2008 Savremena poljoprivreda 57 1-2.indd - Poljoprivredni fakultet ...

„SAVREMENA POLJOPRIVREDA“ VOL. 57, 1–2 (2008) STR. 143–146, NOVI SAD
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A PHOSPHATE COMPOSITION WITH LOW DENSITY BORON
AS BORON SOURCE FOR POULTRY FEEDING
DAN DRINCEANU, LAVINIA ŞTEF, IOAN LUCA, DUCU ŞTEF,
GABI DUMITRESCU, CĂLIN JULEAN 1
SUMMARY: : There is more and more discussed about the functional role of the
boron in the animal organism, especially regarding the demineralization prevention
and bone mass loss. Because boron could become a regular nutritive supplement
in the monogastric animals’ diet we planned to establish the level from
which this trace element has no adverse effects. As boron source a composition
with low density boron was used, which according to the proposed invention brevet,
is part of a ternary P 2 O 5 – B 2 O 3 – Na 2 O. In the fabrication process of the product
a mixture of raw materials made of sodium tri-polyphosphate, di-ammonium
phosphate and boric acid, is subjected to a controlled thermic regime, followed
by expanding of the boron phosphate glass. Thus, a product is obtained having
a density of 200g/ dm 3 , which could be incorporated into vitamin-mineral premixes.This
product was tested in broilers’ feeding using descending level of boron
starting with 300 mg B/kg feed compound up to 20 mg B/kg feed compound. Two
broiler groups were formed in this experiment. A control group (LM) made of 40
chicken fed with compound feed according to ROSS 308 hybrid requirements and
an experimental group (LE) fed with the same compound feed supplemented with
0.4 g/kg boron phosphate glass, supplying 20 mg B/kg compound feed. Bio-productive
indices were determined, as well as Ca and P content of bones (tibia) was
performed colorimetric. It was established that a dose of 20 mg B/kg compound
feed signifi cantly infl uenced the bio-productive indices of broilers at 42 days of
age. Feed ingestion was 4.17 kg in LE group, 7.13% lower compared to LM. The
total gain of LE group was 2041.63 g, 2.3% higher than in LM group (1995.38
g/head). The feed conversion ratio in LE group was 2.04 compared to 2.25 in
LM group. Regarding the Ca and P content of the bones an increasing trend
was observed for both macro-elements. The average calcium content was 380.3
Original scientifi c paper / Originalni naučni rad
1 Prof. Phd. Dan Drinceanu Lecturer Phd. Lavinia Ştef,, Lecturer Phd. Ioan Luca, Lecturer Phd. Ducu Ştef,
Lecturer Phd Dumitrescu Gabi, Phd. Student Calin Julean, Banat’s University of Agricultural Sciences and Veterinary
Medicine, Calea Aradului 119, 300645 – Timisoara, Romania , email: ddrinceanu@yahoo.com
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