Effect of temperature on growth performance and immuno-biochemical changes in endangered golden mahseer, Tor putitora (Hamilton, 1923)

Vishal Rathod, Rajesh Kumar, M. S. Akhtar, Tarang Kumar Shah, A. Ciji, D. R. Mahavadiya, Sarman Vagh, Udai Ram Gurjar

Research output: Contribution to journalArticlepeer-review

Abstract

The present study to evaluated the effect of different thermal regimes on growth performance, oxidative stress, antioxidant enzymes, and immuno-biochemical responses of endangered golden mahseer, Tor putitora. A total of 144 healthy fingerlings were randomly distributed into four experimental groups (13 °C, 16 °C, 19 °C, 22 ± 0.5 °C) in triplicate rectangular fiberglass reinforced plastics tanks. The highest and lowest Growth rate, Specific growth rate, Daily growth index, Thermal growth coefficient, Viscera-somatic index, and Growth hormone were observed at 19 °C and 13 °C, respectively. The lowest SGR and VSI were observed at 22 °C. The feed conversion ratio was significantly higher in the control group (p < 0.05), whereas there was a significant decrease in all the treatment groups. The highest and lowest hepato-somatic index was observed at a temperature of 13 °C and 16 °C, respectively, while no significant (p > 0.05) impact of temperature regimes were observed on the length-weight relationship. Regarding hematological indices results, the hematocrit, hemoglobin, total erythrocyte count, and total leucocyte count were significantly higher at 13 °C, whereas the lowest was observed in all the treatment groups (p < 0.05). Higher myeloperoxidase activity and lysozyme activity were observed at 13 °C, whereas lowest at 22 °C. Anti-oxidant potential, SOD, and catalase (muscle) were significantly higher in the control group, whereas they gradually decreased with an increasing temperature. Catalase (liver) level was significantly higher at 22 °C. GST content was significantly higher at 22 °C compared to 13 °C, and GST content increased gradually with an increased temperature. The lipid peroxidation level in the liver and muscle was significantly higher at 22 °C and 13 °C, respectively. The present study concluded that the different phenotypic, antioxidative, and immuno-biochemical modulations of golden mahseer fingerlings in response to different temperature regimes could be used for better management and propagation.

Original languageEnglish
Article number103300
JournalJournal of Thermal Biology
Volume108
DOIs
StatePublished - Aug 2022
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2022 Elsevier Ltd

Keywords

  • Antioxidant enzymes
  • Growth hormone
  • Lysozyme
  • Myeloperoxidase
  • Oxidative stress
  • Thermal regimes

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