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李汉东, 李旭巧, 吉红, 孙健, 胡泽超, 刘莎. 含棉籽浓缩蛋白饲料添加酵母硒对草鱼生长性能和肌肉品质的影响[J]. 水生生物学报, 2023, 47(9): 1408-1415. DOI: 10.7541/2022.2022.0361
引用本文: 李汉东, 李旭巧, 吉红, 孙健, 胡泽超, 刘莎. 含棉籽浓缩蛋白饲料添加酵母硒对草鱼生长性能和肌肉品质的影响[J]. 水生生物学报, 2023, 47(9): 1408-1415. DOI: 10.7541/2022.2022.0361
LI Han-Dong, LI Xu-Qiao, JI Hong, SUN Jian, HU Ze-Chao, LIU Sha. YEAST SELENIUM ADDED TO COTTONSEED PROTEIN CONCENTRATE DIET ON GROWTH PERFORMANCE AND FLESH QUALITY OF GRASS CARP (CTENOPHARYNGODON IDELLA)[J]. ACTA HYDROBIOLOGICA SINICA, 2023, 47(9): 1408-1415. DOI: 10.7541/2022.2022.0361
Citation: LI Han-Dong, LI Xu-Qiao, JI Hong, SUN Jian, HU Ze-Chao, LIU Sha. YEAST SELENIUM ADDED TO COTTONSEED PROTEIN CONCENTRATE DIET ON GROWTH PERFORMANCE AND FLESH QUALITY OF GRASS CARP (CTENOPHARYNGODON IDELLA)[J]. ACTA HYDROBIOLOGICA SINICA, 2023, 47(9): 1408-1415. DOI: 10.7541/2022.2022.0361

含棉籽浓缩蛋白饲料添加酵母硒对草鱼生长性能和肌肉品质的影响

YEAST SELENIUM ADDED TO COTTONSEED PROTEIN CONCENTRATE DIET ON GROWTH PERFORMANCE AND FLESH QUALITY OF GRASS CARP (CTENOPHARYNGODON IDELLA)

  • 摘要: 研究旨在探讨含棉籽浓缩蛋白(Cottonseed protein concentrate)饲料添加酵母硒(Yeast selenium, YS)对草鱼(Ctenopharyngodon idella)生长性能和肌肉品质的影响。设计了4种等氮等脂实验饲料, 分别是在含棉籽浓缩蛋白饲料中添加0 (YS0)、0.3 (YS3)、0.6 (YS6)和0.9 mg/kg (YS9)酵母硒; 实验选取初始体重为(309.74±0.36) g的草鱼240尾, 随机分成4组, 分别投喂4种实验饲料, 在池塘网箱中开展为期54d的养殖实验。结果显示: (1)在生长性能方面, 与YS0组相比, YS3和YS6组草鱼在生长性能上无显著性差异(P>0.05), YS9组草鱼的终末体重、增重率和特定生长率显著降低(P<0.05)。(2)在肌肉品质方面, YS3组草鱼肌肉的粗蛋白含量、硒含量、羟脯氨酸含量和硬度显著高于YS0组(P<0.05), 肌肉纤维直径显著低于YS0组(P<0.05)。研究表明, 在含棉籽浓缩蛋白的饲料中添加适量酵母硒(饲料硒含量为0.6 mg/kg), 对草鱼的生长性能无影响, 且可通过提高草鱼肌肉粗蛋白、硒、羟脯氨酸含量和硬度来提升草鱼肌肉品质, 但过量添加酵母硒会降低草鱼的生长性能。

     

    Abstract: In aquaculture, selenium has been shown to improve the immune and antioxidant capacity of aquatic animals. As a kind of new style protein resource, cottonseed protein concentrate plays a crucial role in aquaculture industry, however, the antinutritional factors (such as gossypol) seriously hindered the application of cottonseed protein concentrate in aquatic feed. Therefore, the purpose of this study was to investigate the effects of adding yeast selenium (YS) to the diet that containing cottonseed protein concentrate on the growth performance and muscle quality of grass carp (Ctenopharyngodon idella). Four isonitrogenous and isolipidic diets were designed: 0, 0.3, 0.6 and 0.9 mg/kg YS were added to the diet containing cottonseed protein concentrate, and corresponding named YS0, YS3, YS6 and YS9, respectively. A total of 240 healthy grass carp with similar size (initial weight: 309.74±0.36 g) were randomly distributed into 12 net cages in the pond. Each of the experimental diets was randomly fed triplicate cages for 56-day three times per day (9:00, 13:00 and 17:00). The results showed that: (1) In terms of growth performance, compared with YS0 group, there was no significant difference in growth performance between YS3 and YS6 groups (P>0.05), but the final body weight (FBW), weight gain rate (WGR) and specific growth rate (SGR) of YS9 group were significantly reduced (P<0.05); (2) In terms of muscle quality, compared with YS0 group, the crude protein content, selenium content, hydroxyproline content and hardness of grass carp muscle in YS3 group were significantly increased (P<0.05), and the fiber diameter and cohesiveness of muscle were significantly decreased (P<0.05). The study indicated that the addition of YS to the diet containing cottonseed protein concentrate (the selenium content of the diet was 0.6 mg/kg) had no significant effect on the growth performance of grass carp, and flesh quality were significantly improved. However, exceeded dietary YS had negative influence on the growth performance of grass carp. This study provides a theoretical basis for further application of cottonseed protein concentrate in aquatic feed.

     

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