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Badania prowadzono w stadzie reprodukcyjnym 5-letnich nandu (Rhea americana). Inkubacji poddano 62 jaja pochodzące z około szczytowego okresu nieśności ptaków. W czasie klucia odnotowywano przypadki udzielania pisklętom pomocy. Na podstawie przeprowadzonej analizy odpadu powylęgowego wyodrębniono trzy grupy: I skorupy jaj, z których pisklęta wykluły się samodzielnie, II – skorupy, z których pisklęta...
The aim of this experiment was to study how reduced content of protein in each feeding stage during raising influences carcass fattiness and, in consequence, the chemical composition, and meat physicochemical and sensory properties in 6-week-old quail. The material comprised 150 one-day-old Pharaoh quail divided into three experimental groups. The birds of the group I received feeds with nutritional...
The study was aimed at determining the effect of quail origin on their utility and egg quality traits. Young quails were reared at own farm under most favorable microclimate conditions using the standard feeding adapted to particular rearing stages. In the fifth week of life, the quails were weighted and three groups were formed for Pharaoh breed and White and Golden varieties, 24 birds each. Adult...
Little information on emu incubation techniques has been published so far both in the Polish and foreign literature; hence this study, which is aimed to investigate effects of various levels of incubation relative humidity on the hatchability of emu eggs. Three levels of relative humidity (RH), 20, 25, and 30%, were applied to groups I, II, and III, respectively. The temperature 36.4°C was maintained...
The studies were carried out on 40 female Pharaoh quails. In the fifth week of age, the quails were weighed and randomly assigned to 5 feeding groups. In the group I, control, the females were fed on standard feed formed for adult quail feeding. The experimental groups II and III received the standard mixture with oligosaccharides added, which had been extracted from pea seed, in the quantities and...
The aim of the study was to assess an effect of incubation temperature (36.4, 36.7, and 37.1°C) on hatching performance of emu. The fewest dead embryos (13.7%) were found in group I with the lowest incubation temperature. Raising the temperature by 0.3°C and 0.7°C in, respectively, group II and III reduced the hatchability indices, primarily due to an increased rate (by approx. 12%) of dead embryos...
Chitosan is the simplest form of chitin, found in carapaces of crabs, prawns, and krill. Due to its chemical and physical properties and biological activity, chitosan is widely applied in, i.a., medicine, animal care, and agriculture. Chitosan effects on poultry health and production have been studied to a limited degree only. The present study was thus aimed at elucidating chitosan effects on the...
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