Effects of Daily Egg Collection Number on Grade Percentage, Hatching percentage, Egg Infertility, and Contamination Percentage in the Broiler Parent Stock Farm

Egg collection for hatching in poultry farms is done in different numbers based on the experience of the farms. Daily egg collection times recommended for hatching are at least 4 and 6 times daily in heat conditions. Regarding that the daily egg collection-number affects the quality index of the eggs, this study aimed to investigate the effects of daily egg collection on Grade Percentage, hatching percentage, hatching percentage, infertility rate, and egg contamination rate.

This study was carried out in a completely randomized design with 4 treatments and 6 replications over 24 days on an Arbreakers strain flock aged 46 weeks. Due to the high number of experiments and costs, a salon was randomly selected for the experiments. One day was assigned for each replication. Eggs were collected twice on the first day, 4 times on the second day, 6 times on the third day, and 8 times on the fourth day. These four treatments of 2, 4, 6, and 8 times egg collection were performed in six replicates.

The results showed that the number of collected eggs was effective on the grade percentage of eggs in incubation, hatching percentage, the percentage of first and second-grade chicks, and also, the production and quality of the chickens. As the number of daily collections increased, the grade percentage in incubation and the percentage of hatching increased and the percentage of second-grade chicks decreased.