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Post-thaw (PT) normal apical ridge (NAR) acrosome integrity of spermatozoa held in Beltsville Thawing Solution (BTS) and seminal plasma (SP) of fraction 1 (SP1) and fraction 2 (SP2) of boar ejaculates at different storage periods. (A) 0 h and (B) 2 h PT storage. Values are expressed as the means (± SEM) of four to five ejaculates from seven boars. Values with different letters (a,b) within treatment are significant at p < 0.05.
