title: [Sperm examination of the boar (author's transl)].
abstract: During the last ten years the stock of pigs in the Netherlands has doubled. The number of adult boars on pig farms there has in that time trebled. Sperm examination of boars by the Gezondheidsdienst voor Dieren (Veterinary Health Service) in the Dutch province of North Brabant have increased from 83 boars in 1968 to 2045 boars in 1974. The data of boars examined in 1972, 1973, and 1974 have been used to provide an idea of the effects of breed, age, and season on the reasons for the examination and on the quality of the sperm. The group of boars offered for an informatory examination prior to being used has increased relatively strongly in number.
mesh_terms: D000367:Age Factors; D000818:Animals; D006799:Housing, Animal; D008297:Male; D009426:Netherlands; D012621:Seasons; D013045:Species Specificity; D013079:Sperm Maturation; D013081:Sperm Motility; D013094:Spermatozoa / Q000032:analysis* / Q000166:cytology; D013552:Swine
vernacular_title: Sperma-onderzoek bij de beer