brillard
J.P. Brillard
Affiliation:
Institut National de la Recherche Agronomique, Station de Recherches Avicoles, 37380, Nouzilly, France, e-mail: [email protected]
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Abstract

Birds, reptiles and insects (e.g. Hymenoptera) share fundamental similarities in their reproductive strategies due to the presence, in the female tract, of specialized sites in which spermatozoa may reside for prolonged periods upon a single mating. In avian species, two distinct storage sites are present, one located in the utero-vaginal junction and the other in the lower portion of the infundibulum. At both sites, spermatozoa are stored in sperm storage tubules (SSTs) which are discrete, generally non-branched invaginations of the luminal epithelium (see review by Bakst et al., 1994). The SSTs located in the uterovaginal junction are considered as the main site of residence of spermatozoa upon their deposition in the lower portion of the vagina. The fertilizing potential of females along the reproductive season is at first dependent on their ability to store and maintain adequate populations of spermatozoa in their SST in order to repeatedly provide the site of fertilization with sufficient numbers of “fit” spermatozoa after each ovulation. As a consequence in poultry species, eggs from females with prolonged sperm storage potential have also a natural tendency to maintain optimal fertility rates for prolonged periods. This situation may be highly desirable to sustain high fertility in the case of partial failure of the males during the season.

This review is an attempt to address the main intrinsic and extrinsic factors capable of favouring or altering fertility in poultry species. Unfortunately, most of the information available is obtained from two species, namely the domestic fowl and turkey, which, in certain circumstances, may not reveal enough to pinpoint the controlling factors of fertility in other poultry species.

Keywords

fertilityreproductive seasonreproductionsperm storagesemen
Type
Reviews
Information
World's Poultry Science Journal , Volume 59 , Issue 4 , December 2003 , pp. 441 - 446
Copyright
Copyright © Cambridge University Press 2003

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Footnotes

This paper was first presented at the conference of the Incubation & Fertility Research Group (WPSA Working Group No 6: Reproduction) on September 12-13th 2002 and is also published in ‘Practical Aspects of Commercial Incubation in Poultry’ edited by D.C. Deeming, Ratite Conference Books 2002.

References

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