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Radioimmunoassay of milk progesterone during oestrus in dairy cows



Radioimmunoassay of milk progesterone during oestrus in dairy cows



Chinese Journal of Animal Science Zhongguo Xumu Zazhi (4): 8-9



During oestrus, the milk progesterone concentrations in 48 cows were <2 to >7 ng/ml. Five cows had pseudo-oestrus, and had a continuously high progesterone concentration. In cows with normal oestrous cycles, oestrus appeared 1-2 days after the progesterone concentration declined to basal values. The progesterone concentrations were at basal values for about 3 days before and after oestrus, and then increased gradually.

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Accession: 001667822

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