| In order to promote the efficient and healthy development of yellow-feathered broiler breeders, it is very important to solve the existing problems such as dietary waste, environmental pollution and low reproductive efficiency. The paper summarized the relevant domestic and foreign literature on nutritional requirements and application of feeds of yellow-feathered broiler breeders. It summed up studies about requirements of metabolic energy, crude protein, main essential amino acids (methionine, lysine, threonine, tryptophan, arginine and isoleucine), vitamins (VA, VD and VE), and mineral elements (Ca, P, Fe, Cu, Zn, Mn and Se), feed resource evaluation and utilization, application of bioactive additives, probiotics, plant extracts and Chinese herbal preparations, anti-stress agents in breeders of yellow-feathered broider, and analyzed the trend of future researches. On the whole, in recent years, there have been more and more researches on nutritional requirements and application of feed additives in yellow-feathered broiler breeders, but mainly concentrated in the egg-laying period. The highlight in the researches on nutritional requirements in recent years was correlation analysis between metabolic energy requirements per day and metabolic body weight, average daily gain, daily egg production. The prediction models of dietary nitrogen-corrected metabolic energy requirements for three types of breeder hens of yellow-feathered broilers were established with metabolic weight, average daily gain and egg production as variables. At present, there are few reports on nutrition and feed restriction technology in the brooding period and growing period of yellow-feathered broiler breeders. Key techniques for feed resource evaluation and safe & efficient utilization and reproductive performance improvement of breeder hens still need to be broken through. |
