J. Anim Sci.
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J. Anim Sci. 1980. 51:892-895.
© 1980 American Society of Animal Science
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Effect of the Brown Midrib-Three Gene on Corn Grain Utilization by Growing Rats1,2,3,

E. A. Keith4, V. F. Colenbrander5, L. F. Bauman6 and V. L. Lechtenberg6

Purdue University, West Lafayette, IN 47907

Abstract

A study was conducted to determine the effect of the brown midrib-three (bm3) gene for low lignin in corn plants on grain utilization by growing rats. No differences in total body weight gain were observed between rats fed bm3, normal and iso-N bm3 (isonitrogenous to normal) grain diets with or without supplemental dietary protein. Body weight gains for rats fed bm3, normal and iso-N bm3 grain diets were 39.6, 35.2 and 31.6 g, respectively, when no supplemental protein was fed, and 134.6, 142.1 and 132.2 g when supplemental protein as soy protein was fed to increase crude protein to 11 to 12%. No differences in feed conversion were observed between rats fed bm3, normal and iso-N bm3 grain diets at either level of dietary protein. Feed to gain ratios were 8.7, 9.4 and 10.7 when no supplemental protein was fed and 3.2, 3.2 and 3.4 when supplemental protein was fed. According to this study, the bm3 gene has no effect on grain utilization by the growing rat.

Footnotes

1 Journal paper no. 7825, Purdue Univ. Agr. Exp. Sta

2 Supported in part by a grant from Eli Lilly Foundation.

3 Appreciation is extended to W. R. Featherston and J. C. Rogler for their assistance and advice on this study.

4 Present address: Dairy Sci. Dept., Louisiana State Univ., Baton Rouge 70803.

5 Anim. Sci. Dept.

6 Agron. Dept.






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