Ponomareva Elena N, Sorokina Marina N, Grigoriev Vadim A, Mazanko Mariya, Chistyakov Vladimir A, Rudoy Dmitry V
Federal Research Center, Southern Scientific Center of the Russian Academy of Sciences, Rostov-on-Don 344006, Russia.
Center for Agrobiotechnology, Don State Technical University, Rostov-on-Don 344002, Russia.
Food Sci Anim Resour. 2024 Jul;44(4):805-816. doi: 10.5851/kosfa.2023.e75. Epub 2024 Jul 1.
The aim of this study was to evaluate a new B-1895 probiotic as a feed additive for farmed trout. Final weight, absolute and average daily gain of fish, and average daily growth rate were higher in the group that received the probiotic than in the control group (p<0.05). Moreover, the probiotic-fed trout had more intense growth rates than the control group (higher by 15.7%; p<0.05). A decrease in feed ratio was also observed in the group that received probiotic (25% decrease; p<0.05), indicating more efficient digestion and assimilation of feed. In general, the introduction of probiotic in the feed did not adversely affect the functional status of the fish. In young trout of the control group, when assessing the general chemical composition of the organism in the muscle tissue revealed significantly (p≤0.001) higher level of moisture content by 5.1% and lower by 11.0% dry matter content. In muscle, the protein content was higher by 1.33% (p≤0.001) and fat content by 2.1% (p≤0.001) in experimental fish. Generally, , and coliform bacteria were found in the intestinal samples of rainbow trout. Significant reliable difference (p≤0.05) between the samples of experimental and control groups was noted in the content of bacteria. In the control group, 5.0±0.4×10 CFU/g was detected, while in the experimental group 8.4±0.8×10 CFU/g. Overall, the data indicate that probiotic bacteria B-1895 has no adverse effect on selected microorganisms in the study fish.
本研究的目的是评估一种新型B - 1895益生菌作为养殖鳟鱼饲料添加剂的效果。接受益生菌的组中鱼的终末体重、绝对日增重和平均日增重以及平均日生长率均高于对照组（p<0.05）。此外，喂食益生菌的鳟鱼生长速率比对照组更高（高15.7%；p<0.05）。在接受益生菌的组中还观察到饲料系数降低（降低25%；p<0.05），这表明饲料的消化和同化更有效率。总体而言，在饲料中添加益生菌对鱼的功能状态没有不利影响。在对照组的幼鳟中，对肌肉组织中机体的一般化学成分进行评估时发现，水分含量显著（p≤0.001）高出5.1%，干物质含量低11.0%。在肌肉中，实验鱼的蛋白质含量高1.33%（p≤0.001），脂肪含量高2.1%（p≤0.001）。一般来说，在虹鳟鱼的肠道样本中发现了 和大肠菌群。实验组和对照组样本在 细菌含量上存在显著可靠差异（p≤0.05）。在对照组中，检测到5.0±0.4×10 CFU/g，而在实验组中为8.4±0.8×10 CFU/g。总体而言，数据表明益生菌B - 1895对研究鱼体内的特定微生物没有不利影响。
