In numerous ways, diets incorporating probiotics are beneficial to host animals. This study was conducted to evaluate the influence of bio‐flocculated freshwater algae Chlorella vulgaris on the freshwater fish Catla catla. For the process of flocculating algae, probiotics Lactobacillus acidophilus (10307 MTCC) and Bacillus subtilis (MTCC 441) were used. The experimental fish were fed with Artemia franciscana enriched with flocculated algae for 60 days. A control group was fed with unenriched A. franciscana. After the experimental period, there was a significant decrease in anaerobic bacteria and a significant colonization of candidate probiotics in guts of fish fed with flocculated algae‐enriched Artemia. This treatment group also had a better growth performance with a higher average body length and weight (8.7 ± 0.3 cm, 5.83 ± 0.9 g) and survival % (98 ± 1.02). High protease (7.8 µmg/protein⁻¹) and lipase (2.56 µmg/protein⁻¹) activity were also found in the enriched A. franciscana‐fed fish group. Comparatively, higher protein, lipid and PUFA/HUFA contents were also reported in this treatment group. The study found that flocculated algae‐enriched A. franciscana has a positive impact on gut microflora, growth parameters and survival as compared to the unenriched group, and hence, the flocculated algae serve a dual purpose in rearing of C. catla. This study supports the inference that a bio‐flocculated algae‐incorporated diet is a preferable method for larval rearing aquaculture.

中文翻译：

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生物絮凝藻类对淡水鱼Catla catla生长，消化酶活性和微生物区系的影响（汉密尔顿，1922年）

掺入益生菌的饮食在许多方面对宿主动物都是有益的。这项研究旨在评估生物絮凝的淡水藻类小球藻对淡水鱼类Catla catla的影响。对于絮凝藻类的过程，使用了益生菌嗜酸乳杆菌（10307 MTCC）和枯草芽孢杆菌（MTCC 441）。给实验鱼饲喂富含絮凝藻类的法国蒿（Artemia franciscana） 60天。对照组用未富集的进料A.旧金山湾。在实验期之后，厌氧细菌显着减少，并且在富含絮凝藻类的卤虫饲料喂养的鱼的肠道中，候选益生菌的显着定殖。该治疗组还具有更好的生长性能，具有更高的平均体长和体重（8.7±0.3 cm，5.83±0.9 g）和存活率（98±1.02）。高蛋白酶（7.8μmg/蛋白^-1）和脂肪酶（2.56μmg/蛋白^-1）的活性也富集发现A.旧金山湾喂食鱼基。比较而言，该治疗组还报告了较高的蛋白质，脂质和PUFA / HUFA含量。研究发现，絮凝的藻类富集了A. franciscana与未浓缩组相比，对肠道菌群，生长参数和存活率具有积极影响，因此，絮凝藻类在C. catla育种中起双重作用。这项研究支持这样的推论，即掺有生物絮凝藻类的日粮是幼体养殖水产养殖的一种较好方法。