Assessing the impacts of in-feed probiotic on the growth performance and health condition of pangasius (Pangasianodon hypophthalmus) in a farm trial.
Assessing the impacts of in-feed probiotic on the growth performance and health condition of pangasius (Pangasianodon hypophthalmus) in a farm trial.
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DOI：
10.1016/j.aqrep.2021.100699
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发表时间：
2021-07
影响因子：
3.7
通讯作者：
Murray FJ
中科院分区：
文献类型：
--
作者：
Haque MM;Hasan NA;Eltholth MM;Saha P;Mely SS;Rahman T;Murray FJ
在饲料中益生菌处理的幼鱼的生长和存活率显着增加。各处理组在鱼种期和成鱼期的生长性能均高于对照组。血液学参数包括血红蛋白、RBC和WBC在治疗组中显著升高。在鱼种期，益生菌处理组的肠道菌群含量相对较高。益生菌对治疗组的肠道形态结构有积极的影响。研究了益生菌对小黄鱼生长性能、血液学参数、肠道微生物含量和形态学变化的影响。审判分三个阶段，即，幼体至鱼苗（20天）、鱼苗至鱼种（45天）和鱼种至上市的生长期（90天）。放养密度分别为400 m-3，200 m-3，和12 m-3的第1，2和3阶段，分别。第1阶段和第2阶段在同一池塘中的hapas中进行，而第3阶段在混凝土罐中进行。仅在阶段1和2中，以0.2g kg-1饲料的速率每天三次施用饲用中益生菌。在阶段3中，未对任何组应用饲用益生菌。在试验的所有三个阶段中，处理组表现出比对照组更高的生长性能（p < 0.05）。发现治疗组的1期和2期存活率显著较高（p < 0.05）。这表明，使用益生菌作为保护措施，可以在更大程度上提高鱼苗的存活率，这将使pangasius育苗者受益。在阶段2和阶段3中，发现治疗组中的两个血液学参数，包括红细胞（RBC）和白色细胞（WBC）水平显著（p < 0.05）更高，而在阶段2和阶段3中，分别发现治疗组中的葡萄糖和血红蛋白水平显著（p < 0.05）更高。在阶段2和3中，处理组的肠道微生物群含量相对较高。组织学研究结果表明，在pangasius的护理阶段使用益生菌引起了肠道形态结构的积极变化。益生菌对第3阶段的积极影响证实了pangasius的即时和长期生长性能和健康。
Growth and survival % were significantly increased in in-feed probiotics treated pangasius fry. Growth performances of treated groups at fingerling and grow-out phases were higher. Hematological parameters including hemoglobin, RBC and WBC were significantly higher in treatment groups. Gut microbiota content was relatively higher in probiotic treated groups at fingerling phase. Probiotics impact positively changed intestinal morphological structures of pangasius in treatment groups. The effects of in-feed probiotics on growth performance, haematological parameters, gut microbial content, and morphological changes to pangasius fish were assessed. The trial had three phases, i.e., larvae to fry (20 days), fry to fingerlings (45 days), and grow-out phase from fingerlings to marketing (90 days). The stocking densities were 400 m–3, 200 m–3, and 12 m–3 for phases 1, 2, and 3, respectively. Phases 1 and 2 were conducted in hapas in the same pond, whereas phase 3 was performed in concrete tanks. The in-feed probiotic was administered at a rate of 0.2 g kg–1 of feed three times per day in phases 1 and 2 only. In phase 3, in-feed probiotics was not applied to any groups. The treated group exhibited higher growth performances (p < 0.05) than the control in all three phases of experiment. The survival % in phase 1 and 2 were found significantly (p < 0.05) higher in treatment groups. This indicates that pangasius nurserers would benefit from using probiotics as a safeguard to increase fry survival to a greater extent. Two haematological parameters including red blood cells (RBC) and white blood cells (WBC) levels were found significantly (p < 0.05) higher in treated groups in phase 2 and 3, while glucose and hemoglobin level were found significantly (p < 0.05) higher in the treated groups during phases 2 and 3, respectively. The gut microbiota content was relatively higher in the treated groups in phase 2 and 3. Histological findings indicate that the use of probiotics during the nursing phases of pangasius induced a positive change in the intestinal morphological structures. The positive impacts of probiotics on the phase 3 confirmed an immediate and long-term growth performance and health of pangasius.
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影响因子：
0.6
作者：
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