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Artigo Produção Nacional Revisado por pares
BIBTEX RIS

Motility, vigor and pathologies in fresh and cryopreserved semen of Piaractus mesopotamicus.

2009; INSTITUTO DE PESCA - APTA - SEC. DE AGR. E ABAST. - SP; Volume: 35; Issue: 2 Linguagem: Inglês

ISSN

1678-2305

Autores

Danilo Pedro Streit, Ana Cláudia de Oliveira, Ricardo Pereira Ribeiro, Rodolfo Nardez Sirol, Gentil Vanini de Moraes, Juliana Minardi Galo, Melanie Digmayer,

Tópico(s)

Animal Genetics and Reproduction

Resumo

Spermatozoa morphological alterations of eleven pacus (Piaractus mesopotamicus) were evaluated before and after frozen-thawed processing. The semen cryopreservation caused a decrease (P 0.05) before and after cryopreservation. The progressive motility and the spermatic vigor were reduced in frozen-thawed semen in 66.45 and 34.2%, respectively (P<0.05). Moreover, bent tail abnormality and broken tail pathology were increased in 65.00 and 41.25% (P<0.05) after frozen thawed. Also, macrocephaly and distal cytoplasmatic drop were observed in the semen only after freezing, while short tail spermatozoa were observed only in fresh semen. However, a higher occurrence of loose tail was observed in fresh semen.

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