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Soybeanβ-conglycinin and glycinin reduced growth performance and the intestinal immune defense and altered microbiome in juvenile pearl gentian groupers Epinephelus fuscoguttatus♀×Epinephelus lanceolatus♂

引用

Animal Nutrition 2022年第2期9卷 193-203页

作者： Yuanfa He Jinfang Liang Xiaohui Dong Hongyu Liu Qihui Yang Shuang Zhang Shuyan Chi Beiping Tan Laboratory of Aquatic Animal Nutrition and Feed Fisheries CollegeGuangdong Ocean UniversityZhanjiang 524088China Aquatic Animals Precision Nutrition and High-Efficiency Feed Engineering Research Center of Guangdong Province Zhanjiang 524088China Key Laboratory of Aquatic Livestock and Poultry Feed Science and Technology in South ChinaMinistry of AgricultureZhanjiang 524088China

The utilization efficiency of soy protein is affected by its 2 anti-nutritional substancesdthe antigens bconglycinin and *** study investigated their effects on the growth performance,intestinal immune defense,andmicrobiome in juvenile pearl gentian groupers(Epinephelus fuscoguttatus♀×Epinephelus lanceolatus♂).Three isonitrogenous and isolipidic diets were formulated containing fishmeal supplemented with 70 g/kgβ-conglycinin or 100 g/kg glycinin,or no supplementation(control).Each experimental diet was fed to quadruplicate groups with 30 fish in each tank for 8 *** inclusion of eitherβ-conglycinin or glycinin significantly reduced weight gain and specific growth rates,and cell proliferation of the distal *** evaluation of the intestine tract revealed the inflammation signs,characterized by reducing of plica height and width as well as the number of the goblet cells,and widening of the lamina *** group fed theβ-conglycinin diet had reduced lysozyme activity,contents of immunoglobulin M and complements 3 and *** activities of caspase-3 and-9 were observed in the group fed the bconglycinin diet compared to the other 2 *** the intestinal microbiota,the relative abundances of the potentially pathogenic genera Photobacterium and Vibrio were significantly higher in the glycinin group than those in ***,the existence of soybean antigens(β-conglycinin or glycinin)could damage the structural integrity of the intestine,reduce immune defense,reshape the intestinal microbiome and,ultimately,impair growth in fish.

关键词： β-Conglycinin Glycinin pearl gentian groupers Immune response Intestinal microbiota

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