ENERGY AND PROTEIN INGREDIENTS FOR USE IN PIAPARA (&lt;i&gt;Megaleporinus obtusidens&lt;/i&gt;) DIETS: NUTRITIVE VALUE AND INTESTINAL MORPHOMETRY

Renata Akemi Tanaka,Gabriela Castellani Carli,Viviane Do Nascimento Santana De Almeida,Leonardo Susumu Takahashi,Cleber Fernando Menegasso Mansano,Luana Camargo Sousa,Carolina Vasconcelos Tavares De Farias

doi:10.20950/1678-2305/bip.2021.47.e633

Abstract

The apparent digestibility coefficients for crude protein (ADCCP), dry matter (ADCDM), and gross energy (ADCGE) of ingredients were determined for piapara (Megaleporinus obtusidens). Test diets were formulated to contain 69.5% of reference diet, 0.5% of chromium oxide, and 30% of test ingredients. The protein ingredients evaluated were tilapia processing residue meal (TPRM), feather and poultry blood meal (FPBM), poultry by-product meal (PBM), meat and bone meal (MBM), cottonseed meal (CM), corn gluten meal (CGM), and soybean meal (SM); the energy ingredients tested were corn (C), corn germ meal (CGRM), rice meal (RM), wheat bran (WB), and sorghum (S). Groups of 30 piaparas were fed twice daily during five days with test diets. Intestinal morphometry of fish were also evaluated. Digestibility coefficients of protein and energy ingredients were highest for soybean meal (ADCDM = 85.8%; ADCCP = 95.2%; and ADCGE = 87.2%) and corn (ADCDM = 94.5%; ADCCP = 76.2%; and ADCGE = 89.3%), respectively. Of the energy test ingredients analyzed, corn had the highest digestibility coefficients and induced beneficial changes on intestinal morphology compared to sorghum and corn germ meal. All protein ingredients showed potential for use in piapara diets, except meat and bone meal .

Highlights

Aquaculture is the fastest growing food-producing sector in the world, contributing substantially to economic growth and food security, especially in developing countries
Significant differences were observed in apparent digestibility coefficients of dry matter (ADCDM) and apparent digestibility coefficients for crude protein (ADCCP) in both feed groups
The energy ingredient with the highest ADCDM was sorghum (97.2%) and the lowest ADCDM values were found for rice meal (71.8%) and corn germ meal (48.0%)

Summary

Introduction

Aquaculture is the fastest growing food-producing sector in the world, contributing substantially to economic growth and food security, especially in developing countries. Reducing feed costs is a significant challenge to promoting sustainable and profitable. ENERGY AND PROTEIN INGREDIENTS FOR USE IN PIAPARA. Aquaculture development, which can be achieved by replacing conventional ingredients with foods capable of promoting the growth potential of fish at a lower cost (Couto et al, 2016). Fishmeal produced from whole fish besides the high protein content is a great source of fatty acids and minerals and has been widely used in diets due to its high palatability and balanced amino acid profile (Gatlin et al, 2007). Combining protein and energy ingredients in a competitive and environmentally friendly manner is a major challenge for feed formulators (Mungkung et al, 2013)

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