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首页> 外文期刊>Aquaculture International >Responses of dietary supplementation of probiotic effective microorganisms (EMs) in Oreochromis niloticus on growth, hematological, intestinal histopathological, and antiparasitic activities
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Responses of dietary supplementation of probiotic effective microorganisms (EMs) in Oreochromis niloticus on growth, hematological, intestinal histopathological, and antiparasitic activities

机译：益生菌有效微生物（EMS）在牛蒡核苷酸对生长，血液学，肠组织病理学和抗披啶活动中的膳食补充膳食补充

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摘要

Effective microorganisms (EMs) were commonly used to improve water quality in aquaculture, but its use as a fish nutritional supplement has not been investigated. Thus, two experiments were conducted. The first experiment aimed to evaluate the effects of 0%, 2%, and 4% EM-supplemented diets on the growth, hematological, and histopathological parameters on Oreochromis niloticus under two feeding regimens A and B with either 2:1 meal ratio (morning-concentrated diet) or 1:2 (evening-concentrated diet), respectively. EM-fed fish exhibited significantly higher rates of weight gain, specific growth, survival, and feed conversion efficiency mainly in the morning-concentrated diet. WBC count, HGB, and HCT showed significant differential values at different feeding regimens, with the highest recorded with 2% EM diets. Histopathological parameters such as the intestinal perimeter ratio, mucosal fold length, intraepithelial lymphocyte, and goblet cells were elevated exponentially with increased EMs dose. In the second experiment, EM-supplemented diets were assessed for the antiparasitic activity in fish that was experimentally challenged with Trichodina species. Lower infection rates of 28% and 35% were recorded in EM-treated groups at 2% and 4% EM groups, respectively. We concluded that 2% was more efficient than 4% EMs, both for its beneficial health effects and in avoiding the overdosage-associated toxicity risk.
机译：有效的微生物（EMS）通常用于提高水产养殖中的水质，但尚未调查其作为鱼类营养补充剂的用途。因此，进行了两个实验。旨在评估0％，2％和4％的EM补充饮食对两种饲养方案A和B下的生长，血液学和组织病理学参数的疗效评估0％，2％和4％的饮食的影响 - 分别加入饮食）或1：2（晚浓饮食）。 EM喂养的鱼类率显着提高了体重增加，特异性生长，生存和饲料转换效率，主要是在清晨集中的饮食中。 WBC计数，HGB和HCT在不同喂养方案上显示出显着的差分值，最高记录为2％EM饮食。诸如肠道周边比，粘膜折叠长度，上皮内淋巴细胞和脚卵细胞的组织病理学参数随着EMS剂量的增加而呈指数升高。在第二种实验中，评估EM补充饮食，用于用Trichodina物种进行实验挑战的鱼类中的抗披运动活性。在2％和4％的EM组的EM处理基团中记录28％和35％的较低感染率。我们得出结论，2％比4％EMS更有效，无论是有益的健康影响，还避免过量相关的毒性风险。

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