Taylor M L, Stanisiewski E P, Riordan S G, Nemeth M A, George B, Hartnell G F
Monsanto Company, 800 N. Lindbergh Blvd., St. Louis, Missouri 63167, USA.
Poult Sci. 2004 Mar;83(3):456-61. doi: 10.1093/ps/83.3.456.
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.
一项为期42天的实验采用随机完全区组设计，比较了将转基因抗草甘膦（抗农达事件RT73）油菜籽粕与传统油菜籽粕喂给快速生长的罗斯×罗斯508肉鸡时的营养价值。8种油菜籽粕处理（抗草甘膦、非转基因对照和6个商业品种）中的每一种都使用了5栏雄性和5栏雌性肉鸡。肉鸡（每栏10只）在最初20天饲喂约25%（重量/重量）的油菜籽粕，此后饲喂20%（重量/重量）的油菜籽粕。总体而言，抗草甘膦油菜籽粕的性能反应变量与非转基因和商业油菜籽粕的性能反应变量没有差异（P>0.05）。各处理间胴体脂肪垫、胸肉、大腿、腿部和翅膀（按百分比计算）相似（P>0.05）。以活重的百分比表示，饲喂含抗草甘膦油菜籽粕日粮的肉鸡的冷却重量与饲喂所有其他日粮的肉鸡的冷却重量没有差异，但在非转基因对照日粮和商业日粮之间观察到了一些差异。各处理间胸肉或大腿肉的水分、蛋白质和脂肪百分比没有观察到主要差异（P>0.05）。将抗草甘膦油菜籽粕日粮与所有其他日粮（合并性别）进行比较，结果表明在性能、胴体产量或胸肉和大腿肉的水分、蛋白质和脂肪方面没有主要差异（P>0.05）。饲喂含抗草甘膦油菜籽粕日粮的肉鸡与饲喂非转基因对照和商业油菜籽粕日粮的肉鸡具有相似的生长性能。
