Growth performance, digestive enzyme, transaminase and GH-IGF-I axis gene responsiveness to different dietary protein levels in broodstock allogenogynetic gibel carp (Carassius auratus gibelio) CAS III

Tu, Yongqin; Xie, Shouqi; Han, Dong; Yang, Yunxia; Jin, Junyan; Liu, Haokun; Zhu, Xiaoming

doi:10.1016/j.aquaculture.2015.05.003

Cited by 44 publications

(31 citation statements)

References 52 publications

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“…Protein utilization can also be affected by digestible enzymes (Tu et al, ). Pepsin is one of the key enzymes responsible for protein proteolysis.…”

Section: Discussionmentioning

confidence: 99%

“…However, excessive protein in diets will also impose negative effect on the fish growth by converting to energy, which leads to the increase of nitrogenous excretions into water (McGoogan & Gatlin ; Sá et al, ). Therefore, optimal utilization of dietary protein is often the prioritized requirement for commercial feed preparation to achieve the best growth performance of fish at the lowest cost (Tu et al, ).…”

Section: Introductionmentioning

confidence: 99%

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Effects of dietary protein levels on the growth, body composition, serum biochemistry and digestive enzyme activity in Chinese rice field eel ( Monopterus albus ) fingerlings

et al. 2019

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A 12-week feeding trial was conducted to determine the influence of dietary protein levels on growth performance, body composition, haematological parameters and digestive enzyme activity of Chinese rice field eel (Monopterus albus) fingerlings. Six isolipidic experimental diets (27.89%, 32.23%, 35.95%, 40.06%, 43.31% and 46.53%) were formulated to randomly assign to triplicate groups of 50 rice field eel fingerlings (5.0 ± 0.5 g) cultured in plastic cages. Results indicated that the best growth performance of fish with the highest WG (158.68 ± 31.59%) and SGR (2.28 ± 0.21%) was obtained at 40.06% group. Significant alterations were demonstrated on whole-body crude protein, crude lipid and amino acid profile by different dietary protein levels.Besides, haematological parameters including triacylglycerol, aspartate aminotransferase and alkaline phosphatase decreased with various levels by the increasing of dietary protein levels. The lowest pepsin activity was observed in 27.89% protein group, which suggested lower availability of protein as substrate for protease activity. Meanwhile, the highest amylase activity in fish of 27.89% group indicated higher carbohydrate level in this group. Based on the polynomial regression analysis of WG and SGR, the dietary protein requirement for fingerlings of Monopterus albus was estimated to be 386.4-390.8 g/kg, respectively, with the lipid level of 10.08%. K E Y W O R D S body composition, dietary protein requirement, digestive enzyme activity, growth performance, Monopterus albus, serum biochemistry | 401 YUE Et al.

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“…Protein utilization can also be affected by digestible enzymes (Tu et al, ). Pepsin is one of the key enzymes responsible for protein proteolysis.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of dietary protein levels on the growth, body composition, serum biochemistry and digestive enzyme activity in Chinese rice field eel ( Monopterus albus ) fingerlings

et al. 2019

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“…In crucian carp (C. auratus gibelio), based on the broken-line analysis of weight gain, the protein requirement of the juveniles at 3.2 g was estimated as 402 g kg À1 , while the protein requirement of the on-growing carp of 87 g decreased to 337 g kg À1 . When broodstock crucian carp of 180 g was evaluated, the optimum dietary protein level for the fish was 369 g kg À1 , which was higher than that for on-growing fish (Tu et al 2015a). Broken-line regression analysis of specific growth rate demonstrated that dietary arginine requirement for crucian carp was 16.4 g kg À1 for small fish (initial body weight of 52 g) and 12.9 g kg À1 for bigger fish (initial body weight of 148 g), corresponding to 53 and 42 g kg À1 of dietary protein, respectively (Tu et al 2015b).…”

Section: Increasing Knowledge On Amino Acid Requirementsmentioning

confidence: 93%

“…When broodstock crucian carp of 180 g was evaluated, the optimum dietary protein level for the fish was 369 g kg −1 , which was higher than that for on‐growing fish (Tu et al . ). Broken‐line regression analysis of specific growth rate demonstrated that dietary arginine requirement for crucian carp was 16.4 g kg −1 for small fish (initial body weight of 52 g) and 12.9 g kg −1 for bigger fish (initial body weight of 148 g), corresponding to 53 and 42 g kg −1 of dietary protein, respectively (Tu et al .…”

Section: The Discrepancy On Fishmeal Usage and Growth Of Aquafeeds Anmentioning

confidence: 97%

A revisit to fishmeal usage and associated consequences in Chinese aquaculture

Han

Shan

Zhang

et al. 2016

Reviews in Aquaculture

Self Cite

117

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China has dominated global aquaculture production for more than two decades. Aquaculture production in China increased from 24.6 million metric tons (mmt) in 2000 to 47.5 mmt in 2014, an increment of 93.1%. Along with the fast‐growing aquaculture industry, aquafeed production in China increased from 5.1 mmt in 2000 to 19.0 mmt in 2014, an increment of 272.5%. However, despite the rapid increase in aquafeed production, the fishmeal usage in aquafeeds in China has remained stable over the years. Fishmeal imports into China remained relatively steady at 1.0–1.5 mmt per annum from 2000 to 2014. An often unacknowledged fact is that China contributes more than 60% to the world aquaculture production at a cost of only 25–30% of the world fishmeal output. This review attempts to explain why the fishmeal usage has not increased proportionately with the increasing aquafeed production in China from several angles: (i) the current status of fishmeal usage in Chinese aquaculture; (ii) the relationship between the decreasing dietary inclusions of fishmeal and improved feed techniques, especially the use of alternative protein sources for fishmeal; (iii) the dominance of Chinese aquaculture by low trophic level species of plants, filter feeders, herbivores and omnivores and consequent low demands for fishmeal; and (iv) the increasing price of fishmeal and the management of exploitation of wild fisheries in the main fishmeal exporting countries to China. The trends and prospects of fishmeal usage in the future in Chinese aquaculture and the associated consequences are also addressed. Like other countries, China is now actively developing both resource conservation‐based capture fisheries and environment‐friendly freshwater and marine aquaculture systems. Aquaculture will be the main source of aquatic food in the future and will also indirectly contribute to save the world wild fisheries, and China will be main player that will continue to contribute towards this end.

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“…Fish can modulate proteolytic enzyme secretion patterns, as well as the secretion of hormones involved in feed intake, in adjustment to different dietary protein levels (Mohanta, Mohanty, Jena, & Sahu, 2008; Tu et al, 2015). In addition, dietary protein may modulate the expression of the genes of these enzymes and hormones (Jin et al, 2015; Wang et al, 2006), thus making animals more (or less) efficient at converting feed into body tissue.…”

Section: Introductionmentioning

confidence: 99%

Effects of dietary protein levels on activities of protease and expression of ingestion and protein digestion‐related genes in Nile tilapia juveniles

et al. 2020

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While some studies have investigated the effects of dietary protein on the activities of protease in Nile tilapia, little information exists about these enzymes and hormones regulating appetite at the molecular level. Therefore, we investigated the performance, protease activities and expression of genes related to protein intake and digestion in juvenile tilapia fed with diets containing different levels of crude protein (CP): 25.14, 31.12, 36.60 and 42.05%. The fish were fed to apparent satiation three times a day for 65 days. The animal performance and the retention rates of protein and energy linearly decreased with an increase in dietary CP content. A positive quadratic effect of CP on pepsinogen was observed, although the acid protease activity was not affected. Trypsinogen and trypsin activity in the intestine presented similar patterns, showing a positive quadratic response to dietary protein levels. A linear increase in intestinal chymotrypsinogen expression was observed, but the activity of chymotrypsin showed a positive quadratic response. In addition, the expression of cholecystokinin (cck) and peptide yy (pyy) increased linearly with increasing CP. Dietary protein modulates the activity of alkaline proteases as well as the expression of these protease genes and hormones involved in appetite regulation. These changes can help expand our understanding of feed intake and digestion control, thereby improving feed formulations for this species.

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Growth performance, digestive enzyme, transaminase and GH-IGF-I axis gene responsiveness to different dietary protein levels in broodstock allogenogynetic gibel carp (Carassius auratus gibelio) CAS III

Cited by 44 publications

References 52 publications

Effects of dietary protein levels on the growth, body composition, serum biochemistry and digestive enzyme activity in Chinese rice field eel ( Monopterus albus ) fingerlings

Effects of dietary protein levels on the growth, body composition, serum biochemistry and digestive enzyme activity in Chinese rice field eel ( Monopterus albus ) fingerlings

A revisit to fishmeal usage and associated consequences in Chinese aquaculture

Effects of dietary protein levels on activities of protease and expression of ingestion and protein digestion‐related genes in Nile tilapia juveniles

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