The effects of calving year and season, property, sex of the calf, feeding regime, age of calf and age of dam at calving, maternal and direct additive effects of Charolais breed, and maternal heterosis effects among Charolais and zebu breeds were evaluated by the method of least squares on economical importance traits such as weight, scrotal circumference and visual scores for slaughter conformation, navel score and hair coat at weaning of the Canchim breed. Data from 12,334 Canchim calves born […]

Different levels of genomic significance were used in assisted selection by markers to estimate the phenotypic value, the number of markers used in the selection and the percentage of favorable and unfavorable alleles fixed in a quantitative characteristic. A comparison among the levels 0.5; 1; 2; 4; 6; 8; 10; 12; 14; 16; 18 and 20 was done by using the computer system of gene simulation (GENESYS), used for simulation of a genome consisted of a quantitative character with heritability […]

The objective of this study was to implement an indicator system that allows an overview of the performance at all levels of the company and to evaluate its overall performance using a consolidate general indicator. In the company studied, three business sectors were identified (crops, beef cattle production and viticulture) in addition to management sector, to which strategic objectives were determined. After that, it was mapped the macroprocesses that compose each business activity, a total of 14, and the critical […]

Two experiments were conducted to evaluate the performance, the energy and nutrient balance and economic viability of production of growing pigs fed diets with reduced levels and phytase. In experiment 1, 60 barrows and gilts (initial weight 25 ± 1.72 kg) were housed in a randomized block design with three diets, ten replicates and two animals per experimental unit (one male and one female). One of the diets was formulated with a reduced level with phytase and evaluated in comparison […]

The objective of this work was to determine macromineral requirements by Zebu steers grazing Brachiaria decumbens supplemented with concentrate. It was used 24 non-castrated steers, at an average age of 7 months and at initial average weight 180 kg. Eight control animals were slaughtered for determining initial body composition. The 16 remaining animals were divided in four four-animal plots, in a complete random design. Each plot received mineral mixture or supplements at the levels 0.75; 1.50 or 2.25 kg/animal/day. The […]

This study was carried out with the objective of evaluating the influence of breed groups and sexual conditional on carcass traits of young goats raised in feedlot. It was used 91 animals, 52 males and 39 females, belonging to five breed groups: Alpine, ½Boer + ½Alpine, ½Nubian + ½Alpine, ¾Boer + ¼Alpine and ½ Anglo-Nubian + ¼Boer + ¼Alpine. On the slaughter day, the shrunk weight was measured after 24 hours of solid fasting. Biometric and carcass measures were objectively […]

It was used 72 pigs, 36 castrated males and 36 females, with initial weight of 14.97 ± 0.36 kg to evaluate levels of dietary available phosphorus (aP). The animals were distributed in a completely randomized block design, with six levels of aP (0.107; 0.214; 0.321; 0.428; 0.535 and 0.642%), six replicates and two animals (one castrated male and one female) per experimental unit. Air temperature and relative humidity in the room were kept at 24.5 ± 1.2°C and 76.3 ± […]

Polynomial functions of age of different orders were evaluated in the modeling of the average growth trajectory in Santa Ines sheep in random regression models. Initially, the analyses were performed not considering the animal effect. Subsequently, the random regression analyses were performed including the random effects of the animal and its mother (genetic and permanent environment). The linear fit was lower, and the other orders were similar until near 100 days of age. The cubic function provided the closest fit […]

The objective of this study was to determine the quality and composition of fatty acid in the lipid fraction of silages obtained from the residue of tilapia processing. Stratification of the lipid layer of the silages occurred at different times among the two types of silage (acid and fermented) and the greatest volume of oil was observed in acid silage (8.67% p/p). Although acid silage was more oxidized, it showed lower contents of free fatty acids probably because the degree […]

It was evaluated the chemical composition and energy values of slaughterhouse by-product meal for male Japanese quails (Coturnix coturnix japonica). It was used 320 male quails at 32 days of age, distributed in a complete random experimental design, with five diets (one reference diet and four test diets), each one evaluated with eight replicates with eight birds per experimental unity. Meals replaced 25% of the reference diet and their metabolizable energy values as well as their metabolizability coefficients were determined […]