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Carbon sources affect water quality and haemato‐biochemical responses of Labeo rohita in zero‐water exchange biofloc system.

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Title Carbon sources affect water quality and haemato‐biochemical responses of Labeo rohita in zero‐water exchange biofloc system.
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Creator Ahmad I, Leya T, Saharan N, Babitha Rani AM, Rathore G, Gora AH, Bhat IA, Verma AK
 
Subject haematological responses, Labeo rohita, metabolic enzyme activity, nitrogen dynamics, organic carbon sources
 
Description Not Available
Biofloc technology degrades waste into useful resources exploiting microbes and can be used in zero‐water exchange systems. To study the effect of different biofloc sys‐tems on haematological and metabolic response of Labeo rohita fingerlings, a 60‐daysexperiment was conducted using four long lasting carbon sources. Seven hundred and fifty fingerlings having mean weight of 4.80 ± 0.12 g were randomly distributed into 15 tanks (n = 50 per tank). Five experimental groups were set in triplicate; T1 (Tapioca), T2 (Wheat), T3 (Corn) T4 (Sugar bagasse) and control (clear water). In‐situ biofloc was devel‐oped in 300 L fibre‐reinforced plastic (FRP) tanks and a C/N ratio of 15 was maintained.Water quality variables indicated ammonia immobilization by heterotrophic bacteria, as the dominant mechanism for the removal of toxic‐nitrogenous compounds in the bio‐floc systems. Results exhibited significantly higher floc volume (53.33 ± 7.88 ml/L), hae‐moglobin content (6.61 ± 0.03 g/dl) and total leucocyte count (109.66 ± 0.06 thousandcells/mm3) in tapioca biofloc system. Furthermore, the digestive and anti‐oxidative en‐zymes activities were also significantly higher in tapioca biofloc system. The lactate dehydrogenase and malate dehydrogenase enzyme assays showed a decreased level in tapioca biofloc system as compared with other biofloc systems and control group. Our observations indicate that tapioca biofloc system could improve the water quality, haematological and anti‐stress responses of L. rohita fingerlings in biofloc systems and thus can effectively replace other carbohydrate sources for the biofloc system.
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Date 2022-06-16T10:48:43Z
2022-06-16T10:48:43Z
2019-06-11
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/72718
 
Language English
 
Relation Not Available;
 
Publisher WILEY