Еffectiveness of use of active yeast in bird feeding on qualitative indices of eggs
Keywords:
hens, combined feed, amino acid composition of Saccharomy cescerevisiae, productivityAbstract
The results of the studying of active
yeasts Saccharomy cescerevisiae influence on
the egg-laying capacity and morphological
characteristics of the hens "NOVOgen brown"
breed eggs are presented. The nutritional
intervention of active yeast Saccharomy
cescerevisiae in laying hens diet allowed to increase
egg-laying capacity by 3.7–6.6 % and improve the
morphological composition of the eggs. However,
feed conversion in experimental groups was by
5.1–7.9 % lower in relation to the control group.
The feeding of experimental hens was carried out
twice a day with complete combined feed. The
poultry was kept in triple- deck cages. During the
study period, which continued 180 days, all groups
received complete combined feed mainly from
cereal. Troughs of all experimental hen groups were
disconnected from the general automatic delivery
line and the feed was given by hand. The age of the
birds in the scientific and economic experiment
was 300 days. The results of the determination of
the chemical composition of active yeast showed
that they contain raw protein 46.77% (by Kjeldahl
method) and 41.64% (by Barstein method),
non-protein nitrogen 5.13%, raw fat – 2.96%.
As a result of the research it was found that the
level of exchange energy in 1 kg of active yeast
Saccharomy cescerevisiae was 1.097 MJ. The amino
acid composition of active yeasts (Table 3) was
characterized by the advantage of nonessential
amino acids such as glutamic acid (14.5%), aspartic
acid (8.09%) and essential amino acid as leucine
(9.2%), lysine (8.9%), phenylalanine (8.63%),
isoleucine 5.6%), threonine (5.5%) and serine
(5.3%)
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