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AIN-76 diet: should we change the formulation?

¹U.S. Department of Agriculture, ARS, Grand Forks Human Nutrition Research Center, ND 58202.

The Journal of Nutrition

|August 1, 1989

Summary

Recommendations for the AIN-76 rodent diet include standardizing fatty acid content and cellulose source. Adjustments to vitamin E, calcium phosphate, and manganese levels were also proposed to improve diet formulation.

Area of Science:

Nutrition Science
Rodent Diet Formulation

Background:

The AIN-76 rodent diet is a widely used standard for research.
Potential issues with the current formulation necessitate a review.

Purpose of the Study:

To discuss potential modifications to the AIN-76 rodent diet formulation.
To gather expert recommendations for improving the diet's composition and suitability for long-term studies.

Main Methods:

A workshop was convened with expert committees to review the AIN-76 diet.
Recommendations were based on expert discussions and preliminary findings.

Main Results:

Key recommendations include increasing fat content to at least 10% with standardized fatty acids.
Standardization of cellulose source (amorphous preferred) and adjustment of vitamin E levels were suggested.

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Modifications to decrease nephrocalcinosis incidence were proposed, including reducing calcium phosphate dibasic and manganese levels.

Conclusions:

The workshop provided preliminary recommendations for AIN-76 rodent diet improvements.
These suggestions aim to enhance diet standardization and address specific health concerns in rodents.