title: Breed differences in biparietal diameters of second trimester Toggenbubrg, Nubian and Angora goat fetuses.
abstract: Seven purebred Toggenburg fetuses in four does, six purebred Nubian fetuses in four does, and eight Angora fetuses in six does were repeatedly measured using transabdominal real-time ultrasound with a 5 MH(z) linear-array transducer from 40 d to 100 d gestational age (GA) and their biparietal diameters (BPD) were determined. For Toggenburg goats the GA = 27.9 + 1.64 BPD; for Nubian goats the GA = 26.8 + 1.74 BPD; for Angora goats the GA = 28.6 + 1.77 BPD. The breed differences in GA for equal BPD are insignificant at the beginning of the second trimester but are +3 d for Nubian and +6 d for Angora fetuses by the end of the second trimester.
authors.affiliation: Department of Veterinary Clinical Sciences College of Veterinary Medicine The Ohio State University Columbus, OH 43210 USA.
authors.forename: G K
authors.initials: GK
authors.lastname: Haibel
authors.forename: N R
authors.initials: NR
authors.lastname: Perkins
authors.forename: G M
authors.initials: GM
authors.lastname: Lidl