The objectives of this research were to analyse data on the international market of frozen boneless beef and to classify its participants into groups according to their trade relationships, identifying the main factors that influence the preference of a country to beef from a determined supplier country. International beef trade is composed of two markets: in one of them, the relationships between supplier and client depend on the lowest price, and Brazil is found in favorable conditions; and the other, […]

Different population sizes were simulated to estimate the phenotypic values in the selection assisted by markers for quantitative characteristics with heritability values of 0.10, 0.40 and 0.70. Cluster analysis with the phenotypic performance was carried out aiming at obtaining classification structure among the samples to optimize QTL detection. The genetic simulation system (Genesys) was used for the simulation of three genomes (each one consisting of a single characteristic whose distinction was the value of heritability), and the base and original […]

The discriminatory potential of n-alkanes in tropical grasses (Brachiaria brizantha Stapf. cv. Marandu, Cynodon dactylon Pers. cv. Coast-cross 1 and Panicum maximum Jacq. cv. Tanzânia 1) and legumes (Arachis pintoi Koprov & Gregory. cv. Amarillo and Glycine wightii Verdc.) was evaluated. The forages were sampled in Spring, Summer and Winter, with four replications per species per season. The n-alkanes C24 to C35, using C32 and C34 as internal markers, were considered in the analyses. Concentrations of n-alkanes in these species […]

To establish the measures that best define the quality of the carcass of swine, data of lean meat yield (MY), fat yield (FY), dressing percentage (DP), carcass length for the Brazilian Method of Carcass Classification (CLBM), carcass length for the American Method of Carcass Classification (CLAM), average backfat thickness (ABT), backfat thickness 4 cm from the dorsal mid-line (P1), backfat thickness 6.5 cm from the dorsal mid-line (P2), backfat thickness 8 cm from the dorsal mid-line (P3), loin eye area […]

The performance of two broiler breeder lines, developed by Federal University of Viçosa – UFV (M1 and F1) was tested against two mainly trade mark lines (C1 and C2), using methods of multivariate analysis for the evaluation of the genetic divergence. Four important economic traits were evaluated: age at sexual maturity (IMS), egg number (NO), average egg weight (PO) and body weight (PM), during three periods of the productive life of the birds: initial (25th to 32nd week of age), […]