J. Anim Sci.
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J. Anim Sci. 1972. 35:1020-1024.
© 1972 American Society of Animal Science
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Abomasal and Blood Plasma Nitrogen Constituents of Wethers Fed Corn Gluten and Fish Meal Supplemented Semipurified Diets

H. E. Amos1, G. E. Mitchell, Jr., C. O. Little and D. G. Ely

University of Kentucky, Lexington 50406

Abstract

FOUR mature 45-kg wethers with abomasal cannulas were fed semipurified diets containing corn gluten meal, fish meal or combinations of these proteins in a 4 x 4 latin square experiment designed to study the effects of protein source on the quantity of nitrogen reaching the abomasum and the relationships among amino acid patterns in the diets, the abomasal contents and plasma. Approximately 55 to 60% of the nitrogen entering the abomasum was associated with the particulate digesta and 40 to 45% with the liquid abomasal digesta. Abomasal lysine and threonine percentages were significantly (P<.05) higher in lambs fed the all fish meal supplemented diet vs. the CGM diet. However, even in the CGM diet, lysine increased almost three-fold from the diet to the abomasum. At the same time leucine decreased approximately one-half. The fish meal protein, which was relatively low in arginine, produced significantly (P<.05) lower molar percentages of abomasal and plasma arginine.

Footnotes

1 Present address: Animal Physiologist, Richard B. Russell Agricultural Research Center, U.S.D.A., A.R.S., P.O. Box 5677, Athens, Ga. 30601

The investigation reported in this paper (71-5-139) is in connection with a project of the Kentucky Agricultural Experiment Station and is published with the approval of the director.






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Copyright © 1972 by the American Society of Animal Science.