Some factors influencing canine sperm motility

Abstract

This study aimed to evaluate whether sperm motility (MOT) in dog semen is influenced by dog age, breed, or number of sperm collections. The study group consisted of four Shih Tzus and five Border Collies, aged 1–8 years. Sperm was collected from each dog once every seven days, for a total of six weeks. Sperm motility did not differ (P > 0.05) based on age and breed. Mean MOT at the first collection (67.4% ± 6.9%) was lower (P < 0.05) than that at the third, fifth, and sixth collections (86.2%; 88.9%; 89.1% ± 6.9%, respectively). Increased MOT was observed after the third collection, demonstrating a positive correlation with the number of sperm collections and sperm motility (P< 0.05). Accordingly, our results indicate that sperm processing efficiency is increased after the collection of three ejaculates.

Effect of the breed on the properties and chemistry of semen in dogs

“…There absence of significant differences in volume between breeds in our study possibly because all animals were sexually active, and they were used for breeding purposes. The invariance of spermatozoa motility rate between dog breeds perhaps due to the high impact of other factors, being stronger than breed factor, such as dog age or number of sperm collections (Rizzoto, 2016). Seminal plasma, a complex mixture of secretions originates from the testis, epididymis and accessory sex glands, modulates the fertilizing ability of spermatozoa (Russell et al, 1984;Strzeżek et al, 2005).…”