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Avaliação da qualidade do sêmen de tilápia-do-Nilo (Oreochromis niloticus), linhagem chitralada, suplementada com diferentes concentrações de vitamina C

2007; INSTITUTO DE PESCA - APTA - SEC. DE AGR. E ABAST. - SP; Volume: 33; Issue: 1 Linguagem: Inglês

1678-2305

M. Mataveli, Gentil Vanini de Moraes, Danilo Pedro Streit, Lauro Daniel Vargas Mendez, Eduardo Shiguero Sakaguti, Jerri Cuque Toninato, Rejane Cardoso Barbosa, Luiz Sérgio Merlini,

Fish biology, ecology, and behavior

Through this study, the effect of the diet supplementation with 0; 75; 150; 225; 300 mg of vitamin C/kg of ration on semen quality of Nile tilapia (Oreochromis niloticus) was evaluated. Qualitative (spermatic morphology, progressive spermatic motility and spermatic vigor) and quantitative parameters (spermatic concentration, semen volume and total number of spermatozoa) were analyzed. No differences (P > 0.05) on semen volume, spermatic vigor, progressive spermatic motility, spermatic concentration, total number of spermatozoa in the semen released and normal spermatozoa were registered. With the vitamin C increment in the ration, there was observed an increase on the percentual of primary pathologies and a reduction on the percentual of secondary pathologies. However, a reduction of the percentage of total pathologies was observed when 300 mg of vitamin C/kg of ration were added.