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Digestive and metabolic responses towards diet optimization in Labeo rohita.

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Title Digestive and metabolic responses towards diet optimization in Labeo rohita.
Not Available
 
Creator Debnath. D
Pal.A.K
Sahu.N.P
Yengkokpam.S
Sukumaran.K
Jain.K.K
Baruah.K
 
Subject Crude protein
Digestive enzymes
Labeo rohita
Metabolites
Growth
Correlation matrix
 
Description Not Available
Labeo rohita, commonly called rohu is one of the most important fish species for aquaculture in India. Digestive enzyme response and
metabolic profile of fingerling L. rohita to different dietary crude protein (CP) levels (viz. 25, 30, 35 and 40%) were studied in an attempt to
optimize a practical diet formulation for this species. After 45 days of feeding, activity of digestive enzymes and metabolite concentrations were
assayed. Amylase, lipase and alkaline phosphatase (ALP) activities were not influenced by the dietary protein, but proteolytic and acid
phosphatase (ACP) activities varied (Pb0.05) between the treatments. Proteolytic activity showed a second order polynomial relationship with
dietary crude protein (CP) as Y= 0.0734X2+ 4.937X−68.37, r
2= 0.97. A positive correlation was observed between dietary CP and amylase
(r
2= 0.78). All the metabolites except muscle glucose showed significant change corresponding to the dietary protein levels. Glucose and glycogen
levels corresponded to the dietary carbohydrate levels. Muscle and plasma pyruvic acid increased as the crude protein in the diet increased,
whereas liver pyruvic acid showed the opposite trend. Muscle protein content was not affected by dietary CP. Protein fractions in plasma (total
protein, albumin and globulin) showed maximum values in 30% CP fed group. It is concluded that proteolytic activity and ACP are the major
digestive enzymes responsive to dietary CP in L. rohita fingerlings. Considering the cost effectiveness of the diet, and based on liver and plasma
free amino acid levels and plasma protein fractions, 30% crude protein is recommended as the optimal dietary protein for L. rohita fingerlings.
Not Available
 
Date 2023-08-24T05:03:04Z
2023-08-24T05:03:04Z
2012-01-01
 
Type Journal
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/80493
 
Language English
 
Relation Not Available;
 
Publisher Not Available