Comparative characteristics of eggs of chickens of domestic and foreign selection in their diverse age

Abstract

At this juncture, more and more attention is drawn to the preservation of the gene pool of local breeds of poultry, which have a set of valuable features, including high-quality eggs. In this study, the quality parameters of eggs (egg weight, weight, and proportion of yolk, weight, and proportion of albumen, yolk-albumen ratio, energy value, lipid and fatty acid content in the yolk) of chickens of Ukrainian selection(such hybrids as Plymouth white, Poltava Clay, Birkivska Barvysta and their interbreed hybrids) and foreign commercial crosses (Tetra SL, Tetra H, Super Harko, Lohmann Brown, Highsex White and Brown, High Line W36), at different ages (26, 34, 44 weeks of age) were studied in the comparative aspect. The average egg weight of Ukrainian breeds and hybrids was 51.9 g, 56.5 g, and 61.2 g at the age of 26, 34, and 44 weeks, respectively, in foreign crosses it was much higher - 59 g, 61.2 g, and 64.5 g, respectively (p <0.01). At the same time, there was a probable advantage of the Ukrainian selection bird over the foreign selection bird in the proportion of yolk (by 4.3%, 2.9%, and 4.1% at the age of 26.34 and 44 weeks, respectively), the yolk-albumen ratio (by 0.12, 0.07 and 0.08, respectively) and the energy value of the egg (76, 48 and 60 kJ, respectively). Higher lipid content was found in the egg yolks of domestic chickens in comparison with the foreign hybrid Tetra SL. The total content of saturated and unsaturated fatty acids in the egg yolks in hens of local breeds is higher than in foreign cross. High-quality characteristics of eggs of local breeds and populations are evidence of the presence of a valuable set of genes that require comprehensive study, preservation, and use in the creation of new selectively significant forms.

"Hy-Line International" Company Breeding Achievements

“…Є чимало досліджень учених з різних країн, які проведені за використання курей кросів, селекціонованих у компанії "Hy-Line International" Ren et al, 2020;Cabezas-Garcia et al, 2022). Порівняльні дослідження щодо якості яєць курей різних кросів та вітчизняних порід і ліній провели українські вчені (Nalyvayko et al, 2021). При цьому, слід зазначити, що виробництвом власної племінної продукції наразі в Україні займається тільки Державна дослідна станція птахівництва НААН, але вона може забезпечувати потреби лише невеликих фермерських і присадибних господарств (Катеринич, 2020).…”

Influence of high-bromine poultry products on clinical-biochemical blood parameters of white rats

“…At the same time, other studies (Orobchenko et al, 2022) confirmed that while the bromine in chicken eggs does not exceed the WHOapproved dose for people, equaling 0.4 mg/kg of body weight (WHO, 2018), the intake of bromine with chicken eggs in 2020 has increased by 1.6-2.0 times, compared with 2016. Taking into account bromine's ability to accumulate (Du Toit & Casey, 2011, 2012Koreneva, 2020) and the popularity of poultry products (Nimalaratne & Wu, 2015;Nalyvayko et al, 2021), the objective of our study was determining the influence of high-bromine poultry products the level of thyroid hormones and clinicalbiochemical blood parameters of white rats.…”

Bromine in chicken eggs, feed, and water from different regions of Ukraine

“…Chicken eggs are one of the most useful products in the daily diet of a person, especially children. They contain all the necessary nutrients and biologically active substances easily absorbed by the human body [19], [20], [28]. In addition to protein, fats (fatty acids), enzymes, and vitamins, egg white and yolk also contain minerals (macroand micronutrients).…”