The influence of organic and inorganic Fe supplementation on productivity of broilers | Uticaj organski i neorganski vezanog gvožđa na proizvodne rezultate brojlera

The aim of this study was to investigate the influence of organic and inorganic Fe supplementation on productivity of broiler chickens. The trial was conducted on 200 Arbor Acres chickens divided into four equal groups. Birds from all groups were fed standard broiler feed, supplemented with 40 mg/kg of Fe originating from different sources: Group I (FeSO4), Group II (Fe bound to yeast), Group III (ferrous ascorbate) and Group IV (iron chelate). From each group, 10 birds were sacrificed on the 21st, 35th and 42nd day and the following parameters were measured: body mass, daily body mass gain, food consumption and conversion rate. At the end of the trial, the highest average body mass was measured in the group supplemented with ferrous ascorbate (15,51% higher when compared with the group supplemented with FeSO4). The conversion rate was lower in birds supplemented with organic iron forms and had the lowest value in the group supplemented with ferrous ascorbate.

U ovom radu su prikazani rezultati ispitivanja uticaja organski i neorganski vezanog gvožđa u ishrani brojlera na telesnu masu, konverziju hrane i dnevni prirast. Ogled je izveden na ukupno 200 brojlera podeljenih u četiri jednake grupe. U smeše za ishranu brojlera dodavano je gvožđe u količini od 40 mg/kg koje je poticalo iz različitih izvora: fero-sulfat (ogledna grupa I), gvožđe vezano za kvasac (ogledna grupa II), fero-askorbat (ogledna grupa III) i helatno gvožđe (ogledna grupa IV). Kod piladi u dobi od 21, 35 i 42 dana praćeni su sledeći parametri: telesne mase, prosečan dnevni prirast, dnevno konzumiranje hrane i konverzija hrane. Veću prosečnu telesnu masu imala su pilad koja su hranom dobijala organski vezano gvožđe u odnosu na pilad u čijoj je ishrani korišćeno neorganski vezano gvožđe (fero-sulfat). Konverzija hrane je bila bolja kod piladi tretiranih organskim oblicima gvožđa u odnosu na pilad tretiranu fero-sulfatom. Najbolju konverziju imala su pilad koja su hranom dobijala fero askorbat.