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AnAge entry for Ovis canadensis

Classification (HAGRID: 02328)
TaxonomyKingdom: Animalia
    Phylum: Chordata
        Class: Mammalia (Taxon entry)
            Order: Artiodactyla
                Family: Bovidae
                    Genus: Ovis
SpeciesOvis canadensis
Common nameBighorn sheep

Lifespan, ageing, and relevant traits

Maximum longevity20.6 years (captivity)
Sourceref. 671
Sample sizemedium
Data qualityacceptable
Observations

Young females have an over 90% survival in the wild, though an increased mortality with age has been reported for both males and females after about 8 years of age [0800]. It has been reported that these animals live up to 24 years in captivity [0573], which could be overestimated. Record longevity in captivity is 20.6 years [0671].

Life history traits (averages)

Female sexual maturity707 days
Male sexual maturity749 days
Gestation180 days
Weaning152 days
Litter size1 (viviparous)
Litters per year1
Inter-litter interval365 days
Weight at birth4,400 g
Weight at weaning28,000 g
Adult weight70,275 g
Postnatal growth rate0.0031 days-1 (from Gompertz function)
Maximum longevity residual76 %

Metabolism

Typical body temperature311ºK or 38.0ºC or 100.4ºF
Basal metabolic rate114.6740 W
Body mass67030.8 g
Metabolic rate per body mass0.001711 W/g

References
[0671] Richard Weigl (2005), Longevity of Mammals in Captivity; from the Living Collections of the World
[0036] Savage et al. (2004), The predominance of quarter-power scaling in biology
[0420] White and Seymour (2003), Mammalian basal metabolic rate is proportional to body mass2/3, PubMed
[0800] Loison et al. (1999), Age-specific survival in five populations of ungulates: evidence of senescence
[0441] William Burt et al. (1998), A Field Guide to Mammals
[0455] Virginia Hayssen et al. (1993), Asdell's Patterns of Mammalian Reproduction: A Compendium of Species-Specific Data
[0573] David Macdonald (1985), The Encyclopedia of Mammals
[0731] Zullinger et al. (1984), Fitting sigmoid equations to mammalian growth curves

External resources

Integrated Taxonomic Information SystemITIS 180711
Animal Diversity WebADW account
Encyclopedia of LifeSearch EOL
Genome ProjectSearch NCBI
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