Glyphosate-Tolerant Corn: The Composition and Feeding Value of Grain from Glyphosate-Tolerant Corn Is Equivalent to That of Conventional Corn (Zea mays L.)
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- 作者：Ravinder S. Sidhu ; Bruce G. Hammond ; Roy L. Fuchs ; Jean-Noel Mutz ; Larry R. Holden ; Beverly George ; and Tammy Olson
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2000
- 出版时间：June 2000
- 年：2000
- 卷：48
- 期：6
- 页码：2305 - 2312
- 全文大小：60K
- 年卷期：v.48,no.6(June 2000)
- ISSN：1520-5118
文摘
Glyphosate-tolerant (Roundup Ready) corn line GA21 has been developed by genetic modificationto tolerate glyphosate, the active ingredient in Roundup herbicide. The purpose of this study wasto evaluate the compositional and nutritional safety of corn line GA21 compared to that ofconventional corn. Compositional analyses were conducted to measure proximate, fiber, amino acid,fatty acid, and mineral contents of grain and proximate, fiber, and mineral contents of forage collectedfrom 16 field sites over two growing seasons. The nutritional safety of corn line GA21 was evaluatedin a poultry feeding study conducted with 2-day old, rapidly growing broiler chickens, at a dietaryconcentration of 50-60% w/w. Compositional analysis results showed that, except for a few minordifferences that are unlikely to be of biological significance, the grain and forage of GA21 corn werecomparable in their composition to that of the control corn line and to conventional corn. Resultsfrom the poultry feeding study showed that there were no differences in growth, feed efficiency,adjusted feed efficiency, and fat pad weights between chickens fed with GA21 grain or with parentalcontrol grain. These data taken together demonstrate that Roundup Ready corn is as safe andnutritious as conventional corn for food and feed use.Keywords: Corn (Zea mays L.); genetically modified; glyphosate tolerant; Roundup