养殖条件下3种锦蛇甲状腺相关激素和生长的比较研究
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沈阳师范大学,沈阳师范大学,沈阳师范大学,沈阳思纳可蛇类养殖有限公司,沈阳师范大学

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国家林业局珍稀濒危物种野外救护与人工繁育项目


Comparative Studies of the Correlation between Thyroid-Related Hormones and Growth in Three Species of Ratsnake at Captivity
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Shenyang Normal University,Shenyang Normal University,Shenyang Normal University,Shenyang SiNaKe Snake Breeding Co., Ltd.,Shenyang Normal University

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    摘要:

    为深入了解人工饲养条件下棕黑锦蛇(Elaphe schrenckii)、赤峰锦蛇(E. anomala)和王锦蛇(E. carinata)生长情况及与甲状腺相关激素的关系,本研究在蛇类非冬眠时期的5月、7月和9月,以尾静脉采血获得3种锦蛇的血清,检测其血清中促甲状腺激素释放激素(TRH)、促甲状腺激素(TSH)和甲状腺素(T4)含量,并记录观察期间3种蛇的体重和体长的增长以及进食量。检测结果,王锦蛇的促甲状腺激素释放激素(TRH)、促甲状腺激素(TSH)和甲状腺素(T4)含量均低于其他2种锦蛇,3种锦蛇促甲状腺激素释放激素(TRH)、促甲状腺激素(TSH)含量最高值均出现在7月份;除了赤峰锦蛇外,棕黑锦蛇和王锦蛇的甲状腺素(T4)含量最高值也出现在7月份,与蛇类快速生长的时间相一致。另外,棕黑锦蛇甲状腺素(T4)含量与进食量的相关系数高于赤峰锦蛇和王锦蛇,而其饲料的转化率也高于后两者,其间存在的关系还需要深入研究。由上述结果可以看出,3种锦蛇促甲状腺激素释放激素(TRH)、促甲状腺激素(TSH)和甲状腺素(T4)含量和变化趋势有着明显的差别,且血清甲状腺素(T4)含量与蛇的进食量、生长和饲料转化率之间有密切的关系。

    Abstract:

    In order to study the relationship between growth situation and thyroid-related hormones in Amur rat-snake (Elaphe schrenckii), Southern Amur rat-snake (E. anomala) and Keeled rat-snake (E. carinata) at captivity, we obtained the serum of these three species by drawing blood from the tail vein in the non-hibernation period of snakes in May, July and September, detected the thyrotropin-releasing hormone(TRH), thyroid-stimulating hormone (TSH), thyroid hormone (T4) levels and recorded their body weight, length and food intake. The data were analyzed by covariance analysis taking body weight as a covariate for multiple comparisons between groups with LSD method (ANCOVA) and Pearson correlation coefficient with SPSS STATISTICS, Version 17.0. Results were presented as mean ± standard deviation (SD) and statistical significance was declared at P < 0.05. The results showed that TRH, TSH and T4 peaks of all three species appeared in July (except for the thyroid hormone of E. anomala) (Table 2). Analysis of covariance revealed that TRH, TSH and T4 contents in three sampling time points were not significantly different in all three species (P > 0.05). Multiple comparisons between groups revealed that there existed difference in TRH, TSH and T4 contents at different sampling time points in three species (P < 0.05). Analysis of covariance revealed the difference in TRH, TSH and T4 contents of three species in the same sampling point was not significant (P > 0.05), but multiple comparisons between groups revealed that the TRH, TSH and T4 contents of E.carinata were significantly lower than those of E. schrenckii and E. anomala (except for the TRH in May) (P < 0.05); the difference between any two species of ratsnakes in TRH, TSH and T4 contents in Sep was significant (P < 0.05, Table 2). In addition, the correlation coefficient between E. schrenckii′s T4 content and food intake was 0.946, higher than in E. anomala and E. carinata (Table 3) and the feed conversion rate was 13.16% in E. schrenckii, higher than in E. anomala and E. carinata (Table 1). Summary: There is obvious difference in TRH, TSH and T4 contents in different snakes in the non-hibernation period, and there is a close correlation between T4 content, growth, food intake and feed conversion rate in snakes.

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张冰,李丕鹏,陆宇燕,薛伯强,陶思源.2015.养殖条件下3种锦蛇甲状腺相关激素和生长的比较研究.动物学杂志,50(5):758-764.

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  • 收稿日期:2015-02-07
  • 最后修改日期:2015-09-09
  • 录用日期:2015-09-07
  • 在线发布日期: 2015-09-16
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