Document Detail

The effect of Gn-RH on the pregnancy rate of artificially inseminated cows.
MedLine Citation:
PMID:  356409     Owner:  NLM     Status:  MEDLINE    
One hundred and nine pure bred Holstein Friesians were injected intramuscularly with 0.125 mg of a synthetic Gn-RH analogue at the time of the first service to study the effect of Gn-RH on the fertility of inseminated cows. Sixty-four cows or 58.7 per cent were diagnosed as pregnant after one insemination compared to 54 animals or 49.5 per cent in the untreated control group. Total pregnancy rate of 81.65 per cent was 8.3 per cent higher than in the controls, while the services per conception rate improved from 1.49 to 1.39. Gn-RH administration at the time of oestrus could improve herd fertility through its including effect on follicular rupture and regulatory influence on ovarian function.
H F Schels; D Mostafawi
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The Veterinary record     Volume:  103     ISSN:  0042-4900     ISO Abbreviation:  Vet. Rec.     Publication Date:  1978 Jul 
Date Detail:
Created Date:  1978-10-18     Completed Date:  1978-10-18     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0031164     Medline TA:  Vet Rec     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  31-2     Citation Subset:  IM    
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MeSH Terms
Cattle / physiology*
Fertility / drug effects
Gonadotropin-Releasing Hormone / pharmacology*
Insemination, Artificial / veterinary*
Pregnancy, Animal*
Reg. No./Substance:
33515-09-2/Gonadotropin-Releasing Hormone

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

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