Intake and total apparent digestibility in lambs fed six maize varieties in the Brazilian Semiarid
AUTOR(ES)
Santos, Rafael Dantas dos, Pereira, Luiz Gustavo Ribeiro, Neves, André Luis Alves, Araújo, Gherman Garcia Leal de, Aragão, Alex Santos Lustosa de, Chizzotti, Mário Luiz
FONTE
Revista Brasileira de Zootecnia
DATA DE PUBLICAÇÃO
2011-12
RESUMO
The objective of this study was to evaluate the daily intake and total apparent digestibility of dry matter, organic matter, crude protein, gross energy, ether extract, neutral detergent fiber, acid detergent fiber, total and non-fibrous carbohydrates, total digestible nutrients, energy intake and nitrogen balance of silages of six maize varieties with early or super early cycles recommended to Northeast Brazil. Twenty-four male castrated lambs were lodged in metabolic cages. A completely randomized design with six treatments and four replications was used, with means compared by Tukey test at 5%. There were no differences among varieties for any of the evaluated variables regarding intake and apparent digestibility. Concerning the intake of digestible energy, metabolizable energy and the ratio content of digestible and metabolizable energy, significant differences were observed between varieties and BRS Assum Preto showed highest values of metabolizable energy (2.650,8 kcal/day). All of the treatments presented positive nitrogen balance and did not differ among themselves. The varieties asessed can be an additional option to the semiarid regions in Brazil.
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