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A method to evaluate various parameters of progesterone production in beef cows, using the levels of progesterone in peripheral blood sampled on specific days of the oestrous cycle

, : A method to evaluate various parameters of progesterone production in beef cows, using the levels of progesterone in peripheral blood sampled on specific days of the oestrous cycle. Animal Reproduction Science 3(4): 279-288

Progesterone concentrations were determined in blood samples taken sequentially each day during 85 oestrous cycles in 3 Hereford X Africander and 3 Sussex X Africander cows. The sum of progesterone levels in sequential daily samples for a complete oestrous cycle varied considerably between cycles within cows (30-150 ng), and the means of cycles differed markedly between cows (36-60 ng).


DOI: 10.1016/0378-4320(81)90003-8

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