Document Detail

Fertility in zebu cattle (Bos indicus) after prostaglandin administration and artificial insemination.
MedLine Citation:
PMID:  10409417     Owner:  NLM     Status:  MEDLINE    
A total of 137 cycling zebu cows, each receiving a single dose of prostaglandin PGF(2alpha)were used in an oestrus synchronization programme on three different farms. Of the cows on the three farms, 60.6 and 90.5% showed overt oestrus and luteolysis, respectively. Pregnancy rate to fixed time inseminations following single injection of PGF(2alpha)was 61.4% for farm 1, significantly higher than the values of 45.7 and 46.9% for farms 2 and 3, respectively. The pregnancy rates to second service of rebred cows were 53.3, 50.0 and 50.0% for the three farms, respectively, with no significant differences between each. Fertility classification of the cows based on progesterone (P(4)) concentration showed that 6.6% of cows on the three farms were incorrectly diagnosed as having corpora lutea; 2.9% of them had incomplete luteolysis and 5.1% may have lost their embryos between days 21 and 45 post-insemination. The pregnancy rate was 10% higher in the rainy season than in the dry season. Cows with body condition scores of 3 and 4 had a higher overall pregnancy rates than those with a body condition score of 2. The findings of this study further confirm the luteolytic efficacy of prostaglandin in inducing oestrus in zebu cattle and indicate that the nutritional status of the cows must be satisfactory before embarking on oestrus synchronization programmes.
P I Rekwot; E O Oyedipe; E Mukasa-Mugerwa; V O Sekoni; O P Akinpelumi; A A Anyam
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Veterinary journal (London, England : 1997)     Volume:  158     ISSN:  1090-0233     ISO Abbreviation:  Vet. J.     Publication Date:  1999 Jul 
Date Detail:
Created Date:  1999-09-02     Completed Date:  1999-09-02     Revised Date:  2009-11-03    
Medline Journal Info:
Nlm Unique ID:  9706281     Medline TA:  Vet J     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  53-8     Citation Subset:  IM    
Copyright Information:
Copyright 1999 Baillière Tindall.
Artificial Insemination Unit, National Animal Production Research Institute, P.M.B. 1096, Zaria, Nigeria.
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MeSH Terms
Animal Feed
Cattle / physiology*
Corpus Luteum / physiology
Dinoprost / administration & dosage,  standards,  therapeutic use*
Estrus / physiology
Fertility / physiology*
Insemination, Artificial / veterinary*
Nutritional Status / physiology
Progesterone / blood
Radioimmunoassay / veterinary
Reg. No./Substance:
551-11-1/Dinoprost; 57-83-0/Progesterone

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

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