Combining the computation of genotype frequency,gene frequency and statistical analysis with fat contain,this study found the frequency of allele A was higher in broilers than in layers and obtained a tendentious conclusion that the gene frequency of allele A was positively correlated with fat character.

The frequencies of different genotypes in cross combinations of local chickens were calculated and the relationship between three genotypes and fattiness traits of these chickens were analyzed based on liner model.

The negative effect of excessive deposit lipid to poultry industry had became more concerned due to continue growth selection during the long period, molecule breeding to those special chicken fat traits turn to be a optimistic field.

PCR-SSCP method was used to study the OBR and PPAR genes that might be correlated with fat traits in SiChuan White Goose, XuPu Goose and Tong-Ting Grass Goose.