Back to Search Start Over

Effect of prostaglandin F2 alpha administered before estrus synchronization with norgestomet and estradiol valerate on calving rates of beef cows.

Authors :
Kesler DJ
Faulkner DB
Machado R
Ireland FA
Tjardes KE
Source :
Journal of animal science [J Anim Sci] 1996 Sep; Vol. 74 (9), pp. 2076-80.
Publication Year :
1996

Abstract

Three experiments were conducted to evaluate the effects of prostaglandin F2 alpha treatments 5, 9, and 14 d before Syncro-Mate B on calving rates of 1,072 beef cows from inseminations at a pre-set time. The administration of prostaglandin F2 alpha 5 d before Syncro-Mate B decreased (P < .01) calving rates. This reduction was associated with lower (P < .05) calving rates in cows administered Syncro-Mate B in the first half of the estrous cycle. Calving rates were unaffected n cows administered prostaglandin F2 alpha 9 d before Syncro-Mate B. The administration of prostaglandin F2 alpha 14 d before Syncro-Mate B reduced (P < .05) calving rates in previously anestrous cows. In summary, prostaglandin F2 alpha should not be administered to postpartum cows 5 to 14 d before Syncro-Mate B synchronization.

Details

Language :
English
ISSN :
0021-8812
Volume :
74
Issue :
9
Database :
MEDLINE
Journal :
Journal of animal science
Publication Type :
Academic Journal
Accession number :
8880408
Full Text :
https://doi.org/10.2527/1996.7492076x