title: Birth traits of pure Holstein calves versus Montbeliarde-sired crossbred calves.
abstract: Pure Holstein calves and Montbeliarde-sired crossbred calves from multiparous Holstein dams were compared for gestation length, calf weight at birth, calving difficulty, and stillbirth in 2 research herds of the University of Minnesota. The Montbeliarde-sired calves from multiparous Holstein dams had significantly longer gestation lengths (283.2 d) than Holstein-sired calves from Holstein dams (278.4 d), and Montbeliarde-sired calves from multiparous Holstein dams had significantly greater calf weight at birth (48.3kg) compared with Holstein-sired calves from Holstein dams (43.3kg). However, calves sired by Montbeliarde bulls were not significantly different from calves sired by Holstein bulls for calving difficulty and stillbirth. In addition, Jersey x Holstein crossbred cows mated to Montbeliarde artificial insemination (AI) bulls were compared with pure Holstein cows mated to Holstein AI bulls for gestation length, calf weight at birth, calving difficulty, and stillbirth at their first 3 calvings. Gestation length was significantly longer for Jersey x Holstein cows bred to Montbeliarde bulls than for pure Holstein cows bred to Holstein bulls at first calving (280.3 versus 277.7 d) and second and third calving (282.2 versus 278.6 d); however, Jeresy x Holstein cows bred to Montbeliarde AI bulls were not significantly different from pure Holstein cows bred to Holstein AI bulls for calf weight at birth, calving difficulty, and stillbirth at the first 3 calvings.
authors.affiliation: Department of Animal Science, University of Minnesota, St. Paul, Minnesota 55108, USA. hein0106@umn.edu
authors.forename: B J
authors.initials: BJ
authors.lastname: Heins
authors.forename: L B
authors.initials: LB
authors.lastname: Hansen
authors.forename: A R
authors.initials: AR
authors.lastname: Hazel
authors.forename: A J
authors.initials: AJ
authors.lastname: Seykora
authors.forename: D G
authors.initials: DG
authors.lastname: Johnson
authors.forename: J G
authors.initials: JG
authors.lastname: Linn
mesh_terms: D000818:Animals; D001724:Birth Weight / Q000502:physiology*; D001947:Breeding; D002417:Cattle / Q000502:physiology*; D002418:Cattle Diseases / Q000453:epidemiology; D005260:Female; D006824:Hybridization, Genetic; D008297:Male; D007744:Obstetric Labor Complications / Q000453:epidemiology / Q000662:veterinary*; D011247:Pregnancy; D011897:Random Allocation; D050497:Stillbirth / Q000453:epidemiology / Q000662:veterinary*