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Compensatory growth, plasma hormones and metabolites in juvenile Siberian sturgeon ( Acipenser baerii , Brandt 1869) subjected to fasting and re‐feeding
Aquaculture Nutrition ( IF 3.0 ) Pub Date : 2019-10-25 , DOI: 10.1111/anu.13002
Ghasem Ashouri 1, 2 , Nasrollah Mahboobi‐Soofiani 1 , Seyed Hossein Hoseinifar 3 , Mansour Torfi‐Mozanzadeh 4 , Amir Mani 1 , Arash Khosravi 5 , Oliana Carnevali 2
Affiliation  

A 7‐week study was conducted to investigate the effect of different fasting and re‐feeding regimes on compensatory growth and some physiological parameters of juvenile Siberian sturgeon (Acipenser baerii). Fish (46.5 ± 0.5 g) were fed on a diet (containing 450 g/kg crude protein and 20 MJ/kg digestible energy) according to four feeding regimes in triplicate including: control group (C, fed everyday), W1 (2 weeks of feeding followed by 1 week of fasting and 4 weeks of re‐feeding), W2 (1 week of feeding followed by 2 weeks of fasting and 4 weeks of re‐feeding) and W3 (3 weeks of fasting followed by 4 weeks of re‐feeding). The fasted groups including W1 (119.6 ± 2.1 g), W2 (118.0 ± 1.7 g) and W3 (108.5 ± 4.8) significantly lost their weights during fasting phase and did not attain the final weight of the C (137.3 ± 1.7 g) after re‐feeding phase. The re‐feeding phase increased the specific growth rate in the fasted groups compared to the C (p < .05). After the fasting phase, concentrations of T₃, T₄, glucose, total protein and triglyceride in plasma of fasted groups were decreased, but levels of total cholesterol, aspartate aminotransferase, alkaline phosphatase and lactate dehydrogenase increased compared to the C. After re‐feeding phase, except for glucose level, all mentioned metabolites were restored in the plasma of W1 group, but total protein level and aspartate aminotransferase concentrations in plasma were not restored in W2 and W3 groups. Overall, our finding demonstrated 4 weeks of re‐feeding was too short to induce full compensatory growth in A. baerii juveniles.

中文翻译:

禁食和再喂养的幼年西伯利亚鲟(Acipenser baerii,Brandt 1869)的代偿性生长、血浆激素和代谢物

进行了一项为期 7 周的研究,以研究不同禁食和再喂养方式对幼年西伯利亚鲟 (Acipenser baerii) 代偿性生长和一些生理参数的影响。鱼 (46.5 ± 0.5 g) 的饲料(含 450 g/kg 粗蛋白和 20 MJ/kg 可消化能)根据四种喂养方式一式三份喂养,包括:对照组(C,每天喂食),W1(2 周)喂食后禁食 1 周再喂食 4 周),第 2 周(喂食 1 周后禁食 2 周再喂食 4 周)和第 3 周(禁食 3 周后再喂食 4 周) ——喂食)。包括 W1 (119.6 ± 2.1 g)、W2 (118.0 ± 1.7 g) 和 W3 (108.5 ± 4.8) 在内的禁食组在禁食阶段体重明显减轻,并且没有达到 C (137.3 ± 1.7 g) 的最终重量。再喂养阶段。与 C 相比,再喂养阶段增加了禁食组的比生长率 (p < .05)。禁食期后,禁食组血浆中 T₃、T₄、葡萄糖、总蛋白和甘油三酯的浓度降低,但总胆固醇、天冬氨酸转氨酶、碱性磷酸酶和乳酸脱氢酶的水平与 C 相比升高。除葡萄糖水平外,W1组血浆中所有提及的代谢物均恢复,但W2和W3组血浆中总蛋白水平和天冬氨酸转氨酶浓度未恢复。总体而言,我们的发现表明 4 周的重新喂养时间太短,无法诱导 A. baerii 幼鱼的完全补偿生长。禁食期后,禁食组血浆中 T₃、T₄、葡萄糖、总蛋白和甘油三酯的浓度降低,但总胆固醇、天冬氨酸转氨酶、碱性磷酸酶和乳酸脱氢酶的水平与 C 相比升高。除葡萄糖水平外,W1组血浆中所有提及的代谢物均恢复,但W2和W3组血浆中总蛋白水平和天冬氨酸转氨酶浓度未恢复。总体而言,我们的发现表明 4 周的重新喂养时间太短,无法诱导 A. baerii 幼鱼的完全补偿生长。禁食期后,禁食组血浆中 T₃、T₄、葡萄糖、总蛋白和甘油三酯的浓度降低,但总胆固醇、天冬氨酸转氨酶、碱性磷酸酶和乳酸脱氢酶的水平与 C 相比升高。除葡萄糖水平外,W1组血浆中所有提及的代谢物均恢复,但W2和W3组血浆中总蛋白水平和天冬氨酸转氨酶浓度未恢复。总体而言,我们的发现表明 4 周的重新喂养时间太短,无法诱导 A. baerii 幼鱼的完全补偿生长。碱性磷酸酶和乳酸脱氢酶较 C 增加。重新喂养期后,除葡萄糖水平外,W1 组血浆中所有提到的代谢物均恢复,但血浆中总蛋白水平和天冬氨酸转氨酶浓度在 W2 和W3组。总体而言,我们的发现表明 4 周的重新喂养时间太短,无法诱导 A. baerii 幼鱼的完全补偿生长。碱性磷酸酶和乳酸脱氢酶较 C 增加。重新喂养期后,除葡萄糖水平外,W1 组血浆中所有提到的代谢物均恢复,但血浆中总蛋白水平和天冬氨酸转氨酶浓度在 W2 和W3组。总体而言,我们的发现表明 4 周的重新喂养时间太短,无法诱导 A. baerii 幼鱼的完全补偿生长。
更新日期:2019-10-25
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