| With the rapid development of artificial cultivation of giant salamanders, various models of cultivation emerged. Aiming at discussing how the present three types of cultivation models, namely, industrial cultivation; bionic cultivation and ecological cultivation affect the growth of giant salamanders; further enhancing the techonology of artificial cultivation and survival rate as well as providing experimental foundation for the artifical freeing of giant salamanders, the author did two experiments on how various cultivation models affect the growth of giant salamanders, the growth of sex gland and the effects of reproduction during the period from March 2006 to September 2008.The experiment was divided into three groups with each cultivation model as one group. There were ten 5-year giant salamanders (2001) with the ratio of one to one between females and males; as well as ten infancy salamanders (2004) in each group. The infancy salamanders were observed for the growth rate and their survival rate while the five-year giant salamanders for the effects of reproduction on the process of growth. Artifical repoduction and hatching were adopted in industrial cultivation; half artificial reproduction in bionic cultivation, that is, giant salamanders naturally completed the process of egg laying, fecundation, hatching and so on themselves after artificial inducing oestrus. However, the giant salamanders were required to complete the whole process of reproduction themselves in the group of ecological cultivation.The result exemplified industrial cultivation suits the cultivation of giant salamanders for commercial purpose most; while bionic cultivation for the popularization of cultivation model because it doubled the rate of emergence compared with that of industrial culitivation model. In addition, ecological cultivation provided experimental data and guiding influences on the artificial freeing of giant salamanders. |
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