Semen characteristics and production of germ cells in male sheep-goat chimeras

G. B. Anderson, D. L. Anderson, Robert Bondurant, J. M. Cash, L. A. MacLaren, A. L. Moyer, Cecilia Penedo

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Semen from 11 male sheep-goat chimeras and one male sheep-goat hybrid-sheep chimera was evaluated on criteria commonly used as in vitro measures of semen quality. In addition, the species origin of germ cells was determined. Five males that were sex chimeras produced spermatozoa only from their XY cells. Three XY/XY sheep-goat males were shown by electrophoretic separation of sperm isozymes to produce both sheep and goat spermatozoa; one male produced live young from both ewes and does inseminated with his semen. The sheep-hybrid male produced only sheep spermatozoa. Significant variation in semen quality was observed among individual males, but semen characteristics were not strictly associated with the male's sex chromosome complement, the species origin of his gametes or the degree of somatic chimerism. These results demonstrate that male interspecies sheep-goat chimeras are fertile and that XY/XY chimeras can produce fertile gametes of both species.

Original languageEnglish (US)
Pages (from-to)31-41
Number of pages11
JournalAnimal Reproduction Science
Volume40
Issue number1-2
DOIs
StatePublished - Jan 1 1995

Fingerprint

chimerism
Semen
Goats
Germ Cells
semen
germ cells
Sheep
goats
sheep
Spermatozoa
spermatozoa
Semen Analysis
Chimerism
Sex Chromosomes
sex chromosomes
Isoenzymes
chromosome number
isozymes
ewes
gender

Keywords

  • Chimera
  • Fertility
  • Germline
  • Semen characteristics
  • Sheep-goat

ASJC Scopus subject areas

  • Food Animals
  • Animal Science and Zoology
  • Endocrinology

Cite this

Semen characteristics and production of germ cells in male sheep-goat chimeras. / Anderson, G. B.; Anderson, D. L.; Bondurant, Robert; Cash, J. M.; MacLaren, L. A.; Moyer, A. L.; Penedo, Cecilia.

In: Animal Reproduction Science, Vol. 40, No. 1-2, 01.01.1995, p. 31-41.

Research output: Contribution to journalArticle

Anderson, G. B. ; Anderson, D. L. ; Bondurant, Robert ; Cash, J. M. ; MacLaren, L. A. ; Moyer, A. L. ; Penedo, Cecilia. / Semen characteristics and production of germ cells in male sheep-goat chimeras. In: Animal Reproduction Science. 1995 ; Vol. 40, No. 1-2. pp. 31-41.
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