Marcato, S. M. [UNESP]Sakomura, N. K. [UNESP]Munari, D. P. [UNESP]Fernandes, J. B.K. [UNESP]Kawauchi, Í. M. [UNESP]Bonato, M. A. [UNESP]2014-05-202014-05-202008-06-01Revista Brasileira de Ciência Avícola. Fundação APINCO de Ciência e Tecnologia Avícolas, v. 10, n. 2, p. 117-123, 2008.1516-635Xhttp://hdl.handle.net/11449/591The objective of this work was to study growth and body nutrient deposition profiles of male and female Cobb and Ross broilers using Gompertz equations. A total number of 1,920 one- to 56-day-old broilers were used. A randomized experimental design in a factorial arrangement (2 strains x 2 sex), with 4 replicates of 120 birds each, was applied. Diets were formulated to supply the nutrient requirements recommended by the genetic companies. A sample of birds was weekly weighed and sacrificed after 24 hours fasting. Carcasses were de-feathered and weighed again. The parameters of the Gompertz equation for body weight and its components (water, ashes, protein, and fat) were estimated. An interaction (p<0.05) between sex and breed was observed for mature weight (Wm) (kg), growth rate (b) (daily) and time at maximum growth rate (t*) (day) of body weight, and body water and ash. Cobb was presented earlier growth and body protein and ash deposition. Ross strain was superior in body water deposition.117-123engBody compositionbroilersgrowthGompertz curvesArtigo10.1590/S1516-635X2008000200007S1516-635X2008000200007WOS:000259783200007Acesso abertoS1516-635X2008000200007.pdf