2021
DOI: 10.1111/anu.13230
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Effects of dietary protein levels on growth performance, serum indexes, PI3K/AKT/mTOR/S6K signalling and intestinal microbiota of abalone Haliotis discus hannai

Abstract: A 120‐day feeding trial was conducted to assess the effect of dietary protein levels on growth performance, serum indexes, PI3 K/AKT/mTOR/S6 K signalling pathway and intestinal microbiota of abalone Haliotis discus hannai. Abalones (initial body weight: 15.88–16.54 g; initial shell length 41.70–42.40 mm) were fed nine isoenergetic (~16.08 kJ/g) and isolipidic (~42.0 g/kg) experimental diets with 93.5, 116.9, 151.1, 191.8, 230.3, 275.9, 320.3, 360.5 and 405.9 g/kg protein contents, respectively. Results showed … Show more

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Cited by 10 publications
(6 citation statements)
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“…Disregarding the water temperature, WGR and SGR increased with increasing dietary protein levels and reached a peak at the 302.6 g/kg protein group and decreased gradually as the protein levels continued to increase. Similar results were reported for other abalone species, such as H. discus hannai [13,14], H. midue [15,17], H. laevigata [19], and H. iris [22]. A second-order polynomial regression analysis based on SGR suggested that the optimum dietary protein levels for juvenile DF were 333.1, 318.6, and 306.3 g crude protein/kg diet at 19 °C, 23 °C, and 27 °C, respectively.…”
Section: Optimal Dietary Protein Level For Growth Under Threesupporting
confidence: 81%
See 1 more Smart Citation
“…Disregarding the water temperature, WGR and SGR increased with increasing dietary protein levels and reached a peak at the 302.6 g/kg protein group and decreased gradually as the protein levels continued to increase. Similar results were reported for other abalone species, such as H. discus hannai [13,14], H. midue [15,17], H. laevigata [19], and H. iris [22]. A second-order polynomial regression analysis based on SGR suggested that the optimum dietary protein levels for juvenile DF were 333.1, 318.6, and 306.3 g crude protein/kg diet at 19 °C, 23 °C, and 27 °C, respectively.…”
Section: Optimal Dietary Protein Level For Growth Under Threesupporting
confidence: 81%
“…Protein levels substantially affect animal growth and feed cost [10][11][12]. Many studies have evaluated the optimum dietary protein level for abalone, including H. discus hannai [13,14], South African abalone (H. midae) [15][16][17], greenlip abalone (H. laevigata) [18,19], blacklip abalone (H. rubra) [20], H. tuberculata [14], ear abalone (H. asinina) [21], black-footed abalone (H. iris) [22], and pink abalone (H. corrugata) [23]. The optimal protein levels for abalone varied among different species and ranged from 27% to 47%.…”
Section: Introductionmentioning
confidence: 99%
“…Probabilities of p < 0.05 were regarded as significant. The analytical methods for gut microbes were followed by Ma et al (2021).…”
Section: Methodsmentioning
confidence: 99%
“…Rendahnya pertambahan berat tubuh serta laju pertumbuhan spesifik abalon yang diberi pakan kontrol dimungkinkan karena rendahnya kandungan protein (14,1%) di dalam pakan (Tabel 3), sehingga tidak memenuhi kebutuhan asupan nutrisi untuk proses pertumbuhan. Ma et al (2021) melaporkan bahwa kandungan protein <15% atau >36% di dalam pakan akan menyebabkan efek negatif bagi pertumbuhan, komposisi mikroba didalam usus, serta aktivitas enzim pencernaan pada abalon H. duscus hannai.…”
Section: Pembahasanunclassified