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Relationship between milk progesterone concentration and milk yield, fat and total nitrogen content

Relationship between milk progesterone concentration and milk yield, fat and total nitrogen content

British Veterinary Journal 132(5): 477-486

Milk samples were collected during routine milk recording from a herd of 68 dairy cows, at the evening and following morning milkings. Milk yields, fat and total N contents were measured. Progesterone concentrations were higher in samples obtained from the evening milking than in those of the morning one. The evening and morning progesterone concentrations were highly correlated. Among the 3 other criteria, total N content was found to account for the largest part of the variance in morning milking progesterone concentration. It should be the first to be estimated when determining accurate progesterone concentration values.

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Accession: 006297671

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PMID: 963519

DOI: 10.1016/s0007-1935(17)34585-2

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