Journal article

Publication year: 1992

Pages: 913-916

Journal: Comparative biochemistry and physiology. Part B: Comparative biochemistry

Volume number: 103

Issue number: 4

ISSN: 0305-0491

DOI Link: https://doi.org/10.1016/0305-0491(92)90214-C

Publisher: Pergamon Press

Abstract: 

1. The ratios of stable carbon isotopes C-13/C-12 in milk constituents of Holstein dairy cattle were investigated by mass spectrometry.
2. Under physiological feeding conditions the natural abundance of C-13 in lactose was greater than in milk fat.
3. Reduction of energy intake diminished the abundance of C-13 in lactose resulting in values similar to those of fat.
4. It is suggested that by comparing the C-13/C-12 ratios in milk fat and lactose the metabolic energy state of cows may be rated.

Harvard Citation style: Schulze, E., Diop, H., Breves, G. and Giese, W. (1992) Effect of energy metabolism on 13C/12C-ratios in milk fat and lactose of cows, Comparative biochemistry and physiology. Part B: Comparative biochemistry, 103(4), pp. 913-916. https://doi.org/10.1016/0305-0491(92)90214-C

APA Citation style: Schulze, E., Diop, H., Breves, G., & Giese, W. (1992). Effect of energy metabolism on 13C/12C-ratios in milk fat and lactose of cows. Comparative biochemistry and physiology. Part B: Comparative biochemistry. 103(4), 913-916. https://doi.org/10.1016/0305-0491(92)90214-C