Document Detail

Effect of deposition site and sperm number on the fertility of sheep inseminated with liquid semen.
MedLine Citation:
PMID:  11913584     Owner:  NLM     Status:  MEDLINE    
The effect of the deposition site and the numbers of sperm on the fertility of sheep was tested in a field trial in which 1292 Norwegian crossbred ewes aged between six months and five-and-a-half years from 52 farms were inseminated with liquid semen after natural oestrus. Cervical insemination with 150 x 10(6) and 75 x 10(6) spermatozoa resulted in 25-day non-return rates of 63.7 and 56.1 per cent, and vaginal insemination gave non-return rates of 63.3 and 56.6 per cent, respectively. There was no significant difference between the cervical and vaginal inseminations, but the inseminations with 150 x 10(6) spermatozoa gave significantly higher non-return rates (P=0.004). There were significant differences between the non-return rates for different rams (P<0.0001) and farmers (P=0.0002) but the age of the ewe had no significant effect.
H Paulenz; T Adnøy; O H Fossen; L Söderquist; K Andersen Berg
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Veterinary record     Volume:  150     ISSN:  0042-4900     ISO Abbreviation:  Vet. Rec.     Publication Date:  2002 Mar 
Date Detail:
Created Date:  2002-03-26     Completed Date:  2002-08-27     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0031164     Medline TA:  Vet Rec     Country:  England    
Other Details:
Languages:  eng     Pagination:  299-302     Citation Subset:  IM    
Team Semin, Oslo, Norway.
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MeSH Terms
Administration, Intravaginal
Insemination, Artificial / methods,  veterinary*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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