Revista Brasileira de Ciência Avícola | |
Growth and body nutrient deposition of two broiler commercial genetic lines | |
Sm Marcato2  Nk Sakomura2  Dp Munari2  Jbk Fernandes1  Ím Kawauchi2  Ma Bonato2  | |
[1] ,UNESP FCAV Post-Graduation Program in Animal ScienceJaboticabal SP | |
关键词: Body composition; broilers; growth; Gompertz curves; | |
DOI : 10.1590/S1516-635X2008000200007 | |
来源: SciELO | |
【 摘 要 】
The 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.
【 授权许可】
CC BY
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO202005130162796ZK.pdf | 331KB | download |