Document Detail

Fertility of N'dama and Bunaji cattle to artificial insemination following oestrus synchronization with PRID and PGF2alpha in the hot humid zone of Nigeria.
MedLine Citation:
PMID:  15449839     Owner:  NLM     Status:  MEDLINE    
A study was undertaken to determine the effectiveness of a progesterone-releasing intravaginal device (PRID) and prostaglandin F2 alpha (PGF2alpha) in synchronizing oestrus in N'dama and Bunaji cows and heifers and the fertility following artificial insemination at the synchronized oestrus. A total of 116 cows and heifers (58 N'dama and 58 Bunaji) were used in two separate trials. In the first trial, oestrus was synchronized using a PRID, which was inserted for 12 days; in the second trial, oestrus was synchronized by giving two injections of PGF2alpha 13 days apart. Only animals that did not respond to the first injection were given the second injection. At the end of each treatment period, the animals were observed for oestrus for 7 days and inseminated approximately 12 h following detection of oestrus. Standing to be mounted was the single criterion used to judge an animal to have been in oestrus. PGF2alpha and PRID were both effective in synchronizing oestrus in N'dama and Bunaji cows and heifers. The respective oestrus response rates, pregnancy rate and conception rates for PRID and PGF2alpha were 85.7%, 53.6% and 62.5% for PRID, and 91.7%, 68.3% and 74.6% for PGF2alpha. N'dama cattle showed significantly (p<0.05) better oestrus response rate, pregnancy rate and conception rate than Bunaji cattle following both PRID and PGF2alpha treatments. The pregnancy rate and conception rate following PGF2alpha treatment were better (p < 0.05) than for PRID, although the oestrus response rate did not differ. It is concluded that both PRID and PGF2alpha are effective in synchronizing oestrus in N'dama and Bunaji cattle in the hot humid zone of Nigeria and the fertility to artificial insemination at the synchronized oestrus was normal and acceptable. Thus, PRID and PGF2alpha can effectively be used in intensive breeding programmes for the rapid multiplication and distribution of both cattle breeds, especially the N'dama, which is a unique and beneficial animal genetic resource for the tsetse infested hot humid zone of Nigeria.
A A Voh; A Larbi; S A S Olorunju; K Agyemang; B D Abiola; T O Williams
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Tropical animal health and production     Volume:  36     ISSN:  0049-4747     ISO Abbreviation:  Trop Anim Health Prod     Publication Date:  2004 Jul 
Date Detail:
Created Date:  2004-09-28     Completed Date:  2004-11-09     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  1277355     Medline TA:  Trop Anim Health Prod     Country:  United States    
Other Details:
Languages:  eng     Pagination:  499-511     Citation Subset:  IM    
National Animal Production Research Institute, Ahmadu Bello University, Federal Ministry of Agriculture and Rural Development, PMB 1096, Shika, Zaria, Nigeria.
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MeSH Terms
Administration, Intravaginal
Breeding / methods
Cattle / physiology*
Dinoprost / pharmacology*
Estrus Synchronization / drug effects*
Fertility / drug effects*,  physiology
Insemination, Artificial / veterinary
Pregnancy, Animal / drug effects*
Progesterone / administration & dosage,  pharmacology*
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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