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Poultry Science, Vol 83, Issue 3, 456-461
Copyright © 2004 by Poultry Science Association

Articles

Comparison of broiler performance when fed diets containing roundup ready (event RT73), nontransgenic control, or commercial canola meal

ML Taylor, EP Stanisiewski, SG Riordan, MA Nemeth, B George, and GF Hartnell

Monsanto Company, 800 N. Lindbergh Blvd., St. Louis, Missouri 63167, USA. Mary.L.Taylor@monsanto.com

A 42-d experiment compared the nutritional value of genetically modified glyphosate-tolerant (Roundup Ready event RT73) canola meal to that of conventional canola meal when fed to rapidly growing Ross x Ross 508 broilers using a randomized complete block design. Five pens of males and 5 pens of females were used in each of 8 canola meal treatments (glyphosate-tolerant, nontransgenic control, and 6 commercial varieties). Broilers (10 birds/pen) were fed approximately 25% wt/wt canola meal during the first 20 d and 20% wt/wt canola meal thereafter. In general, performance response variables for glyphosate-tolerant canola meal were not different (P > 0.05) than those for the nontransgenic and commercial canola meals. Carcass fat pad, breast meat, thighs, legs, and wings (on a percentage basis) were similar across treatments (P > 0.05). Expressed as percentage of live weight, chill weight of the broilers fed diets containing glyphosate-tolerant canola meal was not different from those fed all other diets, but some differences were observed between the nontransgenic control and commercial diets. No major differences were observed in percentage of moisture, protein, and fat in breast or thigh meat (P > 0.05) across treatments. Comparisons of the glyphosate-tolerant canola diet to the population of all other diets (combining sexes) showed no major differences (P > 0.05) in performance, carcass yields, or moisture, protein, and fat in breast and thigh meat. Broilers fed diets containing glyphosate-tolerant canola meal had similar growth performance to birds fed nontransgenic control and commercial canola diets.


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