Efecto del tipo de alimento en el crecimiento peso/talla del camarón litopenaeus vannamei aplicando predigerido versus alimento comercial.

Abstract

The production of Litopenaeus vannamei continues to be problematic in its feeding phase, with its high input costs, mainly due to the dependence on fishmeal in traditional diets. The current proposal to address this problem is the use of predigests, in which vegetable and animal protein are combined. The objective of this study is to evaluate the effect of three types of diets (predigested, blended and mixed) on the growth (weight/length) and survival of Litopenaeus vannamei. Looking for economical, high quality and good digestibility options in comparison with conventional diets. The research was carried out in the city of Machala, province of El Oro, using nine 70 L tanks, randomly distributed, with 10 shrimp in each tank. Three diets were fed, with three replicates, T1 pre-digested feed, T2 balanced feed (control), both with 30% protein and T3 a mixture of T1 and T2. The study lasted four weeks and the feed was fed twice a day. Water parameters such as dissolved oxygen, temperature, pH and salinity were monitored. The average initial weight of the organisms was 2.50 g, the results showed that the average final weight was 4.64 g for T1, 5.46 g for T2 and 4.84 g for T3. In terms of survival, there were no significant differences, although T1 reached 100%, while T2 and T3 recorded 93.33%. Based on these results, it can be concluded that, although the pre-digested feed did not significantly favor growth, it can contribute to maintaining good survival.