Comparative Analysis of Gut Morphology,Gut Microbiota Structure,and Nutrient Utilization Rate of Wulong Geese at Different Egg Production Levels
The experiment aimed to provide a theoretical basis for screening high-yield traits and exploring their regulatory mechanisms in Wulong geese by studying the differences in gut morphology,gut microbiota struc-ture,and nutrient utilization rate among Wulong geese at different egg production levels.A total of 300 Wulong geese at 34 weeks of age with similar body conditions were selected for the experiment and fed the same feed.Single cage feeding was used to continuously record the egg production for 70 days during the peak egg produc-tion period.According to the different egg production levels,a total of 150 Wulong geese with high,medium and low egg production levels were selected,with 50 geese in each group.The results showed that 1)in terms of intestinal morphology,intestinal weight,jejunum villus height and villus height/crypt depth,and ileum vil-lus height/crypt depth in the high-yield group were significantly higher than those in the low-yield group(P＜0.05),and duodenal crypt depth was significantly lower in the low-yield group(P＜0.05).2)In terms of the structure of gut microbiota,the relative abundance of Desulfovibrio in the gut in the high-yield group was high-er than that in the low-yield group,and the relative abundance of unclassified Erysipelotrichiaceae,unclassified Lachrillaceae,Slackia,and Enorma in the cecum in the low-yield group was higher than that in the high-yield group.3)In terms of nutrient utilization rate,calcium utilization rate was significantly higher in the high-yield group than in the low-yield group(P＜0.05).From this,it can be seen that there are significant differences in gut development,gut microbiota structure,and nutrient utilization rate among Wulong geese at different egg production levels.These findings will provide a theoretical basis for the regulation mechanism of high-yield traits and precise breeding of high-yield traits in Wulong geese.[Chinese Journal of Animal Nutrition,2024,36(4):2406-2415]
egg production levelsWulong geesegut morphologystructure of gut microbiotanutrient utili-zation rate
万方数据
维普
