Abstract
Effects of divergent selection for leg weakness on muscle and bone characteristics in Duroc swine
Highlights
Leg-weakness disorders are a serious and widespread problem in the swine industry
Factors contributing to leg weakness may include nutritional imbalances (Nielsen, 1973; Grondalen, 1974a, d; Reiland et al, 1978, van der Wal et al, 1982), skeletal lesions (Grondalen, 1974 a, c; Goedegebuure et al, 1980 a, b; van der Valk et al, 1980; Wilson, 1980; van der Wal et al, 1987), microbial diseases (Christensen, 1953; Duthie and Lancaster, 19G4; Grondalen, 1974a; Lawrisuk et al, 1987), and trauma (Nakano and Aherne, 1988)
It has been demonstrated repeatedly that heredity plays a significant role in the development and appearance of porcine leg weakness (Reiland et al, 1978; Bereskin, 1979; Drewry, 1979; Wilson, 1980; Webb et al, 1983; Draper et al, 1988; Rothschild and Christian, 1988)
Summary
Leg-weakness disorders are a serious and widespread problem in the swine industry. It has been demonstrated repeatedly that heredity plays a significant role in the development and appearance of porcine leg weakness (Reiland et al, 1978; Bereskin, 1979; Drewry, 1979; Wilson, 1980; Webb et al, 1983; Draper et al, 1988; Rothschild and Christian, 1988). Three lines of Duroc swine that differ in their degree of leg weakness were developed from a 5-generation divergent-selection experiment (Rothschild and Christian, 1988)
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