Abstract In order to investigate the potential problems and improvement space in guangdong geese's out-off-season production,the study focused on the leading geese,Magang geese and Shitou geeses in guang-dong province. In this study,we observed and analyzed the egg laying performance,fertilization,incuba-tion and embryo death of the two kinds of geese in the out-off-season production. Results showed that theannual average number of eggs of Magang geese and Shitou geeses was 41. 5 and 29. 7,respectively,while the fertilization rate was 66. 3% and 73. 0%,respectively; egg hatching rate was 57. 0% and 62. 2%,respectively; the fertilized eggs hatching rate was 86. 1% and 86. 1%,respectively; and totalembryo death rate was 9. 4% and 9. 0%,respectively. The ratio of male and female geese and the tem-perature condition had obvious influence on the fertilization rate and the incubation rate; the death rate ofthe first half of the embryo was higher than that in the second half. The results showed that the out-off-season production technology of Shitou geese were more mature,and the technology of Magang geeseshould be improved. The results also found that the environmental temperature,proportion of male geeseand female geese were the major factors of goose production performance and incubation effect.
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