Effect of Tryptophan Deficiency on the Pig
- 31 October 1949
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Animal Science
- Vol. 8 (4), 532-540
- https://doi.org/10.2527/jas1949.84532x
Abstract
Tryptophan has been proven indispensable for growing Duroc weanling pigs by the use of a purified diet which was deficient in this amino acid. Lack of tryptophan decreases the feed efficiency and feed consumption, and causes a loss in weight in young pigs. Although the minimum level of tryptophan needed for optimum growth and feed efficiency is not known, a level of 0.4% of DL-tryptophan seems to be adequate to meet the normal requirement in pigs weighing 50 to 100 lbs. A purified diet has been formulated which supports a rate of growth equal to that obtained on a good natural grain ration. Copyright © . .This publication has 9 references indexed in Scilit:
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