A sperm tail defect associated with infertility in a goat - case report

A. Molnár, P. Sarlós, G. Fáncsi, J. Rátky, Sz Nagy, A. Kovács

Research output: Contribution to journalArticle

14 Citations (Scopus)


Semen of an infertile Dutch White (Saanenthal) goat buck was examined. Light and electron microscopic examinations showed aberrations of the sperm tails resembling the so-called Dag or Dag-like defects described in several cattle breeds. Ejaculated semen showed that virtually all of the cells had strongly coiled or broken tails, or fractured midpieces. Ultrastructural investigations by transmission electron microscopy (TEM) showed uneven distribution of the mitochondria in the midpiece. Coiled tails were encapsulated by a common membrane, and dislocated axial fibres and different membranous structures were also present. The ultrastructural characteristics of the defective sperm tails, the missing parts of the axial fibre bundle and the misalignment of the mitochondria indicate that this first case reported in goat is similar to the Dag-like defect in cattle.

Original languageEnglish
Pages (from-to)341-348
Number of pages8
JournalActa veterinaria Hungarica
Issue number3
Publication statusPublished - 2001


  • Goat sperm
  • Light and electron microscopy
  • Tail defect

ASJC Scopus subject areas

  • veterinary(all)

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