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Article     |     Next >>   Contents Vol 20(5)

The Demography of Feral Pigs (Sus Scrofa) in Kosciusko National Park, New South Wales.

G Saunders

Wildlife Research 20(5) 559 - 569
Published: 1993

Abstract

The demography of a sub-alpine population of feral pigs was examined at Kosciusko National Park in south-eastern New South Wales. Reproductive data and age structures indicated a seasonal pattern of breeding, most births occurring in summer and autumn. It is proposed that a decreasing availability of high protein food in the autumn and winter months caused reduced rates of conception. Sows produced 0.84 litters per year with postnatal mortality as high as 85%. The population appeared relatively stable at a density of 1.6 pigs kg-2. Hunting, although illegal in a national park, removed 4.4-15.4% of pigs each year. The overall health and body condition of pigs was good, with no evidence of heavy parasitic burdens or disease. Age-specific body weight and body length in this study were greater than those reported for pigs in semi-arid wester New South Wales.



Full text doi:10.1071/WR9930559

© CSIRO 1993

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