Table 1 Scheme of scientific and economic experiment
Group
Source of
microelements
Microelement added to the ration, mg/kg
Mn
Zn
Fe
Cu
1
sulfate
100
100
40
15
2
glycinate
100
100
40
15
3
citrate
100
100
40
15
4
glycinate
75
75
30
11
5
citrate
75
75
30
11
The chicken broilers’ ration consisted of a full-ration mixed feed that
corresponded by the content of energy and basic nutrients to the standards indicated in
the relevant cross-recommendations [3].
The air temperature and lighting of the premises were in accordance with the
sanitary standards adopted in poultry farming. The density of placing the birds per head
was in accordance with the standards. Giving a drink took place with nipples based on
one nipple for 5 birds. Birds were drinking water and eating fodder ad libitum.
During the experiment, daily keeping of the consistence of bird livestock and
mixed feed balances, weekly – weight gain of birds and feed conversion were carried
out. The body weight was determined by individual weighing of young birds every
week on the weights of VTD-FD (F998-6ED) with an accuracy of 1 g.
The results of the research were subjected to the usual statistical data processing
procedures using the MS Excel software with applying the embedded statistical
functions (SRZNACH, STANDOTKLON, SEM, ТТЕСТ and ANOVA), analysis of
dependencies between the investigated factors and indicators – the construction of the
trend line, definition of the regression equation and the coefficient of reliability of
approximation (R
2
). In calculating the statistical authenticity, it was taken into account
that the indicator "p" is characterized as follows: *p<0.05, **p<0.01 – "Statistically
authentic (significant) differences have been revealed."
Broiler chickens were fed twice a day with full-ration mixed fodder that
corresponded with the need of birds of this very species, age and productivity type in
the energy content and the main nutritional elements. The composition of mixed feed
and the content of energy and nutrients of mixed feeds in it are presented in Table 2.
Mixed feeds were made at the mixed-feed plant “KreMiks”, Ltd. of the Poltava region.
Premix contained (with respect to 1 kg of combined feed): in 1-10 days of age:
Mn –– 100 mg, Zn – 100 mg, Fe – 40 mg, Cu – 15 mg, Se – 0.3 mg, I – 1.0 mg, Vitamin
A – 13 thousand IU, Vitamin E – 80 mg, Vitamin D
3
– 5 thousand IU, Vitamin K
3
– 4
mg, Vitamin B
1
– 4 mg, Vitamin B
2
– 9 mg, Vitamin B
3
– 60 mg, Vitamin B
4
– 400
mg, Vitamin B
5
– 15 mg, Vitamin B
6
– 4 mg, Vitamin B
12
– 0.02 mg, Vitamin В
c
– 2
mg, Vitamin H – 0.15 mg; in the 11-22-day age: Mn – 100 mg, Zn – 100 mg, Fe – 40
mg, Cu – 15 mg, Se – 0.3 mg, I – 1.0 mg, Vitamin A – 11 thousand IU, Vitamin E –
60 mg, Vitamin D
3
– 5,000 IU, Vitamin K
3
– 3 mg, Vitamin B
1
– 2 mg, Vitamin B
2
–
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