What are the main signs that a native chicken breed is not ideal?

The native chicken breeds currently raised are mainly native chickens from Guangxi Yellow, Guangdong Ma, Fujian, Zhejiang, Anhui and other places. Because the chicks must be transported over long distances, chick quality is difficult to guarantee, and the survival rate is between 70% and 85%. In addition, native chickens from other regions have meat-type chicken bloodlines. Although they grow faster, their flavor is inferior to that of authentic local native chickens, so their market price is lower. For local native chickens, because the breeding eggs come from rural areas, maternal antibody titers vary unevenly, and laying hens often carry vertically transmitted pathogens. The uniformity and disease resistance of the chicks are relatively poor, and the survival rate is between 60% and 78%. They also grow more slowly. Although the market price is higher, the economic benefit is still not ideal enough.