Influence of Different Diets on Intestinal Histological Morphologic Structure of Largemouth Bass Micropterus salmoides
OU Hongxia1, WANG Guangjun1,2, LI Zhifei1, YU Deguang1, GONG Wangbao1
1. Key Laboratory of Tropical & Subtropical Fishery Resource Application and Cultivation, Ministry of Agriculture and Rural Affairs, Pearl River Fishery Research Institute, Chinese Academy of Fisheries Sciences, Guangzhou 510380, China; 2. Guangdong Ecological Remediation Research Center of Aquaculture Pollution, Guangzhou 510380, China
Abstract：Largemouth bass Micropterus salmoides with an initial body weight of 1.2—1.3 g was reared in a pond, and fed chilled fish (chilled fish group) and formulated diet feed (feed group) for 8 months until to remarkeable fish when their intestines were taken and investigated histologically to evaluate the influence of different feed on intestinal morphologic structure of largemouth bass. There were lower mucosal thickness and villus height (V) in foregut and hindgut of largemouth bass in feed group than those in chilled fish group, reduction in relatively mucosal thickness by 13.71% (P<0.05) in foregut and by 22.73% in hindgut (P<0.05), decrease by 22.49% in villus height (P<0.05), and by 20.51% in hindgut (P<0.05). The largemouth bass in feed group had higher villus height, increased by 19.07% (P<0.05), in midgut than the fish in chilled fish group (10.72%) did (P<0.05). There were lower mucosa thickness and villus height/crypt depth (V/C ratio) in the largemouth bass in feed group than those in chilled fish group, decrease by 47.40%(P<0.05) in foregut, 7.40% in midgut (P>0.05), and 22.66% in hindgut (P<0.05), decrease in V/C ratio by 42.7% in foregut (P<0.05), 8.7% in midgut (P<0.05), and 56.5% in hindgut (P<0.05). The largemouth bass in feed group had higher crypt depth (C) than the fish in chilled fish group did, increase by 20.49% (P<0.05) in foregut, 19.36% in midgut (P<0.05), and 39.98% in hindgut (P<0.05). The intestinal absorption and absorption function were shown to be decreased in villus height and V/C ratio, and to be deepened in crypt depth in largemouth bass in feed group, indicating that the health of the intestines of the largemouth bass in feed group was damaged.
欧红霞, 王广军, 李志斐, 余德光, 龚望宝. 不同饲料对大口黑鲈肠道组织结构的影响[J]. 水产科学, 2020, 39(6): 902-907.
OU Hongxia, WANG Guangjun, LI Zhifei, YU Deguang, GONG Wangbao. Influence of Different Diets on Intestinal Histological Morphologic Structure of Largemouth Bass Micropterus salmoides. Fisheries Science, 2020, 39(6): 902-907.
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2020, Vol. 39 
