In animals, many factors affect the small intestinal function and cecal microorganisms, including body weight and genetic background. However, whether paternal weight impacts the small intestinal function and cecal microorganisms remains unknown to date. The current study used Nonghua sheldrake to estimate the effect of paternal weight on the intestine of the offspring by evaluating differences in small intestinal morphology, digestive enzyme activity, and cecal microorganisms between the offspring of male parents with high body weight (group H) and that of male parents with low body weight (group L). The results of the analysis of small intestinal morphology showed that the villus height of the jejunum of group H ducks was higher than that of group L ducks, and the difference was significant for ducks at 10 weeks of age. Moreover, the villus height/crypt depth of the duodenum in group H significantly exceeded that of group L at a duck age of 2 weeks. The amylase activity in the jejunum content of group H exceeded that of group L at 5 and 10 weeks of age. Furthermore, the proportion of the Firmicutes to Bacteroidetes was significantly higher in group H (duck age of 2 weeks). Among the genera with a relative abundance exceeding 1%, the relative abundances of genera Desulfovibrio, Megamonas, Alistipes, Faecalibacterium, and Streptococcus observed in group H were significantly different between group H and group L. For the first time, this study identifies the effect of paternal weight on offspring small intestinal function and cecal microorganisms. Consequently, this lays a foundation for further research on the relationship between male parents and offspring intestinal function.

中文翻译：

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鸭子的父亲体重可能会对后代的小肠功能和盲肠微生物产生影响。

在动物中，许多因素会影响小肠​​功能和盲肠微生物，包括体重和遗传背景。然而，迄今尚不清楚父亲的体重是否影响小肠功能和盲肠微生物。当前的研究使用农化来评估父本体重对后代肠道的影响，方法是评估体重较高的雄性父母（H组）的后代在小肠形态，消化酶活性和盲肠微生物方面的差异，以及低体重的男性父母（L组）。小肠形态学分析结果表明，H组鸭空肠的绒毛高度高于L组鸭，而10周龄鸭的空肠绒毛高度差异显着。此外，在2周鸭龄时，H组十二指肠的绒毛高度/隐窝深度显着超过L组。在5周和10周龄时，H组空肠中的淀粉酶活性超过L组。此外，H组（鸭龄为2周）的硬毛虫与拟杆菌的比例明显更高。在相对丰度超过1％的属中，在H组中观察到的Desulfovibrio，Megamonas，Alistipes，Faecalibacterium和Streptococcus属的相对丰度在H组和L组之间存在显着差异。本研究首次确定了这种作用体重对后代小肠功能和盲肠微生物的影响 所以，