An 8-week feeding trial was conducted with juvenile red drum to evaluate four different prebiotics:
fructooligosaccharides (FOS) in the form of inulin, galactooligosaccharides (GOS), Bio-MOS®, containing
mannanoligosaccharides (MOS) derived from yeast, and Previda™ containing galacto-gluco-mannans from
hemicellulose extract. Each prebiotic was added at a level of 10 g kg−1 to the basal diet which was formulated
to contain 41% protein and 10% lipid. Each diet was randomly assigned to three aquaria and fed twice daily to
apparent satiation. Fish fed the diet containing Previda™ had significantly higher (Pb0.05) weight gain than
fish fed the basal diet and the one supplemented with Bio-MOS®. Feed efficiency and protein efficiency ratio of
fish fed the various diets were not significantly different (PN0.05), although fish fed the basal diet had the
lowest values. Fish fed the Bio-MOS® diet had lower survival than fish fed the other diets. Hepatosomatic
index, muscle ratio and condition factor were not affected by the dietary treatments. Fish fed the FOS diet had
a significantly lower neutrophil oxidative radical production than fish fed the other diets. However, serum
lysozyme activity was significantly lower (Pb0.05) in fish fed the basal diet compared with those fed the diets
supplemented with prebiotics. Quantitative changes in the ultrastructural characteristics of the gastrointestinal
tract of red drum fed the various diets were evaluated using histological methods. Fold height and
enterocyte height in pyloric caeca and proximal, mid- and distal intestines were not significantly affected by
diet. However, microvilli heights in pyloric caeca, proximal and mid-intestine were significantly increased by
the supplementation with prebiotics. In this experiment, Previda™ supplementation resulted in significant
improvements in growth performance and immunological responses, even as compared to other
commercially available prebiotics. Because prebiotic supplementation may result in enhancement of different
performance indicators in various fish species, tailored evaluations are recommended before suggesting
specific prebiotic strategies.
An 8-week feeding trial was conducted with juvenile red drum to evaluate four different prebiotics:fructooligosaccharides (FOS) in the form of inulin, galactooligosaccharides (GOS), Bio-MOS®, containingmannanoligosaccharides (MOS) derived from yeast, and Previda™ containing galacto-gluco-mannans fromhemicellulose extract. Each prebiotic was added at a level of 10 g kg−1 to the basal diet which was formulatedto contain 41% protein and 10% lipid. Each diet was randomly assigned to three aquaria and fed twice daily toapparent satiation. Fish fed the diet containing Previda™ had significantly higher (Pb0.05) weight gain thanfish fed the basal diet and the one supplemented with Bio-MOS®. Feed efficiency and protein efficiency ratio offish fed the various diets were not significantly different (PN0.05), although fish fed the basal diet had thelowest values. Fish fed the Bio-MOS® diet had lower survival than fish fed the other diets. Hepatosomaticindex, muscle ratio and condition factor were not affected by the dietary treatments. Fish fed the FOS diet hada significantly lower neutrophil oxidative radical production than fish fed the other diets. However, serumlysozyme activity was significantly lower (Pb0.05) in fish fed the basal diet compared with those fed the dietssupplemented with prebiotics. Quantitative changes in the ultrastructural characteristics of the gastrointestinalทางเดินของกลองสีแดงเลี้ยงอาหารต่าง ๆ ถูกประเมินโดยใช้วิธีการทางเนื้อเยื่อวิทยา พับสูง และenterocyte สูงใน pyloric caeca และใกล้เคียง กลาง และปลายลำไส้ไม่ได้รับผลกระทบโดยมากอาหาร อย่างไรก็ตาม microvilli ไฮท์ใน pyloric caeca ใกล้ชิด และลำไส้กลางมีมากเพิ่มขึ้นเสริม ด้วย prebiotics ในการทดลองนี้ Previda ™เสริมผลสำคัญการปรับปรุงในการเจริญเติบโตและการตอบสนองปรับภูมิคุ้มกัน แม้เมื่อเทียบกับอื่น ๆprebiotics จำหน่าย เนื่องจากพรีไบโอติกส์เสริมอาจทำของแตกต่างกันตัวชี้วัดในสายพันธุ์ปลาต่าง ๆ ปรับประเมินแนะนำก่อนที่จะแนะนำกลยุทธ์เฉพาะพรีไบโอติกส์
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