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Diet: Semi Pure Maintenance Diet AIN93M
This rodent maintenance diet is based on a formulation developed by the American Society of Nutritional Sciences: ASNS (formerly American Institute of Nutrition). The Diet AIN-93M was a modification of a prior formulation AIN-76A. This well studied diet was updated to separate maintenance from growing animals and improve the long term health of rodents fed semi-pure diets.
- The formulation for AIN-93G and AIN-93M was first presented in
Journal of Nutrition., 123[11]:1939-51, November
1993
An Interview with Dr. Philip G. Reeves for in-cites - We have made some modifications of the formulation to suit locally available raw materials. Our experience in short and long term feeding trials confirms that these modifications have little or no impact on animal performance.
- Cystine in the original formulation has been replaced by methionine. Although casein has a low cystine content, there is good evidence of interconversion of methionine and cystine.
- Soybean oil has been replaced by Canola oil. While this changes the fatty acid profile of the diet all known requirements have been met. The biggest difference between soybean and canola oils is in the linoleic and linolenic acid content. Although canola oil has a lower linoleic acid content (a known essential fatty acid) it could be argued that the n6 / n3 fatty acid ratio of canola oil is superior to soybean oil. The erucic acid content of canola oils available in Western Australia is extremely low.
- Some minor modifications have been made in the
salt form of the trace minerals.
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All information copyright 2002. Specialty Feeds Pty Ltd.