Abstract: Pancreatic polypeptie is a kind of hormone. It secreted from pancreatic polypeptie cell of animal’s pancreas, and it’s molecular weight is 4.2 kD, and it is made of 36 amino acids.To study avian pancreatic polypeptie’s function , crude avian pancreatic polypeptie was acquired by the way of calcium phosphate adsorption. Then it was purified with sephadexG50 and tested by SDSPAGE. Afterward, the test on animal is done. 182 broilers were randomly grouped into 7 groups and each group is 26. Ⅰ，Ⅱ，Ⅲ，Ⅳ test group were feed with crude APP by 25,50,75,100 ml/group a day. Ⅴ，Ⅵ test group were injected hypodermically crude APP by 14,28 μg/ml a week. Ⅶ test group was control group. Four broilers of each group were killed at 14,28 and 42 days respectively and the swatch were acquired. Then examine the concentrations of TP, RBC, LDH, CK, GOT, GPT, ATP, T3, and T4 in blood plasma or in liver. Analyzing the data by SPSS software showed that crude APP can accelerate broiler’s growth; ameliorate the feed/gain ratio; advance broiler's metabolization and immunity; enhance the feedback while meet an emergency.

Key words: APP; broiler; metabolization