Effect of Different Feeding Rates for the Growth and Body Composition of Manchurian Trout, Brachymystax lenok

文献类型: 外文期刊

第一作者: Liu, Enhui

作者: Liu, Enhui;Huang, Tianqing;Gu, Wei;Wang, Gaochao;Wang, Bingqian;Shi, Xiulan;Xu, Gefeng

作者机构:

期刊名称:JOURNAL OF APPLIED ICHTHYOLOGY ( 影响因子:0.9; 五年影响因子:0.9 )

ISSN: 0175-8659

年卷期: 2023 年 2023 卷

页码:

收录情况: SCI

摘要: A 50-day feeding trial was conducted to investigate the e0ects of feeding rates (FRs) on the growth, feed utilisation, and body composition of Brachymystax lenok. Juveniles of B. lenok (initial body weight of 7.6 +/- 0.2 g) were fed a commercial diet at the di0erent FRs of 1, 2, 3, 4, and 5% of their body weight. *e results indicated that weight gain (WG) and speci9c growth rate (SGR) were 9rst increased and then decreased with an increase in the FR. *e WG and SGR of the 4% group were 299.78% and 3.96%, respectively. *e feed conversion ratio (FCR) and protein e 0.05). However, the FR signi9cantly a0ected the hepatosomatic index (HSI) and visceral somatic index (VSI) ( P < 0.05). With an increase in the FR, the moisture content of the 9sh decreased, but the ash content changed irregularly. *e protein content increased signi9cantly with increasing FR (P < 0.05). *e lipid content showed a trend similar to protein in the body. Based on the SGR and FCR data, the optimal FR range was 2.4 to 3.1% for B. lenok (7-30 g body weight) at a water temperature of 16 degrees C.

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