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ARS | Publication request: Effects of Low Phytic Acid Barley on Zinc Utilization in Young Broiler Chicks

ARS | Publication request: Effects of Low Phytic Acid Barley on Zinc Utilization in Young Broiler Chicks

Research Project: SEED CHEMISTRY GENETICS

Location: Aberdeen, Idaho

Title: Effects of Low Phytic Acid Barley on Zinc Utilization in Young Broiler Chicks

Authors
Linares, L. - UNIV OF MO, ANIMAL SCI
Broomhead, J. - UNIV OF MO, ANIMAL SCI
Guaiume, E. - UNIV OF MO, ANIMAL SCI
Ledoux, D. - UNIV OF MO, ANIMAL SCI
Veum, T. - UNIV OF MO, ANIMAL SCI
Raboy, Victor

Submitted to: Poultry Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: October 8, 2006
Publication Date: February 1, 2007
Citation: Linares, L.B., Broomhead, J.N., Guaiume, E.A., Ledoux, D.R., Veum, T.L., Raboy, V. 2007. Effects of Low Phytic Acid Barley on Zinc Utilization in Young Broiler Chicks. Poultry Science. v 86

Interpretive Summary: Most of the phosphorus in grains and legumes is found as a compound called phytic acid. Non-ruminant animals such as poultry, swine and fish, as well as humans, do not digest phytic acid well. In addition, dietary phytic acid binds tightly to zinc and other mineral nutrients. As a result, when non-ruminants consume grain and legume-based diets, they excrete most of the phosphorus consumed, and in addition, the dietary phytic acid has a pronounced negative impact on zinc nutrition. In this study chicks were fed diets prepared with either a normal barley, or a low phytic acid barley that contains only 5% of the phytic acid found in normal barley. In addition, each type of barley was supplemented with either no additional zinc, 10 mg zinc per kg diet, or 20 mg zinc per kg diet. The nutritional health of the chicks, with respect to zinc, was uniformly high when they consumed the low phytic acid diet as compared with the normal barley diet. While supplementation with zinc improved the zinc nutrition of the animals consuming normal barley, the animals consuming the low phytic acid barley still had better zinc nutrition. In addition, the chicks consuming the low phytic acid barley retained and utilized more of the dietary phosphorus than did chicks consuming the normal barley. This study clearly demonstrates that the use of low phytic acid grains and legumes both improves the utilization of phosphorus and important mineral nutrients like zinc.

On the subject of grains' phytic acid harming health, documentation is easy to find...- Along with people selling phytic acid as a health food supplement! According to the vegetarians, it's from grain, so it must be super healthy!
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