Effects of feeding calves genetically modified corn Bt11: a clinico-biochemical study
2006
Shimada, N.(National Inst. of Animal Health, Tsukuba, Ibaraki (Japan)) | Murata, H. | Mikami, O. | Yoshioka, M. | Guruge, K.S. | Yamanaka, N. | Nakajima, Y. | Miyazaki, S.
Genetically modified corn Bt11 is insect-resistant and expresses Cry1Ab toxin, an insecticidal protein, in kernels. Although Bt11 corn is considered safe based on animal performance, there are no reports available on the clinico-biochemical effects of feeding it to cattle. In this study, we evaluated the effects of feeding Bt11 to calves, using blood and ruminal clinico-biochemical parameters. Our three-month-long feeding experiment demonstrated that calves (n=6), fed with a ration containing 43.3% of Bt11 corn kernels as dry matter, did not develop any discernible clinical, hematological, biochemical, or ruminal abnormalities as compared with control calves (n=6) fed non-Bt11 corn. The results suggest that the transgenic Bt11 has no negative clinico-biochemical effects on calves.
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