| dc.description.abstract | This study was conducted to investigate the effect of organic and inorganic
minerals, in broiler breeders Cobb®500. It was used 4 treatments: PI= 100% mineral
inorganic premix; PO= 100% mineral organic premix; PI+PO= 70% mineral inorganic
premix + 30% mineral organic premix and PI+Zn= 100% mineral inorganic premix,
except zinc mineral, that was 70% inorganic form and 30% organic form. The trace
minerals were: zinc, manganese, selenium, copper and iron, Iodine is added to the
inorganic salt in its state. Corn and soybean meal diets were used. 440 hens and 40
roosters with 51 weeks of age were used. The experiment was conducted between
51st and 65th weeks of age of birds. The production parameters and quality
parameters analyzed were: laying rate, hatching rate, egg weight, specific gravity,
embryonic mortality and quality progeny. The parameters of progeny analyzed were:
body weight gain, feed intake, feed conversion and mortality. The birds were housed
in an experimental house at Poultry Laboratory (LAVIC) of the Federal University of
Santa Maria with 20 floor pens of 4.61m2. The design was completely randomized
with four treatments and five pen replicates with 22 hens and two roosters each. To
evaluate the progenies two evaluations were performed of 1 the 21 days. Each
evaluation used 320 male chicks one day of age, from eggs produced with the arrays
of 55 and 60 weeks of age. For each evaluation, was adopted the same design used
in the evaluation of the broiler breeders, resulting in four treatments groups with 10
replicates of 8 males birds each. Under the conditions and time that the experiment
was conducted, the use of organic minerals had no significant effect (P>0.05) on the
parameters evaluated in the broiler breeders and progeny, during the study period.
Keywords: Zootechnical indexes. Minerals. Broiler breeders | |
