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A methodological study on measurement of the mammary arteriovenous differences in dairy cows


, : A methodological study on measurement of the mammary arteriovenous differences in dairy cows. Reproduction Nutrition Developpement 21(1): 31-46

Two diets with 30 or 70% concentrate were offered 2 or 8 times daily in limited amounts. Circadian patterns of mammary differences (AV) differences in the main blood metabolites and in milk production were studied in two cows with an exteriorized carotid. Diet digestibility and ruminal fermentation profiles were studied in two other cows fitted with a rumen cannula. Circadian patterns of arterial levels and AV differences in acetate and beta -hydroxybutyrate depended on feeding frequency.

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