Effect of Different Levels of Dietary Carbohydrate on Growth and Metabolic Enzyme Activity in Clarias batrachus (Linnaeus, 1758)

jita, Apra; Jain, Kartik; Sahu, Narottam Prasad; Aklakur,; Ranjan, Amit

doi:10.20546/ijcmas.2017.611.092

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…In our study, the level of α-amylase in the gut was significantly highest in CRD. Similar observations were noticed in various carp 99 and catfish (Clarias batrachus) 100 earlier after feeding CRD. All these observations help to speculate that the feeding preference/intensity differs with the growth of carp from fingerling to adult.…”

Section: Discussionsupporting

confidence: 85%

Impacts of Protein-, L-Tryptophan-, Carbohydrate-, Oil-Rich Diets on Growth Performance, Levels of Melatonin, Oxidative Stress, Antioxidative Agents, and Vital Digestive Enzymes in the Gut of Juvenile Carp (<I>Catla catla</I>)

Yasmin,

Sutradhar,

Roy

et al. 2024

JER

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The dietary protein, tryptophan, carbohydrate, and oil content of fish feed has many vital roles in the growth performances, stress management, and digestive physiology of fish. However, in this context, the functions of gut melatonin, which depends on the availability of food, timing of food supply, frequency of feeds/day, quality of food, and growth stages of carp, still need to be clarified. The present study aimed to investigate the impact of different experimental diets on growth performances, melatonin, oxidative stress and its essential antioxidants in the gut, and vital digestive enzymes of juvenile carp, Catla catla (mean body weight ~50g). The fish were fed any one of the seven diets viz. (i) a standard diet (SD/control) (with 34.99% protein, 14.56% carbohydrate, 9.84% oil, and 0.36% L-tryptophan) (ii) two protein (PRD1 with 41.02%, and PRD2 with 50.55% protein), (iii) two L-tryptophan (TrpRD1 with 0.96%, and TrpRD2 with 1.36% tryptophan), (iv) one carbohydrate (CRD with 24.62% carbohydrate), and (v) one oil (ORD with 14.68% oil) - rich diets for 30 days. Results indicated that the growth performance was better in PRDs, TrpRDs, and CRD compared to SD but not in ORD-fed carp. Further, PRDs and TrpRDs stimulated gut melatonin and suppressed oxidative stress by enhancing all the studied antioxidant levels. Upregulated digestive enzyme activities were also recorded after the PRDs and TrpRDs supply. However, CRD and ORD-fed groups exhibit less/no impact on most studied parameters, except digestive physiology. Nonetheless, the current study reports for the first time that PRDs and TrpRDs can modulate gut melatonin, oxidative stress, different antioxidants, and digestive efficacy.

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Section: Discussionsupporting

confidence: 85%

Impacts of Protein-, L-Tryptophan-, Carbohydrate-, Oil-Rich Diets on Growth Performance, Levels of Melatonin, Oxidative Stress, Antioxidative Agents, and Vital Digestive Enzymes in the Gut of Juvenile Carp (<I>Catla catla</I>)

Yasmin,

Sutradhar,

Roy

et al. 2024

JER

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show abstract

Impacts of the protein-, L-tryptophan-, carbohydrate-, oil-rich diets on the levels of melatonin, oxidative stress, antioxidative agents, and vital digestive enzymes in the gut of early juvenile (EJv) and late juvenile (LJv) carp (Catla catla)

Yasmin

Sutradhar

Roy

et al. 2023

Preprint

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The present study was performed with the gut tissue of early juvenile (EJv) (body weight range between 40-70g) and late juvenile (LJv) (body weight range between 200-300g) carp, Catla catla, to address three queries. First, to search for any variations in the levels of gut melatonin, oxidative stress levels, its management, and vital digestive enzymes between the EJv and LJv carps. Second, to understand the response of dietary supply of protein-, L-tryptophan-, carbohydrate-, and oil-rich diet on the levels of melatonin concentration, oxidative stress, antioxidative agents, and activity of major digestive enzymes in the gut. Third, to comprehend the role of gut melatonin in managing oxidative stress and modulating the digestive capacity. Data analysis revealed that gut melatonin concentration is higher in EJv carp and lower in LJv carp, while feeding intensity was the reverse. The L-tryptophan and protein-rich diets exhibited stimulatory but different responses to gut melatonin, amount of residual gut content and feeding intensity between the EJv and LJv carps. Substantial evidence was recorded on the role of gut melatonin in regulating stress, levels of antioxidative agents, and vital digestive enzymes, particularly in protein and microbial digestion. Nonetheless, the current study reports for the first time that the nature of gut melatonin synthesis, feeding intensity, generation of oxidative stress, defense by different antioxidants, and digestive capacity vary in LJv carp from its EJv stage. Further, such variations may also be modulated by the dietary components of fish feeds, particularly by the protein or L-tryptophan enrich fraction.

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Effect of Different Levels of Dietary Carbohydrate on Growth and Metabolic Enzyme Activity in Clarias batrachus (Linnaeus, 1758)

Cited by 2 publications

References 12 publications

Impacts of Protein-, L-Tryptophan-, Carbohydrate-, Oil-Rich Diets on Growth Performance, Levels of Melatonin, Oxidative Stress, Antioxidative Agents, and Vital Digestive Enzymes in the Gut of Juvenile Carp (<I>Catla catla</I>)

Impacts of Protein-, L-Tryptophan-, Carbohydrate-, Oil-Rich Diets on Growth Performance, Levels of Melatonin, Oxidative Stress, Antioxidative Agents, and Vital Digestive Enzymes in the Gut of Juvenile Carp (<I>Catla catla</I>)

Impacts of the protein-, L-tryptophan-, carbohydrate-, oil-rich diets on the levels of melatonin, oxidative stress, antioxidative agents, and vital digestive enzymes in the gut of early juvenile (EJv) and late juvenile (LJv) carp (Catla catla)

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