After setting things right in 1979, Academician Zhang Ziyi successively presided over the key research projects of the state and the Ministry of Agriculture, such as "Evaluation of feed nutritional value" and "Study on the nutritional metabolism law of livestock and poultry", and organized the state to cooperate to complete the formulation of "In vitro determination method of digestible energy of pig feed" and "Standard determination scheme of metabolic energy of chicken feed". On this basis, China feed composition and nutritional value table, a set of modern animal nutritional indicators, provides a scientific basis for the formulation and release of China lean pig feeding standard, chicken feeding standard and cattle feeding standard and the development of feed formula optimization software. This work won the second prize of the national seventh five-year plan for scientific and technological progress. Entrusted by the national technical supervision department, experts were organized to complete the drafting, publication, publicity and implementation of a series of national, professional, industrial and local standards related to the feed industry, such as China Feed Industry System Table.

In the past 10 years, Zhang Ziyi directly presided over and participated in the formulation of nearly 70 feed industry standards, which provided legislative and judicial basis for ensuring the product quality of China feed industry and improving the supervision and inspection system. According to the international feed classification principle and the national conditions of China, the "China feed classification and code system" was put forward for the first time. 1987 China feed database information network center was established, realizing the modern management of feed nutrition research. The fully functional feed formula optimization software developed by the director has been widely used in China.

As one of the pioneers of feed science research and feed industry development in China, Zhang Ziyi has presided over or participated in four research achievements and won the National Science and Technology Progress Award, and 15 won the Provincial Science and Technology Progress Award. He has published 28 monographs and more than 260 papers.

Mr. Zhang Ziyi has been engaged in animal nutrition scientific research for a long time, and his outstanding contribution is well-known in the industry, and his commitment to animal husbandry is even more respected by the world. On September 24-26, 2005, the second China Animal Husbandry Science and Technology Forum was held in Rongchang, Chongqing. Mr. Zhang is seventy years old, but he came to the scene with great enthusiasm and hard work. 1998 10 in order to give full play to the advantages of animal husbandry science and technology, talents and resources in Rongchang county, the Chongqing Municipal People's Government approved the construction of "China Chongqing Animal Husbandry Science and Technology City" in Rongchang. On February 5th, 65438, Mr. Zhang came to Rongchang and was invited to attend the 20 10 development planning demonstration meeting of Chongqing Institute of Pig Science (renamed Chongqing Institute of Animal Husbandry Science in 2004), the main technical support unit of "China Chongqing Animal Husbandry Science and Technology City".