Longevity of captive mammals in Philadelphia Zoo
1968; Wiley; Volume: 8; Issue: 1 Linguagem: Inglês
10.1111/j.1748-1090.1968.tb00478.x
ISSN1748-1090
AutoresRobert L. Snyder, Susan C. Moore,
Tópico(s)Animal Behavior and Welfare Studies
ResumoAbstract Data on longevity of captive mammals were compiled from post‐mortem records filed in the Penrose Research Laboratory of the Zoological Society of Philadelphia. Maximum exhibition periods were reported for 42 families of mammals exhibited between 1901 and 1964. The longest exhibition period was 593 months for an echidna of the family Tachyglossidae. Mean exhibition periods and mortality patterns for 20 families were presented for two periods, 1901‐34 and 1935‐64. Average duration of life on exhibition increased considerably following changes in diets in 1935, with 12 families showing significant increases in longevity. The effects of larger cages, improved facilities, and the use of antibiotics and vaccines representing further changes in the environment during the period from 1935‐64, were also analysed in relation to increased longevity.
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