| 摘要: |
| 水生动物往往会通过调整自身生理生化特征而形成各自固有的越冬生存适应对策,因此,深入探究越冬对具有冬眠习性的目标水产养殖动物机体生理状况的影响过程与机制,对指导其安全养殖具重要参考价值。以池塘专养模式下2+龄中华鳖(Trionyx sinensis)同生群个体为研究对象,从机体形态、血清生化、脏器相关功能酶活力和肌肉与裙边物性等四个维度开展了中华鳖越冬前后生理生化特征的差异研究,以进一步了解越冬对中华鳖生理生化的影响特征。结果表明:(1)越冬期间实验中华鳖总体上呈现较明显的生长态势,所测30项体尺性状和12项质量性状测定值间的差异相似性分别为46.7%和8.3%;(2)所测16项血清生化指标中,越冬后显著降低的为TG等5项(P<0.05),显著增加的为TP等4项(P<0.05),无显著差异的为GLB等7项(P>0.05);(3)所测8项脏器酶学指标中,越冬后酶活力显著下降的为肝脏CAT、POD和脂肪酶(P<0.05),显著升高的为胃蛋白酶等相关酶指标(P<0.05);(4)所测7项物性指标中,越冬后裙边弹性和咀嚼性均显著增加(P<0.05),其余为下降或无显著差异(P>0.05)。表明越冬为引起肝脏功能发生正常切换的重要时期,但不会引起心肝功能产生实质性改变。研究结果可为中华鳖越冬生理生态学研究和池养中华鳖越冬管理技术体系构建提供基础资料。 |
| 关键词: 中华鳖(Trionyx sinensis) 越冬 形态特征 血清生化 消化酶 抗氧化酶 ATP酶 物性 |
| DOI：10.11693/hyhz20210900231 |
| 分类号:S966.5; Q956 |
| 基金项目:国家星火计划项目,2012GA701053号;中央财政重大农业技术推广项目,YY2017003号;宁波市科技局农业创新创业项目,2014C91026号。 |
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| EFFECTS OF OVERWINTERING ON BODY MORPHOLOGY, SERUM BIOCHEMISTRY, ACTIVITY OF FUNCTIONAL ENZYMES RELATED TO VISCERA, AND PHYSICAL PROPERTIES OF MUSCLE AND SKIRT OF TRIONYX SINENSIS IN POND CULTURE MODE |
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LI You-Zhi1, MU En-Xuan1, SHENTU Yan2, ZHU Wei-Dong2, ZHAO Bei-Bei1, WANG Zhi-Zheng1
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1.School of Fisheries of Zhejiang Ocean University, Zhoushan 316022, China;2.Yuyao Aquatic Technology extension Center, Yuyao 315400, China
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| Abstract: |
| Aquatic animals have gained their own strategies for overwintering by adjusting their physiological and biochemical characteristics. Therefore, to study the mechanism of overwintering impact on physiological status of aquatic animals would provide important guide for safe breeding. Pond-cultured two-year-old soft-shelled turtle Trionyx sinensis was studied and the differences before and after wintering were systematically studied in 4 aspects, i.e., the body shape, serum biochemistry, the enzyme activity of viscera-related function, and the physical properties of muscle and skirt. The results show that: (1) during overwintering, T. sinensis grew obviously in general. The differential similarity of the measured values of 30 body-size traits and 12 quality traits were 46.7% and 8.3%, respectively; (2) among the 16 serum biochemical indexes, five (including TG etc.) decreased significantly after overwintering (P<0.05), four (including TP etc.) increased significantly (P<0.05), and no significant difference was found in the rest seven indexes (including GLB etc.) (P>0.05); (3) among the eight indexes of visceral enzymology, the enzyme activities of CAT, POD and lipase in liver decreased significantly after overwintering (P<0.05), and the enzyme activities of pepsin etc. of liver increased significantly (P<0.05); (4) of the seven physical properties indexes measured, the hemline elasticity and chewiness increased significantly (P<0.05), the others decreased significantly or had no significant difference (P>0.05). Overwintering caused corresponding change in normal liver functioning, but did not affect the normal functioning of heart and liver. The study promoted our understanding of overwintering ecophysiology with a real-data support to the management during T. sinensis overwriting. |
| Key words: Trionyx sinensis overwinter morphological characteristics serum biochemistry digestive enzymes antioxidant enzyme ATPase physical property |
