Document Detail

Production of prolific microsheep by embryo transfer into large non-prolific sheep.
MedLine Citation:
PMID:  17041066     Owner:  NLM     Status:  MEDLINE    
The Garole is a prolific breed of microsheep that possesses the FecB gene, which increases ovulation rate. The purpose of this study was to compare embryo production by multiple ovulation in seven Garole ewes with that in seven normal size, non-prolific Malpura ewes, and assess the influence of the large body size of Awassi crossbred recipient ewes on the birth-weight of Garole lambs. Oestrus was synchronised with two intramuscular injections of 7.5 mg prostaglandin F(2alpha) administered 10 days apart. The donor ewes were superovulated by the use of pregnant mare serum gonadotrophin and follicle-stimulating hormone. The onset and duration of oestrus were similar in both breeds. The Garole donors had higher total mean (se) ovarian responses (15.6 [3.6] v 9.1 [2.3]), ovulation rate (13.6 [3.1] v 8.4 [2.2]) and produced more transferable embryos (6.0 [3.5] v 4.0 [0.9]) than the Malpura donors, but the differences were not statistically significant. The Garole lambs produced by embryo transfer were on average 57.8 per cent heavier at birth than contemporary Garole lambs produced by natural mating.
S M K Naqvi; A Joshi; R Gulyani; D Kumar; A P Kolte; S Kumar; V P Maurya; S Saha; J P Mittal; V K Singh
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article    
Journal Detail:
Title:  The Veterinary record     Volume:  159     ISSN:  0042-4900     ISO Abbreviation:  Vet. Rec.     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2006-10-16     Completed Date:  2006-11-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0031164     Medline TA:  Vet Rec     Country:  England    
Other Details:
Languages:  eng     Pagination:  522-6     Citation Subset:  IM    
Division of Animal Physiology and Biochemistry, Avikanagar, via Jaipur, Rajasthan 304501, India.
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MeSH Terms
Birth Weight
Body Constitution
Embryo Transfer / veterinary*
Ovulation Induction / veterinary*
Pregnancy, Animal / physiology*
Reproduction / physiology*
Sheep / genetics,  physiology*

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

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