Influence du mode d’éclairement alimentation sur les performances zootechniques du poulet de chair Hubbard ISA 15 élevé en Algérie

Abstract

The trial evaluated the growth and the consumption index of broilers resulted

in two different planes of lighting-feeding. It took place during 56 days between

February and April, on a total of 36540 subjects Hubbard-ISA 15, divided into

two groups, 17830 subjects for control and 1870 for experimental. Body

weights of animals to the implementation was identical (44 ± 0.08 and 43 ± 0.13

g) (P> 0.05) were raised in two buildings of the same type. A non-restrictive plan

lighting- feeding, open access to the feeder was applied to the control, while

that of the experiment was restricted type with dietary restriction caused by a

reduction of the illumination time (1165 vs. 1045 hours). The rest of the

breeding condition is identical. Food distributed as refusals are quantified and

animal performances are evaluated. The light-diet plan tested had an effect on

the time spent at the feeder and a gain in the illumination time -106 hours. This

has resulted in a reduction in the consumption of -850 g / subject, and indices

of low consumption in the experimental (P <0.0001). These performances with

positive incidence on the cost of production in the experimental group, suggest

the slaughter of broilers at least the 40 days age and 50 days at the maximum.