To evaluate the effects from two lipid sources (soybean oil and coconut oil) and of four energy levels (3350, 3450, 3550 and 3650 kcal/kg ration) on performance from 60 to 100 kg boars, eighty animals were used. The experimental design of randomized blocks with a factorial arrangement of 2 x 4 (sources x energy levels), with five replications of two animals per box, was used. Experimental diets formulated on the basis of maize, soybean meal and vitaminic and mineral supplement […]

A serie of experiments was carried out with the objective to determine the nutritive value of nine poultry by-product meal and six feather meal for chickens. Four different methodologies were used to determine the values of N corrected apparent (AMEn) and true corrected (TMEn) metabolizable energy, where the traditional method was used with chicks and cocks and the Sibbald method was used with roosters and cecectomized cocks. The estimated AMEn and TMEn values of viscera meal ranged from 3,051 to […]

The aims of this work were to know the best age to feed poultry with sunflower meal (SM), to determine the best percentage of SM to feed animals in different ages and to evaluate economicall viability of SM as a feeding for poultry ration. In this experiment 480 three days old chicks were distributed in a randomized design. The experimental treatments consisted in rations with different percentages of SM (0, 4, 8 and 12%) and birds with different ages (I1= […]

One experiment was carried out using 120 laying Isa Brown chickens fed diets containing sugar-cane yeast, to determinate the methionine+cystine (met+cys) requirements. The birds were 51 weeks old at the beginning of the experiment, with the duration of 84 days, with three periods of 28 days each. A completely randomized block design with five treatments and four replications was used. The treatments consisted of a basal diet supplemented with five levels of DL-methionine in order to obtain diets with 0.45, […]

The research was carried out to evaluate the ileal (ILEALDC) and total (TOTALDC) digestibility of the starch and the activity of the enzymes amylase (ACAMY) and maltase (ACMAL) in rabbits of 35 and 45 days old, fed with starch from the corn or cassava. In each assay 20 New Zealand White rabbits were used, being ten males and ten females, housed individually in wire cages and distributed in an entirely random arrange. At the end of the experimental period, the […]

Similar to other living animals, the cells of the birds also synthesize small proteins (heat shock protein, Hsp), which increasing levels can be induce by stress. The Hsp have a relevant function in maintaining the integrity of the cell, and we question if they are involved in the mechanism of the cellular protection of target organs affected by ascites syndrome (AS). The objective of this study was to evaluate the body temperature, and the Hsp70 levels in the heart and […]

Twenty-one lambs of the Santa Ines and Bergamacia breeds were confined by a period of 75 days and fed diets containing 24% of swine wastes, in biju form (obtained by the scratching and sweeping of the floor of the growth stalls and termination) or dry sifted wastes – DSW (obtained through the sifting of the solid part of the material contained in the sheet of water and in the water of the wash of the stalls). The animals were slaughtered […]

Twenty-one lambs were used, nine of the Bergamácia and 12 Santa Inês breed, were confined individually for 75 days, and fed diets containing 24% of swine wastes, in the form of biju (obtained by the scratching and sweeping of the floor of the growth and termination stalls) or DSW – dry sifted wastes (constituted by the solid part of the material contained of the water of wash of the stalls, obtained through sieves of fine mesh). There was no diet […]

This study offers information on the morphology (in live and in carcass), commercial characteristics, components of the liveweight, quality of the carcass and meat in no castrated lambs derived from the crossing between Border Leicester rams and Corriedale and Polwarth ewes, grazing on native pasture in Rio Grande do Sul, Brazil. Twenty-four lambs slaughtered at 6.5 months of age were used, from which 11 were from Border Leicester rams x Corriedale ewes and 13 were from Border Leicester rams x […]

The experiment was conducted with the objective to evaluate the parameters of dry matter intake, weight gain, feed conversion and energy efficiency of young feedlot steers, fed with two diets that included the AG-2006 sorghum silage harvested with different cutting heights: low cut (14 cm) and high cut (45 cm). Twelve Braford calves with an average age of seven months and average live weight of 208 kg, were used. The feedlot period was 126 days, divided in two period of […]