Association of level of digestible energy in total length, weight of gonads and gonadosomatic index of female Piaucu ('Leporinus macrocephalus', SPIX 1829) in post larval stage

The objective of this work was to associate the energy digestible level of the diet to ovary development in post larval stage. Twenty-four female fish were used with weight and average initial length of 0.33 plus or minus 0.11 g and 2.94 plus or minus 0.39 cm, respectively. There were four treatment...

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Published inRevista brasileira de saúde e produção animal Vol. 11; no. 1; pp. 242 - 251
Main Authors Navarro, R D, Maldonado, IRdos SC, Matta, SLPda, Ribeiro Filho, OP, Pereira, FKS, Rodrigues, S S, Calado, L L
Format Journal Article
LanguagePortuguese
Published 01.01.2010
Subjects
Freshwater
Leporinus macrocephalus
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Summary:The objective of this work was to associate the energy digestible level of the diet to ovary development in post larval stage. Twenty-four female fish were used with weight and average initial length of 0.33 plus or minus 0.11 g and 2.94 plus or minus 0.39 cm, respectively. There were four treatments: 2600, 2700, 2800, and 2900 kcal of DE/kg of ration. Digestible energy levels influenced the final weight up to the estimated level of 2757.142kcal/kg. However, there was no significant effect for total length, gonad weight, and gonadossomatic index in females. The level of digestible energy did not provide better initial evelopment of the ovary. This information may guide new experiments, to improve the conditions of cultivation, to value the activity on the economic sense as well as increase the number of fingerlings for aquaculture.
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ISSN:1519-9940