Table 2. List of fixed and random effects fitted in the models in addition to the effects of inbreeding and density.

		Fixed effects						Random effects
Trait	Sex (male or female)	Litter size (0 or 1)	Maternal age (years, quadratic)	Age (years, quadratic)	Age at capture	Birth day	Adjusted birth weight (kg)	Year of birth	Sheep year	Sheep ID	Maternal ID	Additive genetic effect	Maternal genetic effect
Birth weight	x	x	x		Days (factor)	x		x				x	x
Hindleg	x	x	x		Days	x		x				x	x
Weight	x	x	x		Days	x		x				x	x
First winter survival		x	x	x			x	x			x
Annual survival				x				x	x		x
Annual breeding success				x				x	x	x	x

Abbreviation: ID, inbreeding depression.