This trial was carried out to evaluate forage mass (FM), daily accumulation rate (DAR), forage offer (FO), stocking rate (SR), Arachis pintoi percentage (APP), average daily gain (ADG) and gain per hectare (GPH) of beef heifers under grazing in Coastcross-1 and Arachis pintoi mixed pasture during different seasons, from July 2003 to June 2004. The treatments were: CA0 = Coastcross + Arachis pintoi without N; CA100 = Coastcross + Arachis pintoi with 100 kg of N; CA200 = Coastcross + […]

The objective of this work was to evaluate the sward structure and nutritive value of Panicum maximum Jacq. cv. Tanzânia subjected to rotational stocking managements characterised by a common pre-grazing condition of 95% canopy light interception (LI) and two post-grazing residues, 25 and 50 cm. Treatments (95/25, 95/50 – LI/residue) were assigned to experimental units (groups of six 2500 m2 paddocks per treatment) according to a complete randomised block design, with two replications. The variables measured corresponded to: canopy light […]

The objective of this work was to evaluate differences between silages produced from exclusive cultures or intercropped with corn and signal grass cultures in different sowing arrangements (two lines of signal grass in the corn inter-lines and hand-sowed signal grass in the corn inter-lines) The production of dry matter (DM), crude protein (CP) and total digestible nutrients (TDN) for area was evaluated, as well as the qualitative variables of DM in the silages including CP, TDN, NDF, LIG, NFC, NH3, […]

The objective of this work was to evaluate the effects of different compaction degrees, inclusion of absorbent additive and wilting on the chemical composition of tanzania grass silages. The experiment was conducted using tanzania grass (Panicum maximum Jacq. cv. Tanzânia I) harvested at 60-65 days of growth. The forage was ensiled in experimental PVC silos fitted with Bunsen type valves, with capacity for about 4 and 8 kg each. The treatments consisted of three types of silages (control, 5% of […]

One hundred ninety two swine were used in a trial to assess the relative bioavailability of phosphorus (RBP) in six phosphate sources. Phosphates were three feed grade phosphates (FP), two made in Brasil, and one USA made, and three rock phosphate samples (RP) originated from two mines sites in Brasil, and one mine site in Israel. Levels of calcium, phosphorus and fluorine in RP were 29, 12 and 1.7% (RP source 1), 33, 14 and 1.4% (RP source 2), and […]

The intake, the apparent digestibility of nutrients and the ingestion behavior of four Holstein steers with average weight of 300 kg and 20 months of age, receiving diets containing Tifton 85 hay with different particle sizes (5, 7, 10 mm and whole) were evaluated. A 4 × 4 Latin square experimental design with four steers and four periods was used. Intakes of dry matter, organic matter, crude protein, ether extract, neutral detergent fiber, acid detergent fiber, total carbohydrates and non-structural […]

The objective of this work was to evaluate the chemical characteristics of the whole plant and the leaf and stem fractions of signal grass in different sowing arrangements to determine the productive performance of the corn/signal grass intercrop. The production of dry matter (DM), crude protein (CP) and total digestible nutrients (TDN) per area was evaluated, as well as the concentration of CP, digestible crude protein (CPD), neutral detergent insoluble crude protein (NDICP), neutral detergent fiber (NDF), lignin (LIG) non-fiber […]

This trial had the objective of characterizing the microbial population and evaluating the aerobic stability of Marandu grass silages with pelleted citrus pulp (PCP). The collected forage was submitted to the following treatments: Silage of Marandu grass; silage of Marandu grass + 50 g/kg PCP and silage of Marandu grass + 100 g/kg PCP on natural matter basis. Metal cylindrical containers with 80 cm of height and 50 cm of diameter were used as silos during assays of microbiological dynamics […]

To assess the reproductive performance of beef cows submitted to estrus induction/synchronization, 42 Aberdeen Angus cows with body condition 3 (1-5 scale) under extensive management were used. The milk production was estimated through the weight-suckling-weight method. For gynecological examinations, ultrasound equipment and trans-rectal palpation were used. The milk production level (above and below the average production of cows), pregnancy, prebreeding reproductive condition (CRPA), surface anoestrus (uterine tone, follicles > 10 mm and absence of CL) and deep anoestrus (no uterine […]

The commercialization process of 1.757 lots of calves was evaluated, totaling 28.495 animals, including the order and time of permanence in track, the divulgation strategies to the buyers and uniformity of the lots, as well as the final price (R$/kg WL) and number of biddings. The model proposed was efficient in showing unfavorable scenarios for the breeding activity, and in periods of great offer of calves and low prices, the studied variables can influence the final price per kilogram of […]