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Fucoidan-rich Sargassum wightii extract supplemented with α-amylase improves growth and immune responses of Labeo rohita (Hamilton, 1822) fingerlings

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Title Fucoidan-rich Sargassum wightii extract supplemented with α-amylase improves growth and immune responses of Labeo rohita (Hamilton, 1822) fingerlings
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Creator Sajina KA, Sahu NP, Varghese T, Jain KK
 
Subject Fucoidan rich seaweed extract .Sargassum wightii .α-Amylase .Metabolic enzymes .Labeo rohita
 
Description Not Available
Fucoidan-rich seaweed extract (FRSE) was prepared from Sargassum wightii by modified alcohol-water extraction method. A45-day feeding trial was conducted to evaluate the individual and combined effect of fucoidan-rich seaweed extract (FRSE—20 g kg−1) and exogenous α-amylase (100 mg kg−1) on the growth response, metabolic enzymes, immune parameters, andamylase gene expression of Labeo rohita. Four purified iso-nitrogenous diets (350 g CP kg−1feed) with different combinations ofα-amylase were prepared. Among the various treatment groups, the group fed with FRSE along with amylase group exhibitedsignificantly higher (p< 0.05) weight gain, SGR, PER, liver metabolic enzyme activities, and lower FCR than the control group.The hematological and serum parameters such as NBT, erythrocyte count, plasma protein, albumin and globulin values weresignificantly higher (p< 0.05) in the FRSE fed groups. LDH activities and antioxidant enzyme activities reduced significantly inFRSE fed groups, whereas activities were significantly higher (p< 0.05) in the α-amylase fed and control groups. The intestinalamylase activities were significantly higher in the α-amylase fed groups, while expression of amylase gene mRNA was signif-icantly lower in the α-amylase-supplemented groups (p< 0.05). There was no significant difference between control andFRSE fed groups in both, intestinal amylase activities and amylase gene mRNA expression. Overall results confirmed thatFRSE extracted from S. wightii enhances immune responses, but not the growth. Further, it does not show any evidence ofan inhibitory effect on intestinal amylase activity as well as on the mRNA levels. Hence, the α-amylase supplementation at100 mg kg−1with20gkg−1FRSE in L. rohita fingerlings diet provides growth-promoting effect without compromising itsimmune-modulating effect.
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Date 2022-06-18T05:36:20Z
2022-06-18T05:36:20Z
2019-01-21
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/72869
 
Language English
 
Relation Not Available;
 
Publisher Research Gate