Effect of dietary amino acid composition from proteins alternative to fishmeal on the growth of juveniles of the common snook, Centropomus undecimalis

Abstract

-This study investigated the effect of dietary amino acid composition from proteins alternative to fishmeal on the growth performance of the common snook, Centropomus undecimalis. ) and achieved the lowest body weight (31.1±6.62 and 33.3±10.20 vs 40.4±13.18 g) and the highest feed conversion ratio (3.69±0.29 and 3.11±0.51 vs 2.33±0.34) when fed SPC and basal diets compared with PBM, respectively. Retention of dietary crude protein varied from 36 to 38% for fish fed the basal and SPC diets, but exceeded 51% in fish fed PBM. Results indicate a greater ability of the common snook to gain weight and increase retention of nutrients when dietary protein is of terrestrial animal origin. Dietary protein from PBM yields a more balanced dietary amino acid composition relative to fish muscle, but possibly in excess of the species requirements.

Short Communication: Diversity of duckweed (Araceae-Lemnoideae), morphological characteristics and its potentials as food sources for herbivorous fishes in West Java, Indonesia

“…is sufficient to fulfill fish's need, so it can be used as feed source. The use of protein sources and amino acid composition in feed influences protein retention in certain types of fish (Aslam and Zuberi 2017;Silvão and Nunes 2017).…”

Different Densities of Common Snook Reared in Marine Cages in Southern Brazil

“…In a study with fat snook juveniles, the use of feed for marine shrimp had a better zootechnical performance than using feed for carnivorous fish (Tsuzuki and Berestinas, 2008). Silvão and Nunes (2017) evaluated the effects of different dietary amino acid compositions for C. undecimalis and found a greater ability of snook to gain weight and increase nutrient retention when the dietary protein was of animal origin, such as protein from poultry by-product meal, with a composition of dietary amino acids more balanced in relation to that of fish muscle. David et al (2019), comparing diets without carbohydrates (60.59 g of crude protein) and with 15.25 g of carbohydrates (46.62 g of crude protein) in the fattening of common snook in a recirculation system, at an average temperature of 28.29 ºC, found an increase in weight by 22.20% for fish fed the diet without carbohydrates.…”