Bulletin "Veterinary biotechnology"

Veterynarna biotehnologija – Veterinary biotechnology, 2019, 34, 154-160 [in Ukrainian]. https://doi.org/10.31073/vet_biotech34-19

TIMOSHENKO R.Yu., e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it., FOTINA T.I., e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it., NAZARENKO S.M., e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Sumy National Agrarian University

VETERINARY-SANITARY EVALUATION OF BROILER CHICKENS’ MEAT AFTER ADDING CHELATED TRACE ELEMENTS TO THEIR DIET

Introduction. At present, deficiencies of many mineral and biologically active substances are registering in poultry diet. The use of inorganic trace elements to enrich the diets is not efficient enough that leads to over-consumption of fodder. To enrich the chicken’s diet with trace elements, their inorganic derivatives are traditionally used, but their bioavailability is low in many cases. To date, mineral premixes containing chelate compounds of trace elements have not been created in Ukraine, recipes of mixed fodders containing such elements have not developed yet as well. Therefore, correct and rational feeding of animals with high quality mixed fodders balanced by nutritional and energy value, containing a sufficient amount of biologically active substances is a necessary condition for achieving high productivity, quality and safety of livestock products.

The goal of the work. To conduct a veterinary-sanitary assessment of broiler chickens’ meat after use of chelating trace elements in the diet.

Materials and methods. Researches were carried out on cross Cobb-500 broiler chickens in conditions of vivarium of the veterinary faculty of Sumy National Agrarian University, divided into two groups (experimental and control), by 10 birds in each according to the principle of analogues. For the control group chickens the sulfates of Zinc, Kuprum and Mangan were used. For broiler chickens of the experimental group, chelate trace elements of Zinc, Kuprum and Mangan were used. These compounds were administered to the broiler chickens of all groups with a feed in a dose that corresponded to the daily need of poultry in this microelement. The duration of study was 42 days. Results of research and discussion. The tests for detection of primary proteins decomposition products were negative. The amount of volatile fatty acids in chickens meat of control group was 2.6 mg KOH per 1 g, in chickens of experimental group – 2.9 mg KOH/g. The acid and peroxide number of fat in the control and experimental samples were respectively 0.51 mg KOH and 0.47 mg KOH; iodine – 0.00902 g and 0.00904 g respectively. The concentration of hydrogen ions varied within the permissible range: in control samples of white meat it was 5.6, in experimental samples – 5.3 and in red ones – 5.9 and 6.0, respectively. Bacterioscopy of impression smears of the surface layer of broiler chickens’ meat showed single cocci. In the control and experimental group of birds, signs of muscle decomposition were not detected. The indicator of MAFAM in the experimental group of in white meat was (1.3 ± 0.5)×103 CFU/g (p≤0.05), in red ones – (6.8 ± 1.0) × 103 CFU/g (p≤0.05). The maximum permissible level (MPL) of MAFAM should not be higher than 1.0 × 103 CFU/g. Obtained data indicated that the MAFAM parameter was within permissible level.

Conclusions and prospects for further research: 1. Organoleptic evaluation of the broilers’ meat of the experimental group were within the MPL. 2. Biochemical microscopic and microbiological indices of poultry meat, after feeding diets containing chelate trace elements confirmed to be fresh and suitable for consumption. The future research will be focused of the effect of the chelate trace elements on the quality of chicken broilers meat under production conditions.

Keywords: chicken-broilers, chelate compounds, organoleptic evaluation, bacteriological indices.

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