Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
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Morphometric Study of Seminiferous Tubules in Pigeon, Pheasant, and Chicken

비둘기, 꿩 및 닭의 곱슬정세관에 관한 형태계측학적 연구

  • 김인식 (전북대학교 수의학과 해부학교실) ;
  • 김지현 (전북대학교 수의학과 해부학교실) ;
  • 이영훈 (전북대학교 수의학과 해부학교실) ;
  • 정옥봉 (전북대학교 수의학과 해부학교실) ;
  • 양홍현 (전북대학교 수의학과 해부학교실)
  • Published : 2000.04.01
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Abstract

The testis is an extremely heterogeneous organ, containing numerous compartments types. Morphometric studies were performed of 3 avian species (pigeon, pheasant and chicken) to determine volume density absolute volume, numerical density, total number of serminiferous tubule components, and sperm production, especially those related to the Sertoli cell, and to make comparisons among the species. Volume density of seminiferous tubule components per testis was determined by point counting method. Testis volume and sperm production were measured by routine techniques. Numerical density (the number of cells per unit volume of testis) of seminiferous tubule components per testis was determined by morphometry (Floderus method). The volume density of seminiferous tubules per testis was 91.58, 92.18 and 94.21% in pigeon, pheasant, and chicken, respectively. The volume density of spermatogonium, spermatocyte, spermatid, spermatozoon, and Sertoli cell did not produce significant changes in the three species. The absolute volume of spermatogonium, spermatocyte, spermatid, and Sertoli cell showed significant changes in the three species (p<0.05). The average volume of Sertoli cell ranged from 758.34(pheasant) to 1,212.9 ㎛$^3$(chicken) and was not significantoy different in the three species(p>0.05). The number of Sertoli cells per testis showed significant differences in the three species : 34.52 $\times$10(sup)6, 186.82$\times$10(sup)6, 810.62$\times$10(sup)6 in pigeon, pheasant, and chicken, respectively(p<0.05). The sperm production was significantly different in the three species : 3,018$\times$10(sup)6, 993.9$\times$10(sup)6, and 8.9$\times$10(sup)6 in chicken, pheasant, and pigeon, respectively(p<0.05). These results suggest that number of Sertoli cells may be more important than Sertoli cell size in explaining the difference in sperm production among the three species.

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References

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