Asian-Pacific Aquaculture 2019

June 19 - 21, 2019

Chennai Tamil Nadu - India

REPLACEMENT OF FISHMEAL BY SOY PROTEIN CONCENTRATE IN SHRIMP FEEDS

Yang-Su Kim*, Kyoung-Jin Jung and Bruno Lima
CJ Cheiljedang, BIO) Technical marketing team
yangsu.kim@cj.net
 

Soy Protein Concentrate (SPC) is a product resulting of soybean process by an alcoholic extraction, increasing protein concentration above 60% and reducing anti-nutritional factors, which improves protein digestibility and provide an excellent profile of amino acids. A study aimed to evaluate growth performance of juvenile white shrimp, Litopenaeus vannamei, feeding four diets containing increasing levels of replacement of fishmeal (FM) by SPC, to categorize, in terms of livestock (survival factor, feed conversion rate, growth, body weight and productivity) and economic, feeding different diets for juveniles of the species under controlled conditions of cultivation. The study was conducted at the Nutrition Laboratory of Aquatic Organisms Labomar/University Federal Ceará, located in the municipality of Eusébio, Ceará. Shrimp (70 shrimps/m2; 40 shrimps/tank) were distributed into twenty tanks (four groups X five replicates) and fed with the four experimental diets for 73 days. The diets were produced: an FM-based reference diet (100% FM, CP00); three experimental diets (CP05, CP07 and CP10) prepared by replacing FM with SPC NON-GMO commercially by CJ Selecta (Araguari, Brazil). All diets were designed to contain a minimum of 36.0% crude protein, ether extract 7.9% and a maximum of 12% moisture. No statistically significant difference of body weight of shrimp between diets evaluated (P>0.05). The growth of shrimp reached values close to 1.0 g/week (P>0.05). Fishmeal replacement by SPC in diets CP05 and CP07 was more advantageous in terms of productivity of shrimp than the CP00 control diet without SPC. As the difference between the cost of formulating these diets was less than 0.6%, the use of SPC becomes more economically competitive, even considering the DL-methionine supplementation with fish oil, squid meal and inorganic phosphate. Although in terms of cost, the formulas have remained very similar values (CV=0.52%), the advantage of using SPC instead of other animal ingredients is its availability and constant nutritional quality. The average daily food consumption by the shrimp reached 17.5 ± 0.01 g/shrimp. There was no detectable difference in food intake of diets (P> 0.05). The shrimp feed the experimental diets did not differ from each other (P> 0.05). The FCR averaged 1.81 ± 0.01, consistent with recent achieved in previous studies performed in the laboratory. These results show that SPC is beneficial to shrimp feeding, not only on a nutritional perspective but also on an economical perspective. SPC is a sustainable protein source, providing less environmental impact to the shrimp farming, and its use strategy can be combined with other amino acids and nucleotides such as inosine monophosphate (IMP), which can improve shrimp feed intake in higher vegetable protein inclusion diets.