R.E. Erb

TL;DR: The precision of the Orange G dye binding method has been increased by a new method for measuring the concentration of dye not bound by the milk proteins as discussed by the authors, which has a correlation coefficient of.98, with a standard deviation from regression of 0.078% protein.

TL;DR: Evaluated luteal function during pregnancy in cows 11 to 284 days after estrus, breeding, or pregnancy and partial correlations between content and concentration of progesterone, 20 β -ol, and total progestin in the CL were 0.87.

TL;DR: Progesterone and Δ 4 -pregnene-20 β -ol-3-one (20 β-ol) were chemically assayed in 42 corpora lutea, ovaries, ovarian venous blood plasma, and jugular venous lymphocyte blood plasma samples collected from 31 non-pregnant dairy cows and heifers.

TL;DR: Progesterone and 20 β-ol per gram of luteal tissue were not highly correlated at any stage of pregnancy and the correlation for the study was only 0.21.