Three assays were carried out to determine methionine + cystine requirement and the digestible methionine + cystine: digestible lysine ratio of males broilers, Avian Farms, from 1 to 20, 24 to 38 and 44 to 56 days of age. Each experiment was a completely randomized design with five levels of methionine + cystine, six replications and 20 birds per pen from 1 to 20 and 24 to 38 and 16 birds per pen from 44 to 56 day of age, […]

In order to estimate the (co)variance components, heritabilities and genetic correlations of longevity and herd life in females, informations of 56,413 births of females from a Nellore cattle herd, from 1950 to 2000, under different rearing and management conditions, were used. It was studied from calf: weaning weight (W205C), yearling weight (W365C), weight in 550 days (W550C), from cows: weaning weight (W205), yearling weight (W365) and weight in 550 days (W550), age at first calving (AFC), calving interval (CI), herd […]

Two experiments were carried out to study the effect of the normal (15%) or high (24%) starch level on the digestibility and performance in growing rabbits from four feeding patterns until weaning. For the digestibility assay, 96 White New Zealand from 35 to 49 days of age, were allotted to a factorial design 2x2x2 (two milk intake patterns versus two starch levels before weaning versus two starch levels in diet after weaning), with eight treatments and 12 replicates. Animals from […]

This work aimed to quantify the yield and nutritive value of elephantgrass (cv. Cameroon), in Lages, Santa Catarina, with the objective to identify possible limitations to its production and to show its viability in the region. The trial was carried out from 1982 to 1985, when the elephantgrass was established in plots in a complete block design. The treatments were the sum of growing days up to the evaluation day, in order to establish a growth curve. The accumulated dry […]

Two experiments of metabolism using broilers were carried out to determine the value for apparent metabolizable energy (AME) of soybean oil, the dry matter metabolization coefficient (DMMC), and the nitrogen retention (NR) in the isocaloric rations on two differents ages: growing phase (22 30 days old) and final phase (42 50 days old) and four inclusion levels of soybean oil: 0; 3.3; 6.6 and 9.9%. The experiments lasted eight days, with three days of adaptation period and five days for […]

Three assays were carried out to evaluate the nutritive value of the barnyardgrass seeds (Echnochloa spp.) for poultry. In the first assay, twelve adult cockerels were used to determine the true metabolizable energy value corrected by nitrogen retained (TMEn), using the forced fed method. In this assay six cockerels were forced fed 30 g of the feed and six cockerels were fastened to determinate metabolic and endogenous losses. In the second assay, twelve cecectomized cockerels were used to determine the […]

This work aimed to investigate the effect of broilers age in the digestibility of nutrients in extruded and toasted full fat soybean (EFFS and TFFS) and soybean meal plus oil (SMO), and in the production of digestive pancreatic enzymes. Five digestibility assays were carried out with broilers of one, two, three, four , and six weeks of age. Total collected excreta methodology was applied. The activities of amylase and pancreatic trypsin enzymes increased linearly with the broilers age, as well […]

The present work aimed to evaluate foals growth of the Mangalarga Marchador breed, by linear measures. Ninety-eight foals, 55 males and 43 females were measured at birth and at each 30 days up to 12 months age. Results of body measures were submitted to analysis of variance and statistical model includes effects of sex, local, nutritional management, herd, month and year of birth. Conformation characteristics studied were not influenced by the effects of sex, herd, nutritional management, month and year […]

This work was undertaken to evaluate of dietary energy and energy: crude protein ratio on performance and carcass quality of broiler chicks in the pre-starter and starter phases. Were used 900 one day old male broiler chicks, weight of 41 g, allotted in a completely randomized design in 45 boxes, in factorial 3 X 3, with three ME levels (2,850; 3,000 and 3,150 kcal) and three ME: CP ratio (125.0, 136.9 and 151.5 kcal/%CP), resulting in nine treatments with five […]

Twenty sheep were allotted in metallic crates during 15 days, to determine the effects of different levels of poultry litter on consumption and nutrient digestibility, nitrogen balance and on the major elements apparent availability. The animals were distributed in four treatments in a blocks design, with five replicates. Tifton 85 (Cynodon spp) hay was the forage source and poultry litter was composed of chopped corn cobs and coffee hulls in the ratio of 1:1. The diets were isoprotein with four […]