Nutritional effects of two levels of L-glutamic acid (L-Glu) combined with four levels of vitamin K (vit. K) in serum and the liver of chicks of day-old broilers, male, Hubbard, raised in brooded batteries, receiving basic purified diet supplemented with 6.25 and 12.5% of L-Glu combined with 0.02, 0.2, 2.0 and 20.0 mg vit. K/kg. Two hundred and fifty birds were allotted to completely randomized design an in 2 × 4 factorial arrangement, with four replications of eight birds each. […]

The experiment was carried out to determine digestible methionine + cystine: digestible lysine (Met + Cys/Lys) ratio for barrows selected for deposition of lean meat in the carcass supplemented with ractopamine (RAC) in the finishing phase. Sixty-four barrows with 84.68 ± 1.34 kg BW was allotted to an experimental randomized block design, fed diets containing four Met + Cys/Lys ratio (0.54, 0.58, 0.62 and 0.66) supplemented with ractopamine, eight replications, during a period of 28 days. Met + Cys/Lys did […]

Eighty barrows, commercial hybrids of high genetic potential for lean meat deposition in the carcass, were used to evaluate the effect digestible tryptophan levels for pigs from 97.0 ± 2.81 to 125.0 ± 3.31 kg. A randomized experimental block design was used, with five treatments (0.124; 0.133; 0.142, 0.151 and 0.160% of digestible tryptophan, corresponding to digestible lysine ratio of 16.5, 17.7, 18.9, 20.1 and 21.3%), each one with eight replications of two animals. Diets and water were supplied ad […]

Two experiments were carried out to evaluate the use of two methionine sources (powder or liquid) in diets based on total and digestible amino acids for white and brown growing pullets at starter phase (1 to 6 weeks old) and grower phase (11 to 16 weeks old). In each experiment, 384 birds were distributed to a completely randomized design in a 2 × 2 × 2 factorial arrangement, composed of bird strain (Hy-Line W36 and Hy-Line Brown), source of methionine […]

The objective was to evaluate the performance of growing- finishing pigs fed diet with coconut meal. Twenty crossbred Large White × Landrace barrows with initial 19.7 ± 2.9 kg BW and final 89.2 ± 5.8 kg BW were allotted to complete a randomized blocks design with four levels (0, 10, 20 or 30%) of coconut meal and five replications. Performance traits, as average daily weight gain, average daily feed intake and feed conversion ratio in grower phase (65 to 107 […]

The effects of temperatures of extrusion process on characteristics of nitrogen and carbohydrates fractions, ether extract, in vitro protein digestibility and trypsin inhibitor factor of soybean and corn. The experiment was conducted in a completely randomized design, with three replicates in a 5 × 4 factorial arrangement, with five combinations of soybean and corn (100% soybean, 75 soybean and 25 corn, 50 soybean and 50 corn, and 25 soybean and 75 corn, 100% corn, %DM) and four temperatures of extrusion […]

The aim of this work was to evaluate, the replacement of ground or extruded corn by sorghum ground or extruded in the concentrate used in diets for equines. Four mares with an average weight of 450 kg and 24 months of age, non-defined breed were distributed to a 4 × 4 Latin square experimental design in a 2 × 2 factorial arrangement (ingredient – corn and sorghum × processing form – ground and extruded). Apparent digestibility of total diet and […]

The objetive of this research was to study the eating behavior of lactating Holstein cows grazing mixed species of elephant grass (Pennisetum purpureum Schum.), ryegrass (Lolium multiflorum Lam.) and others spontaneous growth species. As differential of these pastures, was introduced white clover (Trifolium repens L.) or peanut forage (Arachis pintoi Krapov. & Greg.). Grazing eating behavior evaluations were taken on July, August and October of 2005. In each grazing eating behavior evaluation, six cows, between the second and fifth month […]

Carcass traits of culling ewes from Texel and Polwarth breeds submitted to two feeding systems were evaluated. Twenty ewes (10 from Polwarth breed and 10 from Texel breed) were randomly distributed according to its genetic group, in two feeding systems (feedlot and cultivated pasture). The slaughter was carried out when the animals reached body condition score of 3.5 points. Hot carcass (HCW) and cold carcass (CCW) weights and hot carcass (HCD) and cold carcass (CCD) dressing of Texel ewes were […]

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 […]