Literaturdatenbank
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Diez, M., Vanstrazeele, B., Justet, D., Detilleux, J., Dortu, P., & Grolet, L., et al. , Effects of different levels of energy allowances and of hibernation on growth in hatchling testudo hermanni boettgeri (mojsisovic, 1889). Unpublished paper presented at Zoo Animal Nutrition IV.
Added by: Sarina Wunderlich (30 Jun 2012 22:00:47 UTC) |
| Resource type: Conference Paper BibTeX citation key: Diez2009 View all bibliographic details  |
Categories: General Keywords: Ernährung = nutrition, Physiologie = physiology, Schildkröten = turtles + tortoises, Testudinidae, Testudo, Testudo hermanni Creators: Detilleux, Diez, Dortu, Grolet, Istasse, Justet, Remy, Vanstrazeele Collection: Zoo Animal Nutrition IV |
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| Abstract |
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Testduinidae Testudo hermanni Cet article présente des données de croissance de Testudo nouveaux nés dont les apports alimentaires et l'hibernation ont été contrôlés. Captive breeding of Testudo hermanni is often associated with rapid growth and carapace deformation. The objective was to determine the minimum level of energy allowing growth and to test the effects of different levels of energy allowances and of hibernation on growth during the first year of life. Forty hatchling Testudo hermanni boettgeri were divided into 5 groups of 8 animals of similar body weight (BW) (mean ± SD, 12.3 ± 1.3 g). The groups differed in terms of their hibernation status: either hibernating (H+, groups A, B, E) or not (H-, groups C, D) and in terms of the energy allowances: either low Energy I (E-I, groups B, D) or high Energy (E-II, groups A, C); group E was fed ad libitum. The starting point for determining energy allowances was the equation: Standard Metabolic Rate (SMR; kcal/day) = 32 (BW0.75), BW in kg (Donoghue and Langenberg 1996). Two levels of energy allowance – 0.15 and 0.30 SMR – were offered in groups A to D; food was given in the form of fresh plants. Repeated measures of BW were analyzed using a mixed linear model. A SMR of 0.15 allowed weight gain. During the first 5 months of life, the 5 groups grew at the same rate while receiving different energy allowances, corresponding to 2.8, 5.6 and > 5.6 % of BW as fresh food. After 5 months, the energy allowance and the hibernation status had an effect on weight gain along with BW at birth and time. Bone density was higher in hibernating tortoises, in comparison with non hibernating ones. Energy requirements for growth appear very low. Hibernation and energy allowances strongly influence growth rate in hatchling Testudo, but only after 5 months of life.
Added by: Sarina Wunderlich |