1. Effects of Natural Diet on Growth on White-Leg Shrimp Litopenaeus vannamei Under Experimental Mesocosms Emulating an Intensive Culture System
- Author
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Soto-Jiménez Mf and Bojórquez-Mascareño Ei
- Subjects
Nitrogen balance ,biology ,business.industry ,fungi ,Litopenaeus ,Aquatic animal ,Aquatic Science ,biology.organism_classification ,Feed conversion ratio ,Shrimp ,Fishery ,Shrimp farming ,Animal science ,Aquaculture ,business ,Shellfish - Abstract
A study of nitrogen (N) balance and stable isotopes was conducted to assess the impact of natural diet on white leg shrimp (Litopenaeus vannamei) under experimental mesocosms emulating an intensive culture system. We tested isonitrogenous diets by using commercial formulated feed (FF), natural food (NF) produced in the column water (FF+NF) and sediments (FF+NF+S) on earth ponds, and combinations 50:50 ratio based on N content. A followed study was conducted in three representative ponds at farm level. Specimens were tested for gain of weight, survival rate, specific growth rate (SGR) and parameters k and m and t50 in four trials, from post-larvae of twenty days (PL-20’s) to larger juveniles. Specimens raised on FF+NF+S and FF+NF treatments showed weight, SGR´s and survival significantly higher than shrimp raised on pure diets (FF and NF) and in ponds at the same time (p
- Published
- 2012
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