The use of a polyphenol-carbon complex from the Antarctic black yeast Nadsoniella nigra in the diet of poultry and their effect on the hatching quality of quail eggs of laying hens
Abstract
The results of research on the influence of the polyphenol carbon complex from the Antarctic black yeast Nadsoniella nigra, which is additionally introduced into compound feed, are presented on the hatching qualities of quail eggs. Experimental studies were conducted in the conditions of the problematic research laboratory of feed additives of the National University of Bioresources and Nature Management of Ukraine. The material for the scientific and economic experiment was adult quail of the Pharaoh breed. Experiments were conducted using the group method. Accordingly, 192 heads of quails were selected for the experiment at 42 days, from which four groups were formed according to the principle of analogs - a control group and three experimental ones, 48 heads in each with four replications). When selecting analogs, the sex, age, and body weight of the bird were taken into account. The main period lasting 210 days, was divided into seven sub-periods, each of which lasted 30 days. The composition of the compound feed for the quails of the control and experimental groups and the set and number of ingredients in it were identical. The chemical composition of the combined feed used for feeding quails was the same and differed only in the content of PFC. During the experiment, the preservation of livestock and productivity were recorded, and feed conversion was also calculated. It was experimentally established that adding 0.1, 0.5, and 1.0 mg/kg polyphenol-carbon complex from the Antarctic black yeast Nadsoniella nigra to compound feed positively affects the hatching properties of eggs and, at the same time, reduces the percentage of hatching waste. At the same time, in the birds of the 3rd experimental group, which were fed 0.5 mg/kg of PFC as part of the compound feed, respectively, the percentage of fertilization was 2.2%; hatchability of eggs by 3.8%; and the yield of young by 5%, compared to birds that were not given PFC compound feed.
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