Effects of dietary carbohydrate levels on growth performance, feed utilization, liver histology and intestinal microflora of juvenile tiger puffer, Takifugu rubripes

Guo, Qingqing; Wang, Yuetao; Li, Ning; Li, Tao; Guan, Yujing; Wang, Yonghui; Zhang, Peiyu; Li, Zhi; Liu, Haiyan

doi:10.1016/j.aqrep.2024.102035

Cited by 3 publications

(1 citation statement)

References 54 publications

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“…However, in this study, the viscerosomatic index did not differ significantly between the experimental groups, although the RTF1 and RTF2 groups showed a higher HSI than the ASF group, which is believed to have been due to the carbohydrate content of the feed. Some studies showed that a high-carbohydrate-diet group had a higher HSI than groups with low-carbohydrate diets, suggesting that high-carbohydrate diets can induce glycogen storage in the liver and subsequently increase liver weight [ 49 , 50 ]. Similar to the present study, a low-lipid diet group showed a higher HSI in the fry and juvenile stages of rainbow trout, grass carp, iridescent shark ( Pangasius hypophthalmus ) and seabass ( Dicentrarchus labrax ) [ 41 , 51 ].…”

Section: Discussionmentioning

confidence: 99%

Effects of Low-Lipid Diets on Growth, Haematology, Histology and Immune Responses of Parr-Stage Atlantic Salmon (Salmo salar)

Lee,

Lim

et al. 2024

Animals

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Lipids in fish diets provide energy and play important roles in immunity and metabolism. Atlantic salmon, a species that migrates from freshwater to seawater, requires high energy, especially during smoltification. Juvenile teleosts have low lipid requirements, and a high dietary lipid content is known to have negative effects on their growth and digestion. Therefore, this study evaluated the effect of two commercial rainbow trout feeds (low-lipid, 13.41% and 14.6%) on the growth and immune responses of early parr-stage Atlantic salmon compared to commercial salmon feed (high-lipid, 29.52%). Atlantic salmon parr (weight: 14.56 ± 2.1 g; length: 11.23 ± 0.44 cm) were randomly divided into three groups and fed either one of two commercial rainbow trout feeds (RTF1 and RTF2) or the commercial salmon feed (ASF) for 12 weeks. At the end of the feeding trial, growth, haematology, histology and gene expression analyses were performed. There were no significant differences in weight gain rates or feed efficiency between the groups (p > 0.05). Superoxidate dismutase, glutathione peroxidase, lysozyme and immunoglobulin M activities were not different among the experimental groups (p > 0.05). A histological examination of the liver and intestinal tissues showed no pathological symptoms of inflammatory response or lipid accumulation in any of the groups. In an intestinal transcriptome analysis using RNA-seq, the expression levels of several genes linked to lipids, immune-related proteins, cytokines and chemokines did not differ significantly between the groups (p > 0.05). Commercial rainbow trout feed with low lipid content has no clear negative impact on the development of Atlantic salmon during the early parr stage (14.5 to 39.6 g). This study provides basic information for the development of economical feed for early parr-stage Atlantic salmon.

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Section: Discussionmentioning

confidence: 99%

Effects of Low-Lipid Diets on Growth, Haematology, Histology and Immune Responses of Parr-Stage Atlantic Salmon (Salmo salar)

Lee,

Lim

et al. 2024

Animals

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Effects of dietary dextrin level on growth performance, feed utilization, biochemical composition, digestive enzyme activity, antioxidant capacity and tissue structure of juvenile Onychostoma macrolepis

Zhong,

Hu,

et al. 2024

Animal Feed Science and Technology

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Effect of Low-Proportion Replacement of Dietary Fishmeal with Neanthes japonica Meal on Growth Performance, Body Composition, Muscle Texture, Serum Biochemistry, Digestive Enzymes and Gene Expression in Juvenile Tiger Puffer Takifugu rubripes

Gao,

Fan,

Zhang

et al. 2024

Fishes

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The polychaeta Neanthes japonica is a common by-product in mariculture ponds. It is rich in essential nutrients, but has not been well-explored. Therefore, this 56-day experiment investigated the effects of substituting N. japonica meal for dietary fishmeal on juvenile tiger puffer (15.49 ± 0.02 g, n = 450 fish). The control diet (CON) contained 40% fishmeal. Freeze-dried N. japonica meal (FNM) was supplemented into CON at the levels of 3% (FNM3), 6% (FNM6), and 9% (FNM9), replacing fishmeal. The fifth diet contained 6% oven-dried N. japonica meal (ONM6), replacing fishmeal. The results indicated that no significant difference was observed in growth, feed efficiency, and somatic index among all the treatment groups. The feed intake of the FNM6 group was significantly higher compared to CON. No significant difference was detected in fish proximate composition, as well as the fatty acid composition, amino acid composition, and muscle texture. The supplementation of N. japonica meal decreased the activities of intestinal lipase and α-amylase. The addition of freeze-dried N. japonica meal significantly up-regulated the expression of the intestinal amino-glycine transporter pat1. It was concluded that adding 9% N. japonica meal to the feed had no significant effect on the growth performance and body composition of juvenile tiger puffer.

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Effects of dietary carbohydrate levels on growth performance, feed utilization, liver histology and intestinal microflora of juvenile tiger puffer, Takifugu rubripes

Cited by 3 publications

References 54 publications

Effects of Low-Lipid Diets on Growth, Haematology, Histology and Immune Responses of Parr-Stage Atlantic Salmon (Salmo salar)

Effects of Low-Lipid Diets on Growth, Haematology, Histology and Immune Responses of Parr-Stage Atlantic Salmon (Salmo salar)

Effects of dietary dextrin level on growth performance, feed utilization, biochemical composition, digestive enzyme activity, antioxidant capacity and tissue structure of juvenile Onychostoma macrolepis

Effect of Low-Proportion Replacement of Dietary Fishmeal with Neanthes japonica Meal on Growth Performance, Body Composition, Muscle Texture, Serum Biochemistry, Digestive Enzymes and Gene Expression in Juvenile Tiger Puffer Takifugu rubripes

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