Is a concept and program in diet formulation, exclusive to PMI® LabDiet®, of delivering a constant level of nutrients while taking into account the biological variation of natural feedstuffs. Ingredients are assayed daily and necessary formulation refinements are made to assure a constant level of nutrient delivery. The actual set of ingredients used in a diet does not change.
The benefit to the science community is a constant baseline of nutrition to help control unwanted, nutritionally induced variables. In addition, the constant set of ingredients are assayed for interfering environmental contaminants to further reduce the possibility of unwanted variables introduced through the diet. An unwanted variable may lead to confounding experimental results.
CONSTANT NUTRITION® removes uncertainty and assures control, predictability and maintenance of baseline data in research experimentation.
Fixed Formulation – Extensive ingredient research has proven, beyond a doubt, that a formula produced under ‘Fixed Formulation’, without credence to ingredient variability, will result in unknown and sometimes radical changes in nutrient levels. PMI® does produce non-laboratory products under Fixed Formulation. These are primarily economy minded formulated feeds that can be safely fed for production purposes to the beef, swine and dairy industries. The finished product testing on these products from season to season proves ingredient variability can change the nutritional composition of an animal feed.
The practice of ingredient interchange, known as “least-cost formulation,” is widely practiced within the commercial feed industry. When the cost of one ingredient increases, a lower cost ingredient may be used as a substitute in order to produce a lower cost feed, providing the customer with the most economical feed for animal production. It is widely know, however, that laboratory feeds are fed to animals raised for breeding and research, not for animals used to produce food such as meat, milk and eggs.
Click here to read an article in JAALAS on formulations.