Productive traits and digestibility of cassava leaf meal in broiler diets with or without addition of enzymes

Revista Brasileira de Zootecnia

Fonseca, Ricardo Alves da³  Guedes Filho, Reginaldo de Souza¹  Silva, Hunaldo Oliveira² 

[1] UFPB;Escola Agrotécnica Federal de São Cristóvão;Universidade Estadual do Oeste do Paraná, Mal. Cândido Rondon

关键词: crude fiber;    diet intake;    feed:gain ratio;    gross energy;    multienzyme complex;    weight gain     IntroduçãoA proporção de grãos componentes das rações engloba;    aproximadamente;    60% da alimentação de suínos;    60% de galinha poedeira e 70% de frangos de corte;   

DOI  :  10.1590/S1516-35982000000300026

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

- Experiments were carried out to determine the digestibility (Experiment 1) and the effect of the inclusion of cassava leaf meal (CLM) with and without the addition of multi-enzyme complexes (MEC) in male broiler diets (Experiment 2) of the Hubbard strain. The MECs used were made up of Energex (b-glucanase, pectinase, hemicellulose) and Bio-Feed Alpha (b-glucanase, amylase). In Experiment 1, birds with 21 days of age were used, with the level of inclusion of 0 - 41.67% of CLM to determine the digestibility coefficient of the gross energy and crude fiber (DCGE/DCCF) and to determine the values of apparent and corrected metabolizable energy (AME/nAME). In Experiment 2, birds from 1 to 21 days of age, fed diets with levels of inclusion of 0 - 10.34% of CLM were used to evaluate the average feed intake (DAI), average weight gain (AWG) and average feed: gain (AF: G). In Experiment 1, there was difference for the values of DCGE, DCCF, AME and nAME, occurring a decrease on the digestibility as the CLM inclusion levels increased on the basal diet. With the addition of the MECs, an improvement in the analyzed traits was evidenced. The determination of the values of AME and nAME were of 1.697 and 1.694 kcal/Kg/DM CLM, respectively. In Experiment 2, the level of highest inclusion of CLM was the one which presented the poorest result for the traits RAI, AWG and AFC while the level of 5.17% of CLM did not impair the animals performance. The addition of the MEC did not improve the nutritive value of CLM.

【 授权许可】

CC BY-NC