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Comparison of 2 enzyme immunoassays and a radioimmunoassay for measurement of progesterone concentrations in bovine plasma, skim milk, and whole milk
Download2008
Kastelic, John P., Small, Julie A., Ambrose, Divakar J., Colazo, Marcos G.
The objective of this study was to compare 2 enzyme immunoassays (EIAs) with a radioimmunoassay (RIA) as to sensitivity and accuracy in the measurement of the progesterone (P4) concentration in bovine plasma, skim milk, and whole milk. The 72 samples from 24 lactating dairy cows expected to have...
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Luteolysis, onset of estrus, and ovulation in Holstein heifers given prostaglandin F2alpha concurrent with, or 24 hours prior to, removal of an intravaginal, progesterone-releasing device
Download2004
Ambrose, Divakar J., Hittinger, M. A., Kastelic, John P.
The objective was to determine the effects of giving prostaglandin F2alpha (PGF) concurrent with, or 24 h before, removal of an intravaginal, progesterone-releasing (controlled internal drug release [CIDR]) device, on luteolysis, the synchrony of estrus and ovulation. Eighteen postpubertal...