In this study, some quality characteristics and hatchability characteristics of 1 to 2, 3 to 4, 5 to 6, 7 to 8, 9 to 10, 11 to 12, and 13 to 14 d stored pheasant eggs were investigated. Although it was determined that the effect of storage time on egg weight, shape index, and albumen weight was not significant, the effect of storage time on eggshell weight, shell thickness, yolk weight, albumen index, yolk index, Haugh unit, shell percentage, albumen percentage, and yolk percentage was significant (P<0.05). It was determined that prolonged storage time caused a decrease in the albumen index and Haugh unit value but an increase in the yolk index of pheasant eggs. There was no positive or negative effect of storage time on the fertility rates and hatchability of fertile eggs, but there was a negative effect of storage time on hatchability on d 8 (P<0.05). Pheasant eggs should not be stored more than 8 d.

This study was conducted to determine the effect of egg weight on chick weight, egg weight loss and hatchability in partridges. Eggs (847) obtained from rock partridges (44-46 weeks ages) were classified according to their weights as <18 g, 18. 00-18.99 g, 19.00-19.99 g, 20.00-20.99 g, 21.00-21.99 g, 22.00-22.99 g and ≥23 g and incubated. A positive, powerful and important correlation (0.46 and 0.82 values) between egg weight and egg weight loss and chick weight in different groups was determined (P<0.001) in the study. The differences between hatchability and fertility in the egg groups were significant (P<0.05), but no differences were detected between hatchability of fertile eggs and embryonic mortalities. In conclusion, smaller and bigger eggs of partridges had low fertility while hatchability was disproportionately reduced in eggs that had lost less mass during incubation. g, 18,00-18,99 g, 19,00-19,99 g, 20,00-20,99 g, 21,00-21,99 g, 22,00-22,99

No abstract

A study was conducted to determine the effect of live weight of partridges on egg production and egg quality characteristics. A total of 144 Rock Partridges were divided into control, heavy, middle, and light BW groups at 32 wk of age. Live weights averaged 512.78 g for the control group, 576.18 g for the heavy group, 523.49 g for the middle group, and 473.83 g for the light group. Egg production rates of these groups were 41.44, 45.78, 32.38, and 24.67%, respectively, over an 8-wk period (P < 0.05). Live weight significantly affected egg weight, specific gravity, albumen index, shell weight, shell thickness, Haugh unit, and albumen weight (P < 0.05). Live weight did not affect the shape index, membrane weight, or yolk weight. As a result, the live weights of partridges used for breeding should not be under the average live weights of hens of the stock. On the other hand, other important factors that affect the egg quality of partridges should be investigated.

The effect of 1 to 2-, 3 to 4-, 5 to 6-, 7 to 8-, 9 to 10-, 11 to 12-, and 13 to 14-d storage periods on quality characteristics and hatchability of partridge (Alectoris graeca) eggs was studied. There was no significant effect of storage period on egg weight, shell weight, shell ratio, and shell thickness as external quality characteristics of partridge eggs (P > 0.05). Storage periods affected internal quality characteristics of partridge eggs (P < 0.05). An increase in yolk ratio (P < 0.05) and decrease in albumen ratio, yolk index, albumen index, and Haugh unit (P < 0.001) occurred when storage periods were lengthened. However, storage period had no significant effect on hatchability (P > 0.05). This study shows that long storage periods do not have negative effects on hatchability of partridge eggs to the extent that occurs in other poultry species. Because of a lack of knowledge about this subject, these studies will be useful in terms of successful intensive partridge breeding.