The optimal dietary protein level of juvenile silver sillago
            <i>Sillago sihama</i>
            at three dietary lipid levels

Huang, Qincheng; Qin, D.G.; Tan, Beiping; Du, Tao; Yang, Yefeng; Yang, Qihui; Chi, Shuyan; Dong, Xiaohui

doi:10.1111/are.14431

Cited by 8 publications

(5 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Feeding high-lipid diets has been shown to increase VSI in several fish species, such as in grass carp [25], silver sillago (Sillago sihama) [23], cobia (Rachycentron canadum) [26], and Japanese seabass (Lateolabrax japonicus) [27]. However, in our study, we observed only a non-significant tendency toward an increased VSI in HL-fed group.…”

Section: Discussioncontrasting

confidence: 93%

See 1 more Smart Citation

Black Soldier Fly Oil in Different Lipid Diets Could Regulate Tissue Lipid Metabolism and Fatty Acid Composition of Juvenile Mirror Carp

Xu,

Ji,

et al. 2024

Aquaculture Nutrition

View full text Add to dashboard Cite

In the present study, our aim was to assess the effect of dietary black soldier fly oil (BSFO) with different lipid contents on the growth performance, body composition, lipid metabolism, and related gene expression in juvenile mirror carp (Cyprinus carpio var. specularis). An 8-week feeding trial was conducted using four isonitrogenous diets (32.0% crude protein) containing two lipid levels: 6% (control (CT) group) and 9% (high lipid (HL) group), both using soybean oil as the oil source. The other two diets contained BSFO on the basis of 6% and 9% lipid, referred to as (CT + BSFO) and (HL + BSFO) groups. The results showed that final body weight, weight gain rate, specific growth rate, protein retention ratio, and feed utilization were significantly increased by using higher dietary lipid levels (P<0.05). Additionally, the gene expression of lipid synthesis markers was significantly up-regulated in intra-peritoneal fat but significantly down-regulated in the hepatopancreas due to increased dietary lipid level (P<0.05). No negative effects on feed utilization or growth performance were observed in fish fed diets containing BSFO. However, the intra-peritoneal fat index, adipocyte size, and hepatopancreas lipid content were significantly decreased in the CT + BSFO group compared to the CT group (P<0.05). Furthermore, BSFO also up-regulated the expression of lipid lipolysis markers in the hepatopancreas and intra-peritoneal fat (P<0.05). Moreover, the use of BSFO also increased the content of n-3 polyunsaturated fatty acid (PUFA) while reducing the content of n-6 PUFA in the muscle (P<0.05). In conclusion, HL diets improved the growth of the fish and increased the lipid deposition. BSFO in the diet resulted in a reduction of lipid deposition in the hepatopancreas and intra-peritoneal fat, likely due to an increase in lipid oxidation.

show abstract

Section: Discussioncontrasting

confidence: 93%

“…A lower LRR was observed in the HL groups, indicating that a substantial portion of these added lipids was utilized for energy supply, thus promoting the protein-sparing effect seen. This has also been previously observed in grass carp (Ctenopharyngodon idellus) and some other fish species when fish fed with highlipid diets [23,24].…”

Section: Discussionsupporting

confidence: 78%

Black Soldier Fly Oil in Different Lipid Diets Could Regulate Tissue Lipid Metabolism and Fatty Acid Composition of Juvenile Mirror Carp

Xu,

Ji,

et al. 2024

Aquaculture Nutrition

View full text Add to dashboard Cite

show abstract

“…The positive relationship between lipase activities and dietary lipid content in that study was determined based on the changes in lipase activities of A. japonicus fed the isonitrogenous diet. Thus, in the present study, the changes in lipase activities of A. japonicus fed different diets might be not only affected by dietary lipids but also other dietary nutrients, which was furtherly supported by previous findings that the dietary proteins, carbohydrates, and lipids had interactive effects on the lipase activities (Xia et al, 2015a;Huang et al, 2019). According to the changes in digestive enzyme activities induced by different diets, great plasticity of the digestive enzymes under exposure to different diets was found in A. japonicus in stage I.…”

Section: Discussionsupporting

confidence: 89%

Persistence of Digestive Enzyme Activities of Sea Cucumber (Apostichopus japonicus): Evidence From Diet Switch After Evisceration

Gao

Tian

et al. 2022

Front. Mar. Sci.

View full text Add to dashboard Cite

A two-stage diet-switch experiment was conducted to examine the hypothesis that the changes in digestive enzyme activities of sea cucumber (Apostichopus japonicus) induced by historic diets might persist in the regenerated intestines. In stage I, A. japonicus were treated with two different diets for 56 days, including diet A with 11% crude protein, 1% crude lipid, and 40% carbohydrate, and diet B with 18% crude protein, 2% crude lipid, and 35% carbohydrate. In stage II, each treatment was subjected to evisceration with 0.35M KCl or not (eviscerated and non-eviscerated groups), half of which were then switched to different diets from diet A to B or vice versa for 112 days. The persistence of digestive enzyme activities was evaluated by measuring the changes in digestive enzyme activities before and after evisceration. In stage I, diets B and A increased trypsin and amylase activities, respectively. In stage II, the higher trypsin activities were observed in eviscerated and non-eviscerated A. japonicus that had consumed diet B in stage I. The higher amylase activities were observed only in eviscerated A. japonicus that had consumed diet A in stage I. It indicated that the historic diets showed long-term effects on the digestion of A. japonicus, which led to the persistence of changes in both trypsin and amylase activities in intestines, especially in the regenerated intestines. In addition, the specific growth rates (SGRs) and metabolic rates (MRs) of A. japonicus were affected by the long-term effects of historic diets. Meanwhile, the relationships between enzymic activities, SGRs, and MRs were observed in A. japonicus, indicating that the historic diets could produce long-term effects on the growth and metabolism of A. japonicus through their long-term effects of historic diets on digestive enzyme activities. In conclusion, the present study showed that the changes in digestive enzyme activities induced by different diets in stage I could persist in the intestines and regenerated intestines, leading to long-term effects of historic diets on the growth and metabolism of A. japonicus.

show abstract

“…However, a sharp decline occurred once the protein ratio reached 55% in the diet. Similar findings were found in the literature for bagrid catfish Hemibagrus nemurus (Ng et al, 2001), rainbow trout Oncorhynchus mykiss (Ma et al, 2019), juvenile silver sillago Sillago sihama (Huang et al, 2020) and juvenile striped catfish Pangasianodon hypophthalmus (Jayant et al, 2018). The negative effect of excess protein levels on growth has been previously reported in studies demonstrating an increase in nitrogen metabolism from protein deamination results in less energy available for growth (McGoogan & Gatlin, 2000;Miao et al, 2020).…”

Section: Discussionsupporting

confidence: 89%

Effects of dietary protein level on growth, histology and digestive enzyme activities of ornamental fish Ancistrus cirrhosus

Şahin

Gürkan

2022

Aquaculture Research

View full text Add to dashboard Cite

Regardless of the developmental stage of the cultured organism, proper nutritional care is essential. A significant number of aquacultural species rely on protein as their main energy source and protein feeds sold in the ornamental market are formulated with widely varying protein inclusion levels. As Ancistrus cirrhosus is one of the most popular ornamental fish species, this study aimed to determine the effects of different protein levels on growth, digestive enzyme activities and liver and intestinal histopathology. Therefore, 450 fry (98.5 ± 3.1 mg [mean ± SE]), 5-6 weeks old, were fed six different experimental diets containing 30%, 35%, 40%, 45%, 50% and 55% crude protein in triplicate groups for 60 days. The results demonstrated that no significant differences were observed in the final lengths, whole-body protein levels, body condition indices and lipase and alkaline phosphatase activities of fish between groups. The fish fed with a 40% protein diet differed positively from other experimental groups in terms of final weight, FCR, SGR, proteolytic enzyme activities and histopathological findings. Lower proteolytic activity was ascertained in fish fed feed containing lower levels of protein (30%, 35%) and increased histopathological defects in the intestine and liver of fish fed feed containing over 40% protein (45%, 50% and 55%). Based on our results, a diet with a 40% protein level is most beneficial for the rearing of A. cirrhosus fry. Further research is required to determine optimal ratios, which are predicted to be between 35 and 40.

show abstract

The optimal dietary protein level of juvenile silver sillago Sillago sihama at three dietary lipid levels

Cited by 8 publications

References 67 publications

Black Soldier Fly Oil in Different Lipid Diets Could Regulate Tissue Lipid Metabolism and Fatty Acid Composition of Juvenile Mirror Carp

Black Soldier Fly Oil in Different Lipid Diets Could Regulate Tissue Lipid Metabolism and Fatty Acid Composition of Juvenile Mirror Carp

Persistence of Digestive Enzyme Activities of Sea Cucumber (Apostichopus japonicus): Evidence From Diet Switch After Evisceration

Effects of dietary protein level on growth, histology and digestive enzyme activities of ornamental fish Ancistrus cirrhosus

Contact Info

Product

Resources

About