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Evaluation of the safety and efficacy of Lesquerella fendleri seed and oils as poultry feed additives

Ross E. C. Beier, Leon F. Kubena, Jackson L. McReynolds, Allen J. II Byrd, Michael E. Hume, Roque L. Evangelista, Terry A. Isbell, David A. Dierig
Clear Blue Knowledge 2015 v. no. pp. 1-10
hulling, Physaria fendleri, chicks, economic valuation, lesquerella seed, cecum, acids, Ricinus communis, Lesquerella, ingredients, bacterial infections, cellulosic materials, castor oil, feed additives, feed conversion, animal pathogenic bacteria, oilseed crops, amino acid composition, toxicity, poultry, weight gain, Salmonella, Southwestern United States
Lesquerella (Lesquerella fendleri (Gray) Wats) is an oil seed plant capable of growth over a large geographic area of the southwestern U.S. The seed oil contains hydroxyfatty acids, useful in a variety of industrial products, and can replace imported castor bean oil (Ricinus communis L.). Lesquerella is also rich in high-quality protein with a well-balanced amino acid composition. We investigated the potential of using lesquerella as an ingredient in poultry feed. An increase from 5% to 20% whole lesquerella seed supplemented diet resulted in a negative linear effect on poultry weight gain at P < 0.001, and had no effect on recoverable Salmonella from the ceca of Salmonella challenged chicks. Lesquerella oil supplementation of feed reduced weight gain of the chicks, P < 0.0058, and also did not reduce Salmonella in challenged birds. However, there was no difference in weight gain between control birds and those receiving 2.5% or 5% dehulled lesquerella seed. A small increase in feed conversion was observed, 2.35 ± 0.05 for controls, 2.47± 0.10 for the 2.5% dehulled lesquerella seed group, and 2.53 ± 0.15 for birds receiving 5% dehulled lesquerella seed. There appears to be no toxicity associated with dehulled lesquerella seed. We hypothesize that utilization of Lesquerella fendleri dehulled seed, after further processing to remove the excess cellulosic materials and valuable oils, will be an additional protein product useful as a poultry feed component, and could therefore add to the economic value of the plant.