Cassava by-product flour replacing corn in ration for sheep: intake, digestibility, nitrogen and energy balances and ruminal parameters

Revista Brasileira de Zootecnia

Dian, Paulo Henrique Moura¹  Zeoula, Lúcia Maria²  Geron, Luiz Juliano Valério²  Maeda, Emilyn Midore¹  Prado, Ivanor Nunes do²  Caldas Neto, Saul Ferreira²  Jorge, João Ricardo Vieira²  Marques, Jair de Araújo³ 

[1] Universidade Estadual de Maringá;Centro Integrado de Ensino Superior, Campo Mourão

关键词: /font> cassava by-product flour;    corn;    digestibility;    intake;    nitrogen balance;    sheep    Introdução A alimentação dos animais representa um dos maiores custos na produção animal;    principalmente quando se utilizam fontes alimentares como o milho;    que apesar das elevadas qualidades nutricionais apresentam em geral um custo elevado;   

DOI  :  10.1590/S1516-35982003000200030

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

This work was carried-out to study the effect of substitution levels of corn (COR) by cassava by-product flour (CPF) (25, 50, 75 and 100%) in the ration for sheep on voluntary intake, nutrients apparent digestibility and nitrogen (NB) and energy (EB) balance, pH and ammonia concentration (N-NH3) in ruminal liquid. Four male, castrated sheep, without defined race, with medium weight of 41.4 AW, in trial of digestibility were used, using the method of total collect feces and urine. The animals were kept in cages of metabolism in 4x4 latin square design. The ruminal liquid was obtained by means of probe esofagic in the times 0, 2, 4, 6 and 8 hours (after feeding). There was no effect of substitution levels on intake of dry matter (DM), organic matter (OM), neutral detergent fiber (NDF), energy and nitrogen (N) and for apparent digestibility of DM, OM, CP, NDF, starch and gross energy (GE) and for NB and TDN levels. The intake of starch and GE presented quadratic increase until the level of 75% CPM in the ration. The concentration of the ammonia nitrogen and the pH of ruminal liquid did not differ in function of the substitution levels of the COR to CPM. It was concluded that CPM can totally substitute COR in the sheep ration.

【 授权许可】

CC BY-NC