Fifty F1 Limousin x Nellore bulls were allotted to ten treatments, with five concentrate levels (25, 37.5, 50, 62.5, and 75%) and two diet protein balance methods (one isoprotein and the other changing protein as diet energy changed). The intake of dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fiber (NDF) and total digestible nutrients (TDN) were determined. After the slaughter, all animal body parts were weighed, sampled and DM, total nitrogen and ether extract concentrations were […]

Three blood constituents in eight crossbred Saanen goats bred in two systems ¾ pasture (S1) and semi-confinement (S2) ¾ were analyzed. The animals were fed two different diets: 30% of the dairy requirements of net energy supplied by concentrate during all the lactation (R1), and 60% of the requirements from 3rd to 13th week of lactation and 15% from 14th until the end of lactation (R2). Blood samples were taken to evaluate glucose (Gl), hemoglobin (Hb), and hematocrit (Ht) levels. […]

Fifty F1 Limousin x Nellore bulls were allocated in ten treatments, with five concentrate levels (25, 37.5, 50, 62.5, and 75%) and two diet protein balance methods (one isoprotein and the other changing protein as diet energy changed). Dry matter intake (DMI) required to maintain the energy balance was calculated dividing the metabolizable energy intake (MEI) required for maintenance (112.89 kcal/kg EBW0.75), by diet ME concentration (kcal/kg of DM), in each treatment. The net energy concentration for maintenance (NEm) of […]

This work was carried out to evaluate the intake and apparent digestibility of nutrients in the diet with four replacement levels of corn (0, 25, 50 and 75%) by forage cactus meal. Sixteen lambs, averaging 30 months age and live weight (LW) of 40 kg, were allotted to a completely randomized experimental design. There was no effect of levels of replacement on the intake of nutrients, that were restricted at 2.5% of LW. There was no effect of levels of […]

It was aimed to study the intake and total and partial nutrients digestibilities in bovine. It were used five 165 kg growing Nelore bulls, rumen, abomasum and ileum fistulated. A randomized blocks design with four treatments and five collection periods was used. The treatments consisted of four concentrate levels (20, 40, 60 and 80%). The roughage used was Tifton 85′ Bermuda grass hay (Cynodon dactylon (L.) Pers.). The NDF and ADF intakes only presented linear reduction with the increase of […]

The goal of this study was to evaluate the intake of nutrients and the total and partial apparent digestibility of sugar cane + citrus pulp (ScSCp), cassava hulls + citrus pulp (ChSCp) and cassava root + citrus pulp (CrSCp) silages. The basal diet with corn silage (CS) and soybean meal composed 60% of the total dry matter of ChSCp and CrSCp treatments. Four castrated crossbred (HxZ) steers were, canulated in the rumen and in the duodenum and confined according to […]

Twenty one crossbred yearlings Holstein-Zebu heifers, with average initial age and weights of 14 months and 245 kg, respectively, were used in the performance evaluation. For evaluation of the ruminal parameters and sampling of the consumed pasture, five Limousin x Nelore steers, fistulated in the rumen and esophagus and maintained in an extra pasture of Brachiaria brizantha cv. Marandu, were used to evaluate ruminal parameters, pasture intake and to collect pasture samples. The experiment was carried out during three experimental […]

It was aimed to evaluated the nutrients intake and digestibility of growing and finish Nellore bulls diets. It were used 32 non-castrated Nellore bulls, with 240 kg, confined in individual stalls, in the growing phase, and 16 animals with 360 kg in the finishing phase. The treatments were four concentrate levels (20, 40, 60, and 80%) and two percentages of crude protein (15 and 18%) in the diets. It was used an experimental design randomized, with four replicates, in the […]

It was aimed to evaluate intake, apparent digestibility and in situ degradability of dry matter (DM), crude protein (CP) and neutral detergent fiber (NDF) of coastcross and Tifton 85′ bermudagrass hays, and of diets with four concentrate levels for growing animals. The fecal production was estimated by means of internal markers, indigestible neutral detergent fiber (NDFi) and acid detergent fiber (ADFi), obtained after 144 hours of ruminal incubation. It were used eight months old bovines and 32 non castrated animals […]

This experiment was carried out with the objectives of determining the daily average intake (DAI), apparent digestibility coefficient (ADC) of oat hay and pea nutrients and to evaluate the nitrogen balance in sheep. Ten wethers with average weight of 36.64 kg, alloted to suitable cages, were used. A completely randomized design with two treatments (T1= 80% oat hay + 20% pea and T2= 60% oat hay + 40% pea) and five replicates, was used. The treatments were evaluated under two […]