![]() |
|
|
Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI 48824
Paired dam-fetus liver and serum samples were collected from 101 pregnant dairy cattle at slaughter to determine mean fetal and maternal liver and serum vitamin E concentrations, relationships between maternal and fetal vitamin E status and interrelationships between selenium and vitamin E status. Fetal age was estimated from fetal crown-to-rump length. Fetal
-tocopherol concentration ranged from 0 to 31.4 µg/g dry wt with a mean of 7.1 µg/g dry wt and from 0 to 0.92 µg/ml with a mean of 0.29 µg/ml for liver and serum, respectively. Mean maternal liver (12.5 µg/g dry wt) and serum (2.16 µg/ml)
-tocopherol concentrations and vitamin E to cholesterol ratio (1.45) were 1.8, 7.4 and 3.5 times greater (P < 0.0001) than fetal means, indicating limited placental transfer of vitamin E to the fetus. Gestational age had no effect on maternal vitamin E concentration, however, fetal tissue
-tocopherol concentration declined (P < 0.05) with fetal age. Maternal serum
-tocopherol concentration and fetal age were found to best predict fetal
-tocopherol concentration in serum. Interrelationships between selenium and vitamin E status were minimal. These data suggest inefficient placental transfer of vitamin E, resulting in minimal protection of the neonate from vitamin E-deficiency disease as a result of prepartal maternal supplementation.
KEY WORDS: vitamin E selenium placental transfer dairy cattle
1 Research presented to Michigan State University in partial fulfillment of M.S. degree.
2 Current address and reprint requests: Department of Animal Science, 223 Morrison Hall, Cornell University, Ithaca, NY 14850
Manuscript received 11 October 1988. Revision accepted 7 April 1989.
This article has been cited by other articles:
![]() |
K. P. Waller, C. H. Sandgren, U. Emanuelson, and S. K. Jensen Supplementation of RRR-{alpha}-Tocopheryl Acetate to Periparturient Dairy Cows in Commercial Herds with High Mastitis Incidence J Dairy Sci, August 1, 2007; 90(8): 3640 - 3646. [Abstract] [Full Text] [PDF] |
||||