Akademik Veri Yönetim Sistemi
International Conference on Veterinary, Agriculture and Life Sciences (ICVALS), Antalya, Türkiye, 5 - 08 Kasım 2021, ss.8, (Özet Bildiri)
STORAGE LENGTH, TURNING FREQUENCY AND EGG POSITION EFFECTS ON HATCHING RESULTS AND EMBRYONIC MORTALITY RATES IN CHUKAR PARTRIDGES (ALECTORIS CHUKAR)
The aim of this study was to investigate the effect of storage length, turning frequency and storage position of 56-week-old Chukar partridge (Alectoris chukar) eggs reared in semi-open cages on hatching results and embryonic mortality rates. Total of 1780 Chukar partridge eggs divided into 36 subgroups including storage length (7, 14, 21 and 28 d), turning frequency (0, 1 and 24 times a day) and egg position (blunt-end up, pointed-end up and horizontal). Hatchability of eggs with stored 21 d and pointed-end up was positively affected by increasing turning frequency. Egg fertility rate was found to be the lowest in eggs stored 21 d and unturned group. Hatchability rate was observed the lowest in eggs stored blunt-end up while the highest values was observed in those stored pointed-end up. Early embryonic mortality rate was found to be quite high in eggs unturned with the position of blunt-end up during 21 d of storage period. Total embryonic mortality was observed quite higher in eggs turned hourly during storage with the position of blunt-end up during 28 d of storage group. In conclusion, to obtain the best hatching results for more than 21 d storage length, the Chukar partridge eggs should be turned 24 times a day with the position of pointed-end up.
Keywords: chukar partridge, egg position, embryonic mortality, hatchability, storage period, turning frequency