Production performance of Labeo calbasu (Hamilton) in polyculture with three Indian major carps Catla catla (Hamilton), Labeo rohita (Hamilton) and Cirrhinus mrigala (Hamilton) with provision of fertilizers,feed and periphytic substrate as varied inputs |
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| Institution: | 1. Instituto Español de Oceanografía, Centre Oceanogràfic de les Balears, Moll de Ponent s/n, 07015 Palma de Mallorca, Spain;2. Instituto Español de Oceanografía, Centro Oceanográfico de Murcia, 30860 Puerto de Mazarrón, Murcia, Spain;3. Department of Biology, University of Bergen, 5020 Bergen, Norway and the Hjort Centre, Bergen, Norway;4. Caladeros del Mediterráneo S.A., Carretera de la Palma Km 7, Paraje la Estrella, Cartagena, Murcia, Spain;5. Laboratorio I+D Investigación “cultivo larvario de atún rojo”, Área de Producción Animal, Departmento de Ciencia y Tecnología Agraria, Universidad Politécnica de Cartagena, Paseo Alfonso XIII, 4830203 Cartagena, Murcia, Spain;6. Institute of Marine Research, 5817 Bergen, Norway;1. ICAR-Central Inland Fisheries Research Institute, Regional Centre, Guwahati 781 006, India;2. ICAR-Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700 120, India;1. CIIMAR/CIMAR—Centro Interdisciplinar de Investigação Marinha e Ambiental, Rua dos Bragas 289, 4050-123 Porto, Portugal;2. Instituto de Ciências Biomédicas Abel Salazar (ICBAS-UP), Universidade do Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal;3. Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre s/n, Edifício FC4, 4169-007 Porto, Portugal;4. Departamento de Biología, Campus de Excelencia Internacional del Mar (CEIMAR), Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, E-11510, Puerto Real (Cádiz), Spain;5. Aquacria Piscícolas SA, Rua Lavadouro, Quintas do Norte 3870-303 Torreira, Portugal |
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| Abstract: | Inclusion of kalbasu, Labeo calbasu as a candidate species in the Indian major carps based polyculture system was evaluated through a six-month grow-out trial in earthen ponds of 0.08 ha each. Species performance was assessed through provision of varied inputs viz., fertilizers (T-1), fertilizers + supplementary feed (T-2) and fertilizers + supplementary feed + periphytic substrate (T-3) as the three treatments, which were evaluated in replicates. Catla (35%), rohu (35%), mrigal (15%) and kalbasu (15%) were stocked at combined density of 7500 fingerlings/ha. While ponds were fertilized with cowdung, urea and single super phosphate, mixture of groundnut oilcake and rice bran at 1:1 (w/w) was provided as supplementary feed. The periphytic substrate, comprised stripe bamboo mat, was provided at 10% of the pond surface area. Provision of each additional input caused significantly higher increase in overall mean survival, growth, SGR and net biomass yield of carps. Among the carp species, while only rohu and kalbasu showed significantly higher weight gain (234.4 g and 170.3 g, respectively) in T-3, no such increase was noticed either in catla or mrigal. The net production in T-3 (1516.1 ± 24.3 kg ha? 1 6 months? 1) was 13.0 and 73.2% higher than those of T-2 (1341.7 ± 15.5 kg ha? 1 6 months? 1) and T-1 (875.2 ± 15.6 kg ha? 1 6 months? 1), respectively. The study revealed the relative advantage of using periphytic substrates in carp polyculture systems with kalbasu as a component species. |
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