The Effect of Heating and Wetting Applications During Storage on Weight Loss, Hatchability and Gosling Quality Traits in Goose Eggs

Abstract

In the study, 4 different groups covering the applications in the storage process; Heating (A), Wetting (B), Wetting+Heating (C) and Control (D) were created. After the goose eggs were collected every day, they were divided into 4 groups in equal numbers and the applications were made to all eggs, including the eggs of the previous day, during the storage period (9 days). The storage temperature was adjusted to be 16 ºC and 75% humidity and the D group was kept under these conditions. Group A eggs were taken back to the warehouse by keeping them at 35 ºC for half an hour every day, group B eggs were taken back to the warehouse by spraying with 25 ºC water once a day, and the storage process was continued by applying these two applications one after the other to group C eggs. A total of 1080 eggs were used, 270 goose eggs in each group. According to the study results, there was a difference between the groups in terms of storage weight loss (p<0.05), while there was no difference in weight loss during incubation (0-18 and 0-27 days) (p>0.05). While the highest weight loss throughout the storage was in group A, the lowest weight loss was calculated in group B. In terms of pip time averages, group A was the earliest with 695th hour of incubation, while group C was the latest with 699th hour. There was no difference between the groups in terms of hatch time. While there was no difference between the experimental groups in the mean quality of the gosling quality score, gosling weight, gosling length and shank length, the mean shank diameter was calculated in the lowest C group. In the study, the general average of fertility rate was 86.28%, while the highest average in terms of hatchability was calculated in group A with 86.80%, groups B, C and D had similar averages as 80.88, 79.41 and 79.01%, respectively. Early embryo death rate was highest in groups C and D, mid-term group A, late death rate was highest in group B. While the contamination was not high in the wetting only (B) group, it was highest in the wetting+heating (C) group. As a result, while group A was the best group in terms of hatchability, group B was the group with the least loss in terms of storage weight loss.