The effect of substituting Undaria pinnatifida in formulated feeds with Sargassum horneri on growth and body composition of juvenile abalone (Haliotis discus, Reeve 1846)

Substitution effect of Undaria pinnatifida with citrus ( Citrus unshiu , Marcovitch) peel by‐product in feed on the growth, body composition and air exposure stressor of juvenile abalone ( Haliotis discus , Reeve 1846)

“…All formulated diets substituting U. pinnatifida with CPB produced the superior shell growth and soft body weight of abalone to those of abalone fed the dry U. pinnatifida in this study, agreeing with other studies showing that shell growth of abalone fed the nutritionbalanced diets was greater than that of abalone fed the U. pinnatifida (Ansary et al, 2019b(Ansary et al, , 2019aChoi et al, 2018;Jang et al, 2018).…”

“…Higher weight gain and SGR of abalone fed all formulated diets compared to those of abalone fed the dry U. pinnatifida in this study was well supported by other studies showing the nutrition‐balanced formulated diets achieved improvement in growth performance of abalone over the single MA, such as Macrocystis pyrifera Linnaeus, Gracilariopsis bailinae Zhang and Xia, U. pinnatifida or S. japonica (Ansary et al, , ; Bautista‐Teruel & Millamena, ; Cho, Park, Kim, Yoo, & Lee, ; Choi et al, ; Jang et al, ; Jung et al, ; Myung et al, ; Viana, López, & Salas, ). Especially, rice bran was the good alternative source for S. japonica in abalone feed when 200 g/kg S. japonica was included (Kim et al, ).…”

“…Higher retention of dry matter, crude protein, crude lipid and ash contents in all formulated diets compared to the dry U. pinnatifida at all period of observations, except for crude lipid content in the CPB1000 diet at 12 hr after seawater immersion in this study, was partially accountable for superior growth performance of abalone fed the formers to the latter. This could be well explained by other studies showing that higher water stability of nutrients in formulated feeds compared to the single U. pinnatifida could be another reason for superior growth performance of abalone ( H. discus ) fed the formers (Ansary et al, ; Lee et al, ). Lee et al () also reported that the retained dry matter and crude protein content were lower in U. pinnatifida compared to all extruded pellets and S .…”

“…pinnatifida in this study, agreeing with other studies showing that shell growth of abalone fed the nutrition‐balanced diets was greater than that of abalone fed the U . pinnatifida (Ansary et al, , ; Choi et al, ; Jang et al, ). Abalone fed the CPB500 diet achieved the greatest shell length and width and soft body weight of abalone, which was directly reflected from the greatest growth performance of abalone in this study.…”

Growth performance and the soft body composition of juvenile abalone,Haliotis discus, Reeve 1846, fed the extruded pellets substituting fish meal and macroalgae with tunic meal of sea squirt,Halocynthia roretzi

“…Biological indices (shell length and width and the soft body weight) were well reflected from growth performance of abalone in this study. Similarly, the increased biological measurements of abalone agreed with improved growth performance of abalone (Ansary et al, , ; Baek et al, ; Choi et al, ; Jang et al, ; Lee et al, ; Myung et al, ).…”