Abstract

TERRONES ESPANA, Shirley  and  REYES AVALOS, Walter. Effect of diets with biological silage of mollusk residues on the growth of shrimp Cryphiops caementarius and tilapia Oreochromis niloticus in intensive co-culture. Scientia Agropecuaria [online]. 2018, vol.9, n.2, pp.167-176. ISSN 2077-9917.  http://dx.doi.org/10.17268/sci.agropecu.2018.02.01.

The aim was to evaluate the effect of diets with biological silage of mollusk residues on the growth of shrimp Cryphiops caementarius and Oreochromis niloticus tilapia in intensive co-culture. Seventy-two male shrimp (5.16 ± 0.37 cm total length and 4.78 ± 1.13 g wet weight) and 48 reversed tilapia fry (4.28 ± 0.31 cm total length and 2.86 ± 0.45 g wet weight). Three experimental diets (25, 50 and 75% of silage) and a control diet were used, with three replicates. The silage was made from viscera and mantles of the mollusk Argopecten purpuratus. The co-culture was carried out in 12 aquariums (55 L) implemented with six individual shrimp culture containers (32 shrimp m-2), and the tilapia was stocked in the remaining water (22 tilapias m-2). The experiment lasted 90 days. Shrimp growth was similar between treatments. The growth of tilapia was greater with 25% and 50% silage. The FCA was low (1.5 to 1.7) in shrimp and high (1.9 to 2.1) in tilapia, up to 50% silage. Diet with 50% silage is recommended for shrimp males, although for tilapia it is suggested to try another diet.

Keywords : Biological silage; intensive culture; growth; shrimp; tilapia of the Nile.

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