In three years of research, 223 purebred Nelore and crossbred Canchim × Nelore, Angus × Nelore and Simmental × Nelore calves received either mineral mixture or 3 kg/animal/day of a concentrate, containing 18.8% crude protein and 81.5% total digestible nutrients, on a dry basis, while in a rotational grazing of Cynodon dactylon cv. Coastcross, fertilized pastures. Available forage (kg dry matter/ha) was different for paddocks of cattle receiving mineral mixture (2,961 kg) from those receiving concentrate (3,383 kg). However, forage […]

The effect of corn feeding forms in multiple supplements on performance of finishing steers grazing signal grass (Brachiaria decumbens Stapf) during rainy season was evaluated. Sixteen crossbred steers with initial weight of 384 kg and 18 mo old were distributed to four supplements mineral mix (MM) (control) and three multiple supplements with different feeding forms of corn: ground corn (GC); ground ear-corn (GEC) and ground whole-plant corn (GWPC) – in a completely randomized experimental design with four replicates. The animals […]

The objective was to propose and validate a bicompartimental sub model to estimate the apparently digestible crude protein fraction (CPad) in feed offered to cattle in tropical conditions. The two theoretical compartments used as basis for the sub model were crude protein from cell content (CPCC) and crude protein from cell wall (CPCW). Feed content of neutral detergent insoluble protein (NDIP) was used as an analytical approach for CPCW. Evaluations of true digestible fractions of CPCC and CPCW were based […]

The objective of this work was to evaluate the silage produced from signal grass intercropping with corn or in exclusive culture and harvesting at 100, 120, 140 and 160 days after sowing. Productions of dry matter (DM), crude protein (CP) and total digestible nutrients (TDN) were evaluated. It was also evaluated, the quality characteristics as contents (%DM) of CP, NDT, non-fibrous carbohydrates (NFC), neutral detergent fiber (NDF), ammonia nitrogen, butyric acid, lactic acid and pH, these silages. DM content was […]

This work aimed to estimate the carbohydrate fractions in three sunflower (Helianthus annuus L.) cultivars in the presence or absence of irrigation, using the Cornell Net Carbohydrate and Protein System (CNCPS) equations. The utilization of a fibrous preparation called cell wall (CW) in the CNCPS equations instead of neutral detergent fiber (NDF) showed no differences in the B1 and C fractions; however, there were differences in the A and B2 fractions. Because estimates of B1 fraction were lower than wet […]

The effect of feeding, in the rainy season, multiple supplements formulated with different sources of protein on nutritional characteristics of growing beef cattle was evaluated. Five Holstein-Zebu crossbred steers with initial live weight of 300 kg, fistulated in the esophagus and in the rumen, were assigned to five paddocks (0.3 ha) of Brachiaria decumbens in a 5 × 5, incomplete Latin square design, with 5 supplements and 4 periods in 4 (14 days). Supplements evaluated were based on soybean meal […]

Linear regressions were developed to estimate the chemical empty body composition of cattle from three genetic groups (Caracu, CaS; Selected Nellore, NeS; and Control Nellore, NeC) using the physical and chemical compositions of the 9th-10th-11th rib section. Fifty six intact males (20 CaS, 20 NeS and 16 NeC) were slaughtered at 20-24 months of age. The content of water, protein, ether extract and ashes were determined in rib section and on samples obtained after grinding and homogenization of all body […]

The present work aimed to estimate the individual intake of dry matter, concentrated and forage for animals feed in group. Evaluate also, dry matter intake, average daily gain and feed conversion ratio by animals from one of three genders (bulls, steers or heifers) fed individually or in groups, with two levels of concentrate offer (1.00 or 1.25% of BW), and carcass traits of confined Nellore cattle. Forty five Nellore cattle – 15 bulls, 15 steers and 15 heifers were used. […]

The objective was to evaluate the culture of signal grass and soybean intercropping or in single cultures on the production of dry matter (DM) and crude protein (CP) and total digestible nutrients (TDN) per ha. It was evaluate, also, contents of CP, neutral detergent fiber (NDF), lignin (LIG), non-fibrous carbohydrates (NFC), NDT, butyric acid and lactic acid, ammonia nitrogen, the content of DM and pH of these silage cultures harvested in two phenological stages (R6 and R7) of the soybean […]

With the objective to evaluate the performance, voluntary intake and nutrient digestibilities, 24 NDB (no defined breed), non castrated male lambs with 20 ± 3.25 BW initial and 4.6 ± 0.8 months old were used. Animals were kept in feedlot and fed diets with babassu meal (0, 10, 20 and 30%) in substitution to Panicum maximum Jack hay. The diets, isoprotein and isonitrogenous, were fed in a complete mix ration. A completely blocks randomized design, with four treatments and six […]