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Seasonal vitamin A content of milk and blood of Ala-Tau cows

Chupina, T.I.

Obmen Veshchestv Zhivot. Rast, Akad. Nauk kirgiz. SSR, 132-35

1966

Accession: 014658787
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Analysis of the milk of (i) 8 cross-bred Ala-Tau cows on the farm of the Kirgiz Agricultural Institute (mean fat content 3.48 %) and of (ii) 4 pure bred Ala-Tau cows on a breeding farm (mean fat content 3.82%) gave the following vitamin A values ( micro g/100 ml milk) for spring, summer, autumn and winter: (i) 4, 36, 17, 9; (ii) 14, 77, 30, 13. The values for blood serum ( micro g/100 ml) were similarly (i) 2, 27, 17, 8; (ii) 11, 59, 29, 12.

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Related References

Mcgillivray, W.A. 1957: Factors influencing the vitamin content of milk fat. 3. Seasonal changes in the vitamin A and carotenoid content of the blood plasma and milk fat of cows on pasture J. Dairy Res 24: 95-101
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