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The Growth-Promoting Effect of Commercial Strained Meat and Fish Products Investigated with Infantile Rats

Departments of Pharmacology and Biochemistry and Nutrition, University of Southern California, Los Angeles

The growth-promoting effect of diets containing, as the only protein source, commercial strained meat or fish products has been investigated, using as controls diets containing dried skim milk powder. All of the investigated products promoted the growth of rats, even when fed at a low protein concentration of 6.7% of the total diet.

The average gain per gram of nitrogen consumed was in all experiments the highest for the group receiving in its diet skim milk powder. The second best growth was observed in the group receiving protein derived from strained tuna. The average growth for the groups on strained meat products was somewhat lower. Equalization of the mineral content up to the level in the milk diet did not eliminate the difference in growth promotion. Addition of B₁₂ (Reticulogen) improved the utilization of the beef diet.

These experiments show that in studies on the nutritive value of complex protein foods such as strained meat products, the non-caloric effect of the non-protein food constituents will have to be investigated further.