Some factors influencing canine sperm motility

Guilherme RIZZOTO, Antonio Sergio VARELA JUNIOR, Maria Eduarda Bicca DODE, Karina Lemos GOULARTE, Thomaz LUCIA JUNIOR, Carine Dahl CORCINI
2016 Revista Acadêmica  
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%;
more » ... ollections (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. [P] Keywords: Breed. Age. Number of collections. Sperm. Resumo Este estudo teve como objetivo avaliar se a motilidade espermática (MS) é alterada em relação a idade do animal, ao número de coletas seminais e as raças de cães. Foram utilizados nove cães com 1 a 8 anos de idade (quatro da raça Shih Tzu e cinco da raça Border Collie), sendo realizadas 6 coletas de cada reprodutor, com intervalo de 7 dias entre as coletas. A motilidade espermática não apresentou diferença estatística em relação a idade e raça dos animais (P>0,05). A média da MS na 1ª. coleta (67.4 ± 6.9%) foi inferior a 3ª., 5ª. e 6ª. (86,2; 88,9; 89,1±6,9%, respectivamente) (P<0.05). Um aumento na MS Rev. Acad. Ciênc. Anim. 2016; 14:69-73 Rizzoto G et al.
doi:10.7213/academica.14.2016.07 fatcat:265slc6wdbflxaae32tkfv6e4q