201. Evaluation of dietary yellow loess as an antibiotic replacer on growth, immune responses, serological characteristics and disease resistance in rainbow trout,Oncorhynchus mykiss
- Author
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M.Y. Yoon, H. S. Shin, J. S. Sung, Kumar Katya, Y. K. Lee, J. K. Park, Hyeonho Yun, and Sungchul C. Bai
- Subjects
0301 basic medicine ,medicine.drug_class ,Antibiotics ,04 agricultural and veterinary sciences ,Oxytetracycline ,Aquatic Science ,Biology ,Plant disease resistance ,Serology ,Fishery ,Superoxide dismutase ,03 medical and health sciences ,chemistry.chemical_compound ,030104 developmental biology ,Animal science ,Immune system ,chemistry ,040102 fisheries ,medicine ,biology.protein ,0401 agriculture, forestry, and fisheries ,Rainbow trout ,Lysozyme ,medicine.drug - Abstract
A 12 weeks of feeding trial was conducted to evaluate the effects of different levels of dietary yellow loess as an antibiotic (oxytetracycline) replacer in rainbow trout, Oncorhynchus mykiss. Five experimental diets were formulated to contain no antibiotics or yellow loess (control/CON), three graded levels of yellow loess 5 (YL5), 10 (YL10) and 20 g YL kg−1 diet (YL20) and oxytetracycline at 5 g OTC kg−1 diet. Forty-five fish averaging 39.4 ± 1.6 g (mean ± SD) were randomly distributed in to 15 aquaria. Triplicate groups of fish were fed one of the experimental diets at 1.5 ~ 1.9% of wet body weight per day. At the end of the feeding trial, average weight gain (WG) and specific growth rate (SGR) from fish fed CON diet were significantly lower than those from fish fed YL10, YL20 or OTC diets (P
- Published
- 2015
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