|
Research Article: Effects of dietary protein levels on growth performance, amino and Fatty acids of juvenile sandfish, Holothuria scabra (Jaeger, 1833)
|
| |
|
|
|
چکیده: (1196 مشاهده) |
| The experiment was carried out for 120 days to determine the optimal dietary protein requirement for the growth of sandfish, Holothuria scabra. The experiment used 12 plastic containers sized 59×47×37 cm, and each container stocked 30 individual hatchery-produced sandfish juveniles (initial weight= 2.70±0.01 g). Experimental diets with different levels of protein, i.e., 10% (A), 20% (B), and 30% (C) as a treatment; it was as dry pellet with 3 mm diameters. Sandfish were fed with experimental diets once in the afternoon at 2 % biomass. Results of the experiment showed that sandfish fed a 20% protein diet has the highest final weight (5.10±0.02 g), specific growth rate (SGR; 0.53±0.01 % day-1), and feed efficieny (FE; 62.48±0.13) and is significantly different compared to other treatments (p<0.05). On the other hand, feeding with different dietary protein levels did not influence the survival rate greatly (p>0.05), ranging from 85.00-95.83%. The total amino acid content of sandfish juveniles in treatment B was highest (6.62%) and followed by C (6.27%) and A (4.75%). Likewise, the highest fatty acid content was also found in treatment B (0.440%) followed by treatments A and C of 0.416%; 0.332% respectively. Results of the present study found the best feed was treatment B at 20 % protein content. Moreover, based on statistical analyses, it is suggested that dietary protein requirement for maximum growth of juvenile sandfish is 16%. |
|
| |
|
|
متن کامل [PDF 273 kb]
(1049 دریافت)
|
نوع مطالعه: پژوهشي |
موضوع مقاله:
aquaculture
دریافت: 1401/4/26 | پذیرش: 1401/8/30 | انتشار: 1401/12/3
|
|
|
|
|
|
|
| ارسال نظر درباره این مقاله |
|
|
|
