Sperm concentration and viability of bull semen frozen in 2004-2010, from the collection of the National Bank of Biological Material
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The aim of this study was to carry out a follow-up evaluation of cryopreserved semen of native breed cattle collected in the National Bank of Biological Material (NBBM). The oldest material, from 2004-2010, was included in the study. A total of 70 ejaculates f... ...
