J. Anim Sci.
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J. Anim Sci. 1949. 8:224-233.
© 1949 American Society of Animal Science
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The Effect of Crude Soybean Lecithin on the Absorption and Utilization of Vitamin A Fed Prepartum to the Ewe and Sow1

H. D. Eaton, J. A. Christian, F. C. Daugherty2, A. A. Spielman and L. D. Matterson

University of Connecticut3

Abstract

The effect of feeding daily 200,000 I.U. of vitamin A with or without the addition of 4 grams of crude soybean lecithin to ewes for an average of 14 days prior to parturition and to sows for an average of 33 days prior to parturition has been studied. The following results were obtained:

  1. Both sows and ewes fed supplementary vitamin A with or without the addition of soybean lecithin had higher blood plasma levels of vitamin A at the time of parturition and 30 days after parturition than ewes and sows receiving no supplementary vitamin A. The only statistically significant difference was for the ewes at the time of lambing and for the sows 30 days after farrowing. The addition of soybean lecithin to a vitamin A supplement did not materially increase the blood plasma levels of vitamin A above that of animals receiving vitamin A alone.
  2. Both newborn and 30-day old lambs and pigs from dams fed suppleplementary vitamin A with or without the addition of soybean lecithin were higher in blood plasma vitamin A levels than those animals from dams fed only the basal ration. There was a statistical difference at 30 days of age for both lambs and pigs.
  3. The concentration of vitamin A per gram of liver or the total amount of vitamin A in the liver was significantly higher at birth and at 30 days of age in those lambs and pigs from dams fed supplementary vitamin A. The addition of soybean lecithin did not materially increase the liver storage of vitamin A.

Footnotes

1 This work was supported in part by the Big-Y-Foundation and Chas. M. Cox Co. The authors are grateful to Mr. J. Pritchard and Mr. B. Cummings, herdsmen of the University sheep flock and swine herd for the care of1the experimental animals. Further acknowledgement is made of the assistance of Mrs. L. Griswold, Dept. of Poultry Husbandry, in the carotenoid analyses of the feeds fed and in the analyses of the vitamin A potency of the dog fish liver oil.

2 Now at Colorado A. & M. College, Fort Collins.

3 Animal Industries Department, Storrs, Conn.






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Copyright © 1949 by the American Society of Animal Science.