Document Detail

Fertirelin and buserelin compared by LH release, milk progesterone and subsequent reproductive performance in dairy cows treated for follicular cysts.
MedLine Citation:
PMID:  16727779     Owner:  NLM     Status:  PubMed-not-MEDLINE    
This field study compared the efficacy of a single injection of 200 microg fertirelin with that of 20 microg buserelin in shortening the recovery period of 68 laotating Holstein-Friesian cows with ovarian follicular cysts 65 d post partum or later. Differential diagnosis was based not only on palpation per rectum but also on skim milk progesterone profiles (<or= 1.0 ng/ml) spanning a 15-d period rather than the conventional 7-d period, and diagnostic accuracy was markedly enhanced by the 15-d progesterone profiles. At 2 to 2.5 h post treatment all the cows showed an LH increase four-fold or greater. Luteinization, indicated by progesterone levels (>or= 1.0 ng/ml) 1 wk after treatment, was evidenced in 75% of the fertirelin group and 72% of the buserelin group. A 74% conception rate was achieved in fertirelin-treated cows, with a mean interval of 71 d from treatment to conception. In the buserelin-treated cows, 65% conceived and the treatment-to-conception interval was 63 d. Differences were insignificant. At the doses used the two GnRH analogs were deemed equally effective in managing particularly stubborn follicular cysts.
T Osawa; T Nakao; M Kimura; K Kaneko; H Takagi; M Moriyoshi; K Kawata
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Theriogenology     Volume:  44     ISSN:  0093-691X     ISO Abbreviation:  Theriogenology     Publication Date:  1995 Oct 
Date Detail:
Created Date:  2006-05-26     Completed Date:  2007-07-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0421510     Medline TA:  Theriogenology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  835-47     Citation Subset:  -    
Department of Veterinary Obstetrics and Gynecology, Rakuno Gakuen University, Ebetsu, Hokkaido, Japan.
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