藤茶粉对杂交鲟生长性能和肌肉品质及肠道菌群的影响
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贵州省科技计划项目(黔科合支撑[2019]2348号、黔科合支撑[2019]2383号);贵州省重点实验室项目(黔科合平台人才[2020]2003号);贵州省高层次创新人才培养项目(2018–(2016)–022);贵州省普通高等学校工程中心建设项目(黔教合KY[2012]028号)


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    摘要:

    将180尾、体质量为(32.81±1.28) g的杂交鲟幼鱼随机均分为4组,分别投喂藤茶粉添加水平为0.00%(A0),0.50%(A1)、1.00%(A2)、2.00%(A3)的试验饲料,试验共进行60 d,每组3个重复,每个重复15尾鱼,试验结束后,检测杂交鲟的生长性能、血清生化指标和免疫指标、肠道形态指标、消化酶活性和微生物多样性、肌肉组分含量和氨基酸组成。结果表明:与A0相比,A1和A2杂交鲟的终质量、增重率、特定生长率和成活率均无显著变化,A3的终质量、增重率和特定生长率均显著降低;A1的总胆固醇、甘油三酯、白蛋白含量及谷草转氨酶活性均显著升高,A2和A3的谷草转氨酶活性均显著降低;各试验组的血清碱性磷酸酶、过氧化氢酶、谷胱甘肽过氧化物酶、超氧化物歧化酶活性和总抗氧化能力及肠道蛋白酶、淀粉酶活性均显著升高,A2的脂肪酶活性显著升高,A1的脂肪酶活性显著降低;A1和A2的肠道皱襞高度显著升高;A2的肠道菌群的物种多样性增加;各试验组的肌肉常规成分均无显著变化;A2和A3肌肉的必需氨基酸占总氨基酸的比值显著升高。可见,本研究条件下,适量添加藤茶粉可提高杂交鲟的免疫水平而不影响其生长,添加量以1.00%为宜。

    Abstract:

    A total of 180 juvenile hybrid sturgeon with body mass of (32.81±1.28) g were randomly divided into 4 groups and fed Ampelopsis grossedentata powder supplemented with 0.00%(A0), 0.50%(A1), 1.00%(A2) and 2.00%(A3) diets for 60 days with 3 replicates in each group and 15 fish in each replicate. The growth performance, serum biochemical and immune indexes, intestinal morphology indexes, digestive enzyme activity and microbial diversity, muscle component content and amino acid composition of hybrid sturgeon were collected respectively. The results showed that compared with A0, the final mass, mass gain rate, specific growth rate and survival rate of A1 and A2 hybrid sturgeon had no significant changes, while the final mass, mass gain rate and specific growth rate of A3 were significantly decreased. The contents of total cholesterol, triglyceride, albumin and activity of glutamic oxaloacetic transaminase(AST) of A1 were significantly increased, while the AST activities of A2 and A3 were significantly decreased. Serum alkaline phosphatase, catalase, glutathione peroxidase and superoxide dismutase activities, total antioxidant capacity and intestinal protease and amylase activities were significantly increased in experimental groups, while the lipase activity of A2 was significantly increased and that of A1 was significantly decreased. The intestinal fold height of A1 and A2 were significantly increased. The species diversity of intestinal flora in A2 was increased. There were no significant changes in muscle routine components in all experimental groups. The ratio of essential amino acids to total amino acids in A2 and A3 muscles were significantly increased. In conclusion, under the conditions of this study, appropriate addition of A. grossedentata powder could improve the immune level of hybrid sturgeon without affecting its growth indexes, and the optimal addition amount is 1.00%.

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印双红,罗雪莲,马兴右,刘阳,张孟琴,易彩霞,毛宏,李寅翠,张俊波.藤茶粉对杂交鲟生长性能和肌肉品质及肠道菌群的影响[J].湖南农业大学学报:自然科学版,2023,49(5):.

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  • 在线发布日期: 2023-11-10
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