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Effect of dietary incorporation of dry-powdered water hyacinth (Eichhornia crassipes) meal on growth and digestibility of Labeo rohita fingerlings

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Title Effect of dietary incorporation of dry-powdered water hyacinth (Eichhornia crassipes) meal on growth and digestibility of Labeo rohita fingerlings
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Creator Debnath D, Yengkokpam S, Bhattacharjya BK, Biswas P, Prakash C, Kohli MPS and Sharma AP
 
Subject Labeo rohita Eichhornia crassipes Digestibility Growth
 
Description Not Available
Keeping the importance and search for unconventional feed resources and/or standardizing their level of incorporation in mind, we incorporated dry-powdered water hyacinth (Eichhornia crassipes) meal in feeds and studied its effect on growth and digestibility in Labeo rohita fingerlings. Five feeds with 30 % crude protein level were formulated using Eichhornia meal (EM) at 0 (control), 5 (EMF1), 10 (EMF2), 15 (EMF3) or 20 % (EMF4) of the diet replacing rice bran by equal proportions. Three hundred fingerlings (7.40 ± 0.05 cm; 5.27 ± 0.12 g) were distributed into fifteen tanks (200 l capacity) and fed the experimental diets for 60 days. In the last 30 days, digestibility studies were conducted using 0.5 % chromic oxide as an external marker in feed. At 10 % inclusion of EM, the experimental fish showed the highest weight gain percent (WG%), specific growth rate (SGR), protein efficiency ratio and apparent net protein utilization with lowest feed conversion ratio. Whereas the growth performance at 15 % inclusion level was comparable with the control and further increase to 20 % level of EM showed reduced growth responses but the feed was fairly palatable to the fish. Lower digestibility was also observed in EMF4 group. It is concluded that EM can be included at 15 % level in the feed of L. rohita fingerlings without adversely affecting the growth, dry matter and nutrient digestibility. However, economic feasibility of this feedstuff needs to be analyzed to see whether the reduced cost of diets would compensate for the reduced performance of fish at higher inclusion levels.
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Date 2018-11-05T11:09:52Z
2018-11-05T11:09:52Z
2016-01-01
 
Type Research Paper
 
Identifier Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/9413
 
Language English
 
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Publisher Not Available