The objective of this study was to assess the sward canopy structure of Brachiaria brizantha cv. Marandu pastures maintained in three grazing intensities under continuous stocking system during the rainy season, along with the behavior and performance of grazing beef heifers supplemented with mineral salt or an energy/protein supplement. Three levels of forage allowance were assessed: 2.0, 2.5 and 3.0 kg of forage/kg of live weight, combined with two supplements (ad libitum mineral salt, and an energy/protein supplement at 0.3% […]

Diets formulated with protein sources presenting different resistance to ruminal degradation were compared by evaluating ruminal parameters, production and microbial efficiency and nutrients flow to the omasum in goats. Eight rumen cannulated non-lactating, non-pregnant goats were distributed in a 4 × 4 Latin square design with two replicates. Treatments consisted of four diets where different sources of plant protein accounted for the major protein source named soybean meal, source of higher ruminal degradability, and three other sources of higher resistance […]

This experiment was carried out to evaluate the digestibility of the amino acids from corn, soybean meal and corn germ meal in cecectomized roosters and broilers. The experiment used sixteen Lohmann-LSL roosters with 45 weeks of age, 20 AgRoss 508 male broilers with 21 days of age and 20 other male broilers of same line, with 42 days of age, all of them cecectomized. A completely randomized arrangement with three animal categories (roosters; chickens at 21 and 42 days of […]

This experiment was carried out to evaluate the effect of supplementation of vitamins C or E in the diet on performance, carcass characteristics and hematological parameters of broilers kept under high environmental temperature. Four hundred and fifty broilers were distributed in a completely randomized design with five treatments and nine replications, with 10 and 7 birds per experimental unit, respectively, according to the periods from 1 to 21 and 22 to 42 days old. Treatments consisted of a basal diet […]

The objective of this study was to evaluate the quantitative carcass traits of lambs from different genotypes receiving different levels of energy in the diet. Fifty-four non-castrated lambs – 18 Santa Inês (SI), 18 F1Dorper × Santa Inês (Dp × SI) and 18 F1Santa Inês × No defined breed (SI × NDB) – of average 150 days old and 22.6-kg BW were used in the beginning of the experiment. Diets contained 17% crude protein and 2.40 Mcal/kg DM or 2.90 […]

The objective of this study was to evaluate the effect of the replacement of a ground corn diet by a forage cactus meal diet on the carcass characteristics and body components of Santa Inês lambs finished in feedlot. This study was carried out at Estação Experimental de Pendência, belonging to Empresa de Pesquisa Agropecuária da Paraíba S.A. (EMEPA-PB). Forty Santa Inês male lambs in feedlot were used in the experiment. Treatments were randomly assigned to the animals according to a […]

The objective of the present experiment was to evaluate the inclusion of sunflower meal in diets formulated on total or digestible amino acid basis fed to broilers of 22 to 42 days of age. Nine hundred and sixty birds were distributed in a completely randomized experimental design in a 2 × 2 factorial arrangement (two formulation criteria – digestible or total amino acids; two sunflower meal inclusion levels – 0 or 15%), with six replicates of 40 broilers each. Performance […]

This study was carried out to evaluate the influence of diets supplemented with glycerin as an alternative ingredient to corn on the performance and carcass characteristics of Santa Inês confined lambs. The study involved 27 lambs aged 90 days, having an average initial weight of 26.33 ± 0.15 kg. Lambs were randomly distributed into a control group and groups with diets containing 15 and 30% glycerin in the total feed. Diet was formulated with 40% roughage and 60% concentrate. The […]

The objective of this study was to evaluate the effect of the levels of replacement of ground corn by forage cactus meal in the diet on the muscularity and adiposity of carcass of Santa Inês lambs finished at feedlot. This study was carried out at Estação Experimental de Pendência, belonging to Empresa de Pesquisa Agropecuária da Paraíba S.A. (EMEPA-PB). Forty male Santa Inês lambs in feedlot were used in the experiment. Treatments were randomly assigned to the animals according to […]

The objective of this study was to estimate the optimum digestible lysine levels in diets for broilers on growing (22 to 35 days) and finishing (35 to 42 days) phases, based on economic analysis of food. Two experiments were conducted, each one using 600 Cobb 500 male broilers, distributed in a completely randomized design with five treatments and six replicates of 20 birds. Treatments consisted of increasing digestible lysine levels in the diet. The feed:gain relation data were submitted to […]