DOI 10.36461/NP.2024.69.1.018
UDC 636.5.033.085.2

PRODUCTIVE QUALITIES IN BROILER CHICKENS DEPENDING ON THE PROTEIN AND METABOLIC ENERGY LEVEL IN COMPOUND FEEDS
D.G. Poghosyan, Doctor of Biological Sciences, Professor; M.N. Rybalko, post-graduate student
Penza State Agrarian University, Penza, Russia, tel. 8(8412) 618151, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

The meat productivity of broiler chickens in the predominant mass depends on the nutritional value of the compound feeds used for fattening. The aim of the study was to find the optimal level of crude protein content, of metabolic energy and energy-protein ratio in each age stage of fattening, taking into account its duration when fattening broiler chickens of the ROSS-308 breed. The research and production experiment was conducted on broiler chickens aged 0-39 days, manned in five groups of 100 heads each. The differences between the groups was in the use of compound feeds of different protein and energy nutritional value in three stages of fattening. The content of crude protein in compound feeds of different groups, depending on the growth stage, ranged from 20 to 27%, and the metabolic energy from 297 to 320 kcal.
Based on the results of the dynamics studies of live weight and liveability of chickens, feed conversion and slaughter indicators, it can be considered that a three-stage feeding scheme using compound feeds with an optimal level of crude protein and metabolic energy in the first stage of fattening at the level of 23% and 305 kcal is more effective for fattening broilers up to 39 days of age, in the second 22.7% and 313 kcal and in the third 20% and 320 kcal.
Keywords: broiler chickens, protein, metabolic energy, energy-protein ratio, compound feed, live weight, liveability, feed conversion, slaughter yield.

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