Genetic and environmental factors affecting lamb survival at birth and through to weaning

By C. Morris, S. Hickey, J. N. Clarke. 2000

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The effect of ewe maternal behaviour score on lamb and litter survival (2005, background): “However, recent estimates of the genetic components of lamb survival indicate limited genetic variation (Petersson and Danell, 1985; Hall et al., 1995; LopezVillalobos and Garrick, 1999; Morris et al., 2000; Fadilli and Leroy, 2001; Cloete et al., 2002), and that lamb survival is controlled mainly b”
A review of genetic parameter estimates for wool, growth, meat and reproduction traits in sheep (2005, background): “The exception was lamb survival (Table 3) in which the maternal heritability was generally as large or larger than the direct heritability (Hall et al., 1995; Lopez-Villalobos and Garrick, 1999; Matos et al., 2000; Morris et al., 2000; Southey et al., 2001).”