<b>Replacement of corn <em>Zea mays</em> L. by cassava <em>Manihot esculenta</em> crants meal in grass-carp <em>Ctenopharyngodon idella</em> fingerlings diets</b> - DOI: 10.4025/actascianimsci.v27i2.1228

Abstract

The experiment was carried out aiming to evaluate different substitution levels of corn by cassava meal in grass carp ctenopharyngodon idella fingerlings diets. It was used 120 fingerlings with initial live weigh of 2.51+0.05 g, distributed in 24 net ponds at a randomized blocks design with six treatments and four replications, each block corresponding to a fiber-ciment 1000 L tank with six net ponds (120 L) inside. Each net ponds with five fingerlings was considered an experimental unit. The treatments consisted in rations (32% crude protein and 3000 kcal/kg digestible energy) with different cassava meal inclusion levels of (0.00, 5.99, 11.98, 17.97, 23.95, 29.94) corresponding a 00.0, 20.0, 40.0, 60.0, 80.0 e 100.0% of replacement of corn. Effect were not observed of cassava-by-product meal inclusion levels on the final weight, final length, feed: gain, condition index and survival rate of grass carp ctenopharyngodon idella fingerlings. The water physical-chemical parameters were 22.92oC, 24.54oC 6.38 mg/L, 7.47 e 0.16 ms/cm, respectively to morning temperature, afternoon temperature, dissolved oxygen, ph and electric conduct. It may be concluded that the cassava meal can substitute the corn in even 100% in grass carp fingerlings diets