UDC: 636.52/.58:635.085.1
DOI: 10.36871/vet.zoo.bio.202307011
Authors
Olga N. Degtyareva,
Marya S. Tishenkova,
Federal Scientific Center «All-Russian Scientific Research and Technological Institute of
Poultry Farming», Sergiev Posad, Russia
Abstract
For the first time, experiments were conducted on meat chickens, which showed the possibility
of excluding fish meal from the recipes of mixed feeds, with 5 % reduced levels of lysine (in the
form of sulfate), methionine (in the form of methionine hydroxyanalog) and metabolic energy relative
to the recommendations. The chickens of the experimental groups received similar rations with
the replacement of fish meal with soy processing products (group 2), sunflower processing products
(group 3) and soy and sunflower processing products in a ratio of 50:50 (group 4). The productivity
of a bird by 40-50 % is determined by the intake of energy into its body, and its lack is a more common
cause of low productivity compared to other nutrients.
It was found that the use of lysine in the form of sulfate and methionine in the form of its hydroxyanalog
in compound feeds for meat chickens did not have a negative impact on incubation
indicators and egg quality, which allows for high safety, productivity of poultry and an increase in
the yield of daily young while reducing incubation waste.
Keywords
cornish, plimutrock, meat chickens, egg production, hatchability, withdrawal
