Effects of Dietary Metabolizable Energy and Crude Protein Levels on Reproductive Performance of Magang Geese
【摘要】：[Objective] To investigate the effects of different levels of metabolizable energy and crude protein on egg laying performance and hatching efficiency in Magang geese. [Method] The healthy Magang geese at 2 years old were randomly assigned into four groups, group I, group II, group III and control group. They were fed with diets at different levels of metabolizable energy and crude protein, and then their eggs were collected and hatched. During the test, their health was observed, and the egg weight, egg yield and hatching rate were recorded. [Result] The average egg laying rates and average egg weight were significantly higher in the group I, group II and group III than in the control group. The hatchable egg rates and egg fertilization rates of the group I, group II and group III were also increased, and significance was found between the group III and the other group (P 0.05). The feed costs of the three test groups were lower than that of the control group, and the feed cost was higher in the group III than that in the group I and II. [Conclusion] The levels of metabolizable energy and crude protein in diet have significant effects on laying performance and hatching efficiency in Magang geese.