Effects of season, breed and age on the boar sperm quality. 2. The extended sperm | Uticaj godisnje sezone, rase i starosti nerastova na kvalitet sperme. 2. Razredjena sperma
2003
Stancic, B., Poljoprivredni fakultet, Novi Sad (Serbia) | Gagrcin, M., Poljoprivredni fakultet, Novi Sad (Serbia) | Radovic, I., Poljoprivredni fakultet, Novi Sad (Serbia)
Total of 182 ejaculates were extended in 1:4 proportions and investigated for progressive motility (PM) ratio, after 24h and 72h of storage at +17 deg C. The boars of Yorkshire, Landrace, Duroc, Hempshire and Pietrain pure breeds and F1-crossbreds were divided according to age. Extended sperm samples were investigated within 4 seasons of year: January-March, April-June, July-September and October-December. The PM is greater than or equal to 65% was estimated in 60% of ejaculates after 24h and in 25% ejaculates after 72h preservation in vitro. Some differences in progressive motility, influenced by season, breed and age of boars, were established. Present results are preliminary and require further investigations.
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