Intake and total apparent digestibility in lambs fed six maize varieties in the Brazilian Semiarid

Abstract

-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.

Altura De Corte E Adição De Inoculante Enzimo-Bacteriano Na Composição Químico-Bromatológica E Digestibilidade De Silagens De Milho Avaliada Em Ovinos

“…O que ocasionou os baixos valores de NDT foi a baixa digestibilidade da fração fibrosa (DFDN, DFDA). As DFDN, DFDA e as concentrações de NDT foram inferiores aos apresentados por Santos et al (27) ; no entanto, o trabalho citado ofereceu apenas silagem de milho, o que tende a aumentar o tempo de retenção, aumentando assim os valores de digestibilidade do componentes fibrosos.…”

Agronomic traits, ensilability and nutritive value of five pearl millet cultivars grown in a Brazilian semi-arid region

“…The average NDF intake as a percentage of BW (2·8%) was higher than that shown by dos Santos et al . (2011), who reported a percentage of 1·5% for Santa Ines lambs reared in the Brazilian semi-arid zone and fed maize silage.…”