Abstract
24-week-old local yellow broiler breeder hens were selected to study the effects of dietary fructo-oligosaccharides(FOS)or antibiotics(bacitracin zinc)on laying performance, serum biochemical indices and dietary mutrient metabolizability. The results showed that: compared with the control group, dietary FOS supplemented with 0.2%, 0.4%, 0.6% could increase the laying rate, average egg weight, feed egg ratio, eggs percent of pass, fertility rate and hatchability of qualified egg, and reduce serum levels of total cholesterol and triglyceride, and improve the apparent metabolizability of dietary nutrients. The effects of diet supplemented with FOS was better than those of diet supplement with 0.05% antibiotics.It was suggested that the appropriate additive amount of FOS in diets for yellow broiler breeder hens should be 0.4%.
Highlights
With the development of social economy and the improvement of people's living standards, consumers are extremely concerned about the food safety of animal products and their impact on human health
The aim of this study is to investigate the effects of different levels of FOS in the diet on egg laying performance, serum biochemical indicators and metabolizability of high-quality yellow broiler hens
Compared with the control group, the egg production rate in the 0.2%, 0.4% and 0.6% FOS has respectively increased by 4.39%, 6.16% and 5.09%(P0.05)
Summary
With the development of social economy and the improvement of people's living standards, consumers are extremely concerned about the food safety of animal products and their impact on human health. Many shortcomings such as drug residues and bacterial resistance caused by long-term use of feed antibiotics have been highly valued by relevant institutions, research scholars and animal producers. Countries such as Europe and Japan have banned the use of antibiotics in feed. The goal is to compare them with antibiotics, to explore the appropriate level of FOS in the diet and the feasibility of replacing the antibiotics so as to provide reference for the rational use of FOS in the production of yellow broilers hens
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