- Selcuk Journal of Agriculture and Food Sciences
- Vol: 18 Issue: 33
- The Effects of Different Cabinet Temperatures During Last Stage of Incubation on Hatching Traits of ...
The Effects of Different Cabinet Temperatures During Last Stage of Incubation on Hatching Traits of Different Egg Weight Groups in Broiler Hatching Eggs
Authors : Iskender Yildirim, Ali Aygün
Pages : 28-32
View : 8 | Download : 7
Publication Date : 2004-06-25
Article Type : Research Article
Abstract :This study was conducted to investigate the effects of different cabinet temperatures during plateau and pip stages of embryo development and different egg weights produced by same flock (49 wks old age-Ross-308) on hatching traits in broiler. The eggs divided into three egg weight groups (55.01-60.00 g, 1st group, 60.01-65.00 g, 2nd. group and 65.01-70.00 g, 3rd group) and exposed to three different hatching cabinet temperatures during plateau and pip stages of incuba-tion. The temperatures were adjusted as 37.2 (KON), 38.3 (Y) and 39. 4 0C (ÇY) for cabinets during the study. The statisti-cal evaluation for egg components was carried on six eggs for each treatment group (totally 18 eggs) . The differences among groups for egg and albumen weights were found significant (P<0.01). The differences for yolk weights were found significant between first and other two groups and the yolk weight in group 1 decreased compared with other groups. No difference were found for albumen and yolk rates between 1 and 2 but for 3 treatment groups. In spite of incerasing albu-men rates in the eggs over 65 g , by contrast, the yolk rate decreased compared with other treatment groups. Prenatal and total late deaths increased and dependingly hatchability of over 65 g of eggs depressed when exposed to 37.2 0C cabinet temperature. Perinatal deaths at 39.4 0C were found significantly higher in group three than that of group 2. The results imply that the eggs over 65 g should be incubated at temperatures higher than 37.2 0C cabinet temperatures during plateau and pip stages of incubation. The temperature of Y group seems to be optimal for all egg weight groups.Keywords : plato-pip, kuluçka, sıcaklık, yumurta ağırlığı, broiler