ABSTRACT We evaluated the difference between rumen bacteria in Tan sheep fed either by grazing or in a feedlot. The aim was to provide a theoretical basis for ruminant nutrition and meat quality based on rumen fermentation. Twenty-four three-month-old Tan sheep were randomly and equally divided into two groups, the grazing group and ration group. Five sheep of each group were selected for slaughter at six months of age. Ruminal contents were collected and assessed to identify rumen bacteria, based […]

The objective of this study was to evaluate changes in ruminal protozoa in lambs after partial replacement of feed concentrates in their diets with Gliricidia sepium silage. Twenty-four male Santa Ines lambs with an average initial weight of 14.5 kg were used. The experimental design was completely randomized, with four treatments and six replications. Treatments (given as a percentage of dry matter) were as follows: control – corn silage (600 g kg-1 as fed) + concentrate (400 g kg-1 as […]

Com o objetivo de estudar efeito do pH sobre a defaunação no rúmen, quatro novilhos fistulados no rúmen foram alimentados com uma dieta basal com volumoso por um período de quatro semanas, seguido de 17 semanas com três dietas e dois níveis de alimentação com dieta rica em concentrado. A taxa de passagem do líquido ruminal foi avaliada em ambos os níveis de ração. A população de protozoários do rúmen foi monitorada semanalmente e, quando os animais se tornavam defaunados, […]