PMID: 20128503Feb 5, 2010Paper

Daily sperm production of the domestic fowl (Gallus domesticus) as determined by quantitative testicular histology and homogenate methods

Pakistan Journal of Biological Sciences : PJBS
Eme E Orlu, G N Egbunike

Abstract

The daily spermatozoa production was studied in 20 each of sexually matured barred Plymouth Rock and Nigerian indigenous breeds of domestic fowl using both the histometric and testicular homogenate methods. The exotic cocks were significantly (p < 0.01) heavier than the locals with the respective values of 2.11 +/- 0.05 and 1.58 +/- 0.02 kg. The exotic also had larger (p < 0.01) gross testicular weight (21.58 +/- 1.46 vs. 12.56 +/- 0.91 g), paired testicular parenchymal weight (20.47 +/- 0.40 vs. 11.96 +/- 0.82 g) and paired tunica albuginea (1.11 +/- 0.18 vs. 0.60 +/- 0.11 g). The total length and the diameter of the seminiferous tubules were also significantly influenced (p < 0.01) by breed. The volume percent occupied by seminiferous tubules though higher in the exotic birds showed no statistical significance. Daily sperm production obtained from histometric method was highly influenced by breed with 2.41 +/- 1.17 x 10(9) and 0.76 +/- 0.71 x 10(9) for exotic and local cocks, respectively. The daily sperm productions calculated on the basis of homogenization-resistant spermatids were 1.85 +/- 0.22 for exotic and 0.73 +/- 0.11 for locals. Although, the difference in DSP values based on both methods was not statistically signif...Continue Reading

References

May 1, 1977·Journal of Animal Science·W E Berndtson
Apr 1, 1971·Journal of Reproduction and Fertility·G Igboeli, A M Rakha
Dec 1, 1968·Journal of Reproduction and Fertility·E E Swierstra
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Aug 1, 1980·The Journal of Urology·R P Amann, S S Howards
Feb 14, 2009·Evolution; International Journal of Organic Evolution·Stefan LüpoldTim R Birkhead

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