[The use of routine testing for pregnancy in sows using ultrasonic apparatus (author's transl)].
Description of a method by which routine tests for pregnancy can be performed in sows at an early stage using ultrasonic apparatus. A calculation model based on field studies shows that this method of testing used as a routine procedure is mainly of importance on those pig-breeding farms on which the quality of fertility is doubtful.
D000818:Animals; D005260:Female; D005298:Fertility; D011247:Pregnancy; D011258:Pregnancy Tests / Q000379:methods / Q000662:veterinary*; D013552:Swine; D014463:Ultrasonography
Omtrent het nut van routinematig drachtigheidsonderzoek van zeugen met behulp van ultrasone apparatuur.