Hierzu wurden Bruteier einer ROSS 308 Elterntierherde verwendet. Therefore, the incubation parameters should be carefully monitored especially at the bottom part of the setting compartment.Įischalentemperatur, Embryonalentwicklung und Brutergebnisse von Broilerelterntieren hängen von der Position der Eier im Brutapparat ab (vertikale Anordnung)ĭas Ziel der Studie war die Bestimmung des Einflusses der vertikalen Anordnung der Eiern von Broiler-Elterntieren (oben, Mitte, unten) im Brutapparat auf die Eischalentemperatur während der Brut, die Embryosterblichkeit und die Schlupffähigkeit. There was particularly evidence at the end of the incubation time. The study clearly shows that in the case of ROSS 308 broiler breeders, lower eggshell temperatures (by about 0.3☌), recorded on the bottom trays of the setter, had a detrimental influence on the course of embryogenesis. Th day of incubation as well as hatchability. In summary, egg location in the setting compartment relative to the vertical orientation (top, middle and bottom) is an important determinant which, in turn, affects several factors, such as embryo temperature and mortality, egg weight loss up to the 18 The highest embryo mortality between days 19 and 20 and during the incubation process overall and the worst hatchability results were found in eggs located on the bottom trays.
For the first two periods, higher embryo mortality was observed for eggs located at the top level of the setting compartment. On analysing various periods of embryogenesis, the only differences between the groups of eggs were shown to exist for day 2, between days 11 and 12 and between days 19 and 20 of incubation. Temperatures below 37.5☌ have also been exhibited by eggs located at the bottom level of the setting compartment, particularly by those in their final period of incubation (day 18). The eggs located on the top and bottom trays were characterised by temperatures ranging between 37.5 and 38.0☌. In these eggs, the largest loss in weight, up to day 18 of incubation, was also recorded. The eggs incubated at the bottom level of the setting compartment had the lowest temperature (i.e.
Th day, the highest shell temperature was found in eggs located on the middle part of the trolley. On day 3 of embryogenesis, eggs located on trays from the bottom and middle parts of the incubator were characterized by a similar and significantly lower temperature as compared to eggs incubated at the highest level of the setter (37.7☌ v.
After the hatching of the chicks, a hatchability analysis and a detailed evaluation of embryo mortality at different periods of the incubation were carried out. Th day and the temperature of eggshells on the 3 One hundred and fifty eggs were placed on each experimental tray. The eggs were located on 3 setting trays at the bottom, middle and top levels of the trolley as well as in 3 different positions in the incubator (front, centre, back).
A total of 74 experimental incubations was carried out in this study. The experimental material comprised eggs from broiler breeders – ROSS 308. The aim of the study was the analysis of the eggshell temperature during incubation, embryo mortality and hatchability of broiler breeders in relation to the vertical egg location in the setting compartment (top, middle and bottom).
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