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The effect of water oxygen saturation on growth and haematological profile of juvenile peled Coregonus peled (Gmelin)
Author(s) -
Matousek Jan,
Prokesova Marketa,
Novikava Katsiaryna,
Sebesta Roman,
Zuskova Eliska,
Stejskal Vlastimil
Publication year - 2017
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.13356
Subject(s) - biology , zoology , juvenile , hyperoxia , hatching , oxygen , growth rate , body weight , saturation (graph theory) , fishery , ecology , endocrinology , mathematics , chemistry , geometry , organic chemistry , combinatorics
The effect of varying oxygen saturation regimes on growth and haematological profiles of peled Coregonus peled was investigated on fish of initial age 90 days post hatching. Eighty‐five juveniles per group (initial body weight 3.09 ± 0.80 g) were submitted to a 63‐day experiment with one of four water saturation regimes: normoxia ( NOR m, 80%–90%), hypoxia ( HYP o, 50%–60%), hyperoxia ( HYP e, 150%–160%) and intermittent hyperoxia ( iHYP e, 150%–160% ‐ 80%–90%). Survival rate in NOR m, HYP e and iHYP e ranged from 96.3 ± 2.1% to 97.7 ± 2.7, but survival 87.5 ± 3.0 was significantly lower in the HYP o group. No differences were observed in feed conversion ratio. The highest final body weight of 18.2 ± 4.6 g and a specific growth rate of 2.81 ± 0.01%/day were seen in the NOR m group. Significant differences were found in haemoglobin concentration with increased saturation. The fish had lower haemoglobin 55.00 ± 5.72 and 51.35 ± 10.89 g/L in treatments HYP e, iHYP e with compared to the normoxia (64.22 ± 5.78 g/L). Haematocrit was similar in the groups HYP o, NOR m and iHYP e (0.55 ± 0.04, 0.58 ± 0.05 and 0.54 ± 0.09) with the exception of HYP e, which was significantly lower (0.48 ± 0.06). Significantly lower count of erythrocyte was observed in iHYP e group (0.88 ± 0.20) with compared to the normoxia (1.06 ± 0.13). The supersaturation level was not associated with effects on growth and survival, and adding oxygen is not recommended for intensive rearing of peled. The results showed normoxia oxygen level to be the most suitable conditions for peled.