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Direct genetic and additive maternal effects on swine litter size and weight in a tropical environment

Research Notes
C.O.N. Ikeobi
Department of Animal Breeding and Genetics, University of Agriculture, Abeokuta, Nigeria
L.O. Ngere
Department of Animal Science, University of Ibadan, Ibadan, Nigeria
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Keywords

Direct effects
Additive maternal effects
Litter size
Litter weight

How to Cite

Direct genetic and additive maternal effects on swine litter size and weight in a tropical environment. (1994). Tropical Agriculture, 71(1). https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/2666
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Abstract

Litter records (totalling 1323) of Large White (LW) and Landrace (LR) pigs and their F1 crosses were analysed to evaluate the direct genetic and additive maternal effects on pre-weaning litter size and weight. Direct genetic effects were important for most litter traits studied. Additive maternal differences were observed for litter weight at 3 weeks of age favouring the crossbreds with LR dams. Direct heterosis effects for litter size and weight at birth were not significant.
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