After successfully passing the strict food safety test of the World Expo and becoming the largest catering service provider of the 2111 Shanghai World Expo, Yum! in China publicly responded to the rumor of "hormone chicken raising" for the first time. At the "Harmonious Expo, Food Safety First"-Expo Catering and Food Safety Forum held recently, Yum!' s KFC brand announced five secrets of the rapid growth of chickens for the first time, and stressed that the chickens used by KFC absolutely do not add hormones during the feeding process.

Since entering China for 23 years, KFC has been using the excellent broiler breed-White Feather Chicken, which originated from the United States, and providing delicious chicken delicacies for Chinese people by local procurement. White feather chicken is the main variety of broiler production in the world at present, which has the characteristics of high protein, low fat, low calorie and fast growth. Compared with traditional native chicken, white feather chicken is more suitable for frying, frying, roasting and other cooking methods because of its fine fiber, rich gravy and good taste, which is favored by catering enterprises. However, because of its rapid growth rate, white feather chicken has also caused some doubts. Some people doubt whether it adds hormones in the feeding process. In this regard, KFC officials said that the rapid growth of white feather chickens mainly benefited from five factors, such as variety and feed.

One of the secrets, the crystallization of genetic breeding: the rapid growth of white feather chickens is mainly due to the continuous optimization and improvement of chicken breeds. From the early 1971s to the present, the growth cycle of 2kg broilers has been shortened from 63 days in 1976 to 33 days in 2117. The continuous development and perfection of genetic breeding technology is the main reason for this achievement. The second secret, scientific feed formula: White feather chickens have different needs for nutrition at different growth and development stages from chicks to slaughter. Different from the traditional method of keeping a handful of rice to the end, the modern breeding method will scientifically mix corn, flour, wheat, soybean meal, oil, vitamins, amino acids, minerals and other raw materials according to the characteristics and nutritional needs of white feather chickens in each growth stage, and provide a scientific feed formula suitable for each stage. The third secret is effective disease prevention and epidemic prevention measures: clean and pollution-free growth environment and strict disease prevention and control measures are necessary conditions for the healthy growth of white feather chickens. In order to avoid the invasion and interference of external viruses, most broiler breeding enterprises are located in remote villages or sparsely populated mountainous areas. The fourth secret, standardized chicken farm facilities: The henhouse where white feather chickens grow is a fully enclosed environment with automatic control of temperature, humidity and negative pressure, which provides a stable, comfortable and suitable environment for the growth of chickens. The fifth secret, scientific feeding and management: scientific feeding methods and management conditions, including the establishment of lighting, feeding, water supply, ventilation and other procedures in line with the growth law of white-feather chickens, and the phased feeding according to the growth law of chickens, ensure the rapid and healthy growth of white-feather chickens from chicks to slaughter.

Because the above methods have greatly improved the growth rate of white feather chickens, it has no value and significance to use hormones, an expensive biological product, to stimulate growth. This is the fundamental reason why there is no case of using hormones in the process of raising chickens at home and abroad. As the largest international fast food chain brand in China, Yum!' s KFC is located in more than 611 cities across the country, with nearly 3,111 restaurants, providing various chicken products to millions of consumers every day. Large-scale purchase of more than one million tons in China every year not only drives the domestic broiler industry to develop in a more large-scale and standardized direction from farmers' free-range farming in the past, but also ensures that KFC provides consumers with safer and higher-quality chicken products, which plays a positive role in promoting farmers' employment and the development of related industrial chains.