Abstract:
The body weight of young hens was within the
standard curve of the hybrid, but at its lower limit, because the poultries
had a great movement freedom, and the standard was allowable for battery
breeding. The peak of eggs yield was reached in week 28, but the level of
egg-laying intensity did not correspond to the potential of the hybrid (92-
94%), being only of 78.11%, due to objective factors. The egg yield/hen
reached the level of only 283.48 eggs. The specific fodder consumption was
correlated to the low egg yield (190.69 g/egg), while the average daily
consumption was higher than the normal one (110-120 g/head), being of
125.50 g/head. The rate of stock losses was influenced by the breeding
system, on permanent layer, being of 11.61%, in comparison with the value
of 94-96%, normal for the rate of stock preservation. We recommend this
hybrid breeding on permanent layer, observing the following conditions:
the use of young replacement hens, bred under the same system as adult
poultries; breeding the biological material, from the age of a day until the
end of the series; the increase in poultry denseness /surface unit, at 7-8
heads/m2 and the selection of young replacement hens at the moment of
acquisition.
