Histological Observation of Liver and Distal Intestine of Fingerling Rainbow Trout, Oncorhynchus mykiss, Fed Defatted Soybean Meal Based Non-Fish Meal Diet Supplemented with Gall Powder
Histological Observation of Liver and Distal Intestine of Fingerling Rainbow Trout, Oncorhynchus mykiss, Fed Defatted Soybean Meal Based Non-Fish Meal Diet Supplemented with Gall Powder
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饲喂脱脂豆粕非鱼粉饲料加胆粉的虹鳟鱼种肝脏和远端肠的组织学观察
DOI：
10.11233/aquaculturesci1953.55.225
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
N. Suzuki
中科院分区：
文献类型：
--
作者：
Yasuro Iwashita;Takeshi Yamamoto;T. Goto;N. Suzuki
以脱脂豆粕非鱼粉日粮（SBM）、含1.5%牛胆粉的豆粕非鱼粉日粮（SBM+B）和对照鱼粉日粮（FM）三种饲料喂养虹鳟鱼Oncorhynchus mykiss，以研究胆粉中胆汁盐对肝脏和远端肠组织学的影响。饲喂SBM饲料的鱼的肝细胞和肝管上皮细胞被认为是萎缩的。饲喂SBM饲料的鱼的远端肠道显示出微绒毛和胞饮空泡的缺乏、肠上皮细胞的脂肪变性和固有层结缔组织的增殖。然而，饲喂 SBM+B 饲料的鱼的肝脏和肠道组织学特征与 FM 对照饲料相似。这些结果表明，在 SBM 中补充牛胆粉可能会改善远端肠道中脂质的消化和吸收，这可能是由于增加了从肝脏到肠道的胆汁盐分泌。
Three diets, defatted soybean meal based non-fish meal diet (SBM), soybean meal based non-fish meal diet containing 1.5% bovine gall powder (SBM+B) and control fish meal-based diet (FM), were fed to rainbow trout, Oncorhynchus mykiss, to examine effects of bile salts in gall powder on the histology of liver as well as distal intestine. Hepatocytes and epithelial cells in hepatic ducts of the fish fed SBM diet were considered to be atrophied. Lacking of microvilli and pinocytotic vacuoles, fatty degeneration of intestinal epithelial cells and proliferation of connective tissue in lamina propria were shown in distal intestine of fish fed the SBM diet. However hepatic and intestinal histological features in fish fed SBM+B diet are similar to those in FM control diets. These results suggest a possibility that supplementation of bovine gall powder to the SBM improves digestion and absorption of lipid in distal intestine probably due to increasing secretion of bile salts from liver into intestine.