The objective of the present study was to evaluate the effect of dietary crude protein (CP) levels and the use of a nutritive solution via drinking water on the performance of pre-starter broilers. A total of 1,224 male Avian Farm chicks, from one to 40 days of age were used. Birds were distributed in a completely randomized experimental design with a 3 × 2 × 2 factorial arrangement, consisting of three initial body weights (low: 41 g, standard: 45 g […]

The objective of this study was to verify the existence of genetic variability among accessions of Arachis repens based on vegetative morphological characters, identifying those which contribute least for distinction of those accessions. Nineteen accessions were evaluated in a completely randomized design with ten replicates, established in 4-m2 plots. The traits evaluated were: basal leaflet length, basal leaflet width, apical leaflet length, apical leaflet width, petiole length, internode average length and internode diameter. The data obtained were submitted to univariate […]

The objective of this study was to analyze variability, linear and spatial correlations of forage dry mass yield (FDM) and dry matter percentage (DM%) of Brachiaria decumbens with the bulk density (BD), gravimetric (GM) and volumetric (VM) moisture, mechanical resistance to penetration (RP) and organic matter content (OM), at depths 1 (0-0.10 m) and 2 (0.10-0.20 m), in a Red Latosol (Oxisol), in order to select an indicator of soil physical quality and identify possible causes of pasture degradation. The […]

In this experiment, the effects of digestible lysine levels on performance, nitrogen balance and fat digestibility in Lohmann LSL hens 16 to 25 weeks of age were evaluated. Four levels of digestible lysine (0.6, 0.7, 0.8 and 0.9% in ration) were assessed by utilizing 160 16-year-old laying hens 16 to 25 weeks of age. The diets were isonutritive with 17% CP and 2800 (pre laying) and 2750 (pre peak) kcal/kg. A completely randomized design was used with four lysine levels […]

The objective of this study was to determine the age at puberty and sexual maturity and its relationship with body weight and testicular measurements in Simmental young bulls raised under pasture conditions in a tropical climate. Forty-four young bulls at 1 to 30 months of age were used. Body and testicular measurements were made monthly and ejaculates collected fortnightly, from six months of age by using the method of electroejaculation. Age at puberty was 13.42 ± 3.02 months and sexual […]

The objective of this study was to evaluate the effects of stalk/leaf ratio and the stage of maturity on the digestibility of the corn plant. Hybrids AG1051, AG4051, AG5011, DOW2B710, DOW2C577, DOW2A525, NB7315 and P30F90 were used, harvested at the one-half milk line (½ ML), three-quarters milk line (¾ ML) and black layer (BL) stages. A randomized block design was used in an 8 (hybrids) × 3 (stages of maturity) factorial design, with three replications. The means generated were used […]

The objective was to evaluate body weight, leg weight and morphologic aspects of the muscle fibers of the flexor hallucis longus muscle and electrophoretic profile of myosin heavy chain of four strains of broilers, reared in confinement and semi-confinement systems. 1440 chicks were randomly assigned in a 4 × 2 factorial arrangement: four strains (Ross 305, Master Gris, Label Rouge and Vermelhao Pesado), two production systems (confinement and semi-confinement), with four replicates for each treatment. Four birds were sacrificed for […]

The aim of this study was to evaluate the production costs and economic return of soybean husks (CS) associated with two non-protein nitrogen (NNP) sources, in feedlot finishing lamb. Eighty (80) Suffolk cross lambs, averaging initial age of 79 ± 6 days and initial live weight of 23.11 ± 1.78 kg were used. The animals were grouped in four experimental lots accordingly to NNP source: conventional urea group (CUG, n = 20), which received 1% of common urea; protected urea […]

The study assessed performance, microbial protein synthesis, intake and digestibility of nutrients by beef heifers receiving levels of multiple supplements or nitrogen salt, in a self-controlled intake, on pasture, during the dry season. Thirty-five beef heifers, from 6 to 9 months of age and average initial body weight of 203.4 + 4.5 kg, were used. Study factors were: control – mineral mixture; nitrogen salt – 50% of urea + mineral mixture, at proportion of 1:1, and 50% of corn (75% […]

This research was conducted to evaluate the voluntary intake, the apparent digestibility and the nitrogen balance in sheep fed with diets containing palm kernel cake. The addition of palm kernel cake was assessed at the 0; 20; 40; 60 and 80% levels replacing the elephant grass silages by utilizing 20 castrated male sheep in a completely randomized design. In all the forms they were expressed, intake and digestibility of nutrients showed quadract effect at the levels of palm kernel pie […]