Abstract: In order to decrease the cost of the laboratory guineapigs' nutritiona
l palletized feeds and to raising the guineapigs' Economy benefit；Solution source of Crude Fiber. seventytwo guineapigs were weighed from 150 to 180 grams and were separated into three groups randomly. Whole feeding experiment lasted for 60 days，Study on Effects of it on Growth and Development of guineapigs. The experimental results indicate that: unite bran could instead of the alfalfa meal powder partly or completely, No effect was found on the GrowthDevelopmen and organ coefficient and biochemical parameters on guineapigs.

Key words: unite bran; guineapigs; growth performance; biochemical parameters