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Abstract

Data on 23 litters from Large White (LW) × (LW × Landrace) gilts and 33 litters from 11 LW × Landrace sows in Spain were analysed. Females were mated with a Dutch Landrace (DL) or a Piétrain × Duroc boar. There were significant differences between gilts and sows in average birth weight of female...

Author(s)
Daza, A.; Evangelista, J. N. B.; Gutiérrez Barquín, M. G.
Citation
ITEA Producción Animal, 1997, 93, 2, pp 119-129
Abstract

Data were obtained over a 10-yr period for 3 Polish Lowland flocks comprising 10 613 ewes and 14 277 lambs. Lambing rate was 134.5. The number of lambs dying before weaning was 1776. Type of birth of the ewe had no significant effect on preweaning survival of the offspring on 2 farms, but had a...

Author(s)
Lipecka, C.; Szymanowska, A.; Pięta, M.
Citation
Roczniki Nauk Rolniczych. Seria B, Zootechnicza, 1991, 106, 1-2, pp 121-126