Effects of ventilation programme and eggshell thickness on hatchability rate and hatching time of broiler eggs
Yükleniyor...
Dosyalar
Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
South African Journal of Animal Sciences
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The aim of the research was to determine whether enrichment of the atmosphere in an incubator with carbon dioxide (CO2) and oxygen (O-2) and eggshell thickness ( EST) affected embryonic death (ED), hatchability of fertile eggs (HFE) and hatching time (HT). A total of 320 Ross 308 eggs were used and the experiment was repeated twice. Eggshell thickness was classified as thin (<31 mu m), medium (31 - 32 mu m) and thick (>32 mu m). The incubators were operated with their internal atmosphere enriched with CO2 (1.57% CO2; 20.23% O-2) or O-2 (0.50% CO2; 22.44% O-2). Embryonic death, HFE and HT data were monitored at three periods, namely early (<486 hours), middle (486 - 492 hours), and late (492 - 510 hours). Early ED, late ED and hatchability of fertile eggs were not affected by EST or by the incubator's internal atmosphere (P >0.05). Thus, O-2 supplementation to the incubator was deemed unnecessary at 822 m altitude. There was a highly significant interaction between EST and HT. Eggs with shells 31 to 32 mu m thick hatched at an appreciably greater rate between 486 and 492 hours of incubation (17%) than eggs with thicker (0.6%) or thinner (0.4%) shells in both the CO2 and O-2 enriched atmospheres. The hatching rate was significantly higher in the eggs with an intermediate EST than in thick-shelled eggs. A greater proportion of eggs hatched at the late HT as opposed to earlier, regardless of EST.
Açıklama
This research was supported by BAP Project No. 2016.10.03.990 awarded to Bolu Abant Izzet Baysal University (BAIBU) and the equipment was provided by this project and additional funding (BAP project numbers 2015.10.03.881, 2015.103.88 and 2016.10.03.1029). The BAIBU and Beypi Inc. (beypilic (R)) for their support which allowed the first author to realize the research.
Anahtar Kelimeler
Oxygen Concentration, Embryo Growth, Co2 Levels, Incubation, Quality, Temperature, Traits
Kaynak
South African Journal of Animal Sciences
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
51
Sayı
2
Künye
Okur, N., & Eratalar, S. A. (2021). Effects of ventilation programme and eggshell thickness on hatchability rate and hatching time of broiler eggs. South African Journal of Animal Science, 51(2), 205-211.
