Performance of female broiler breeders submitted to different feeding schedules
de Avila, VS; Penz Jr., AM; de Brum, PAR; Rosa, PS; Guidoni, AL; de Figueiredo, ÉAP.
R. bras. Ci. avíc.;
5(3)2003.
Artigo
em Inglês
| VETINDEX
| ID: vti-717648
Resumo
The performance of Arbor Acres broiler breeders (1,296 females; 144 roosters) was evaluated when submitted to the following treatments (T): T1 = feeding at 6:30 a.m. (control); T2 = 50% feeding at 6:30 a.m. and 50% at 3:30 p.m. (dual feeding); T3 = feeding at 11:00 a.m.; and T4 = feeding at 3:30 p.m. Treatments were randomly distributed in 48 pens. There were 27 females and 3 males in each pen and 12 repetitions per treatment. Nutrition and management were as recommended for the commercial strain. It was evaluated age at first egg (AFE), total egg production (TEP), number of days with production above 80% (DAP80), laying peak (P), female mortality (MOR), and gross profit margin (GM) per hen. Data were submitted to analysis of variance and means were compared by Student's t-Test. TEP of T1 (186.3±2.3) and T2 (186.5±1.5) were higher (p 0.05) than that of other treatments. TEP of T3 (177.2±2) was the smallest (p 0.05), probably due to the less significant values of DAP80 (18.9±6.0 days) and P (81.36±0.95%). AFE was earlier (p 0.05) in T2 birds. Mortality was similar (p>0.10) among treatments. GM per hen was better (p 0.05) in T1 and T2 hens. Control and dual treatments were more efficient than other treatments. It was concluded that it is possible to change conventional feeding management's by the dual feeding system.
Biblioteca responsável:
BR68.1
Texto completo