Journal of Food, Agriculture and Environment

Effect of mineral supplements on bioproductive performances on mixed breeds avian youth in organic system 

Author(s):

Călin Julean *, Dan Drinceanu, Lavinia Ştef, Eliza Simiz, Marian Bura

Recieved Date: 2013-01-14, Accepted Date: 2013-04-20

Abstract:

The experiment on the mineral supplementation of the feed used for mixed breeds avian youth was performed in concordance with the European Union legislation and applied the feeding and maintenance conditions specific to the organic system. According to the experimental organization scheme, an initial number of 150 chickens was randomly distributed in three experimental groups; in feed, we added a macroelement-based mineral premix, in a proportion of 3%, in G1, with sources of macro- and microelements, namely 20 ppm Fe, 40 ppm Mn, 40 ppm Zn, 3 ppm Cu, 0.25 ppm Co, 0.4 ppm I and 0.2 ppm Se in G2 and half of these doses in G3. By supplementing the feed for avian youth bred under organic system, with a mineral premix based on accepted mineral sources, in amounts that are adequate for slow growth, we observed an increase of the concentrated mixture ingestion with 6.11%, the body weight was significantly (p<0.05) influenced with 11.8% and the weight gain with 12.15%, while the conversion index decreased with 5.4% compared with the group fed without addition of microelements. Feed supplementation with half of the doses above (G2) provided a bigger ingestion, with 4.62%, a body weight that was not significantly (p>0.05) bigger with 7.3%, respectively, a bigger gain with 7.4% and a conversion index that was 2.7%-fold smaller that in the reference group, whose feed was not supplemented. The results prove the necessity of feed supplementation with microminerals in the mixed breeds avian youth bred in organic systems as well, but with levels adapted to the extensive breeding.

Keywords:

Mineral, avian youth, organic system, poultry nutrition

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Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 2
Category: Agriculture
Pages: 567-570

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