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Öğe Effect of different egg storage times on some egg quality characteristics and hatchability of pheasants (Phasianus colchicus)(OXFORD UNIV PRESS, 2009) Demirel, S.; Kirikci, K.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.Öğe Effect of hen weight on egg production and some egg quality characteristics in the partridge (Alectoris graeca)(POULTRY SCIENCE ASSOC INC, 2007) Kirikci, K.; Gunlu, A.; Cetin, O.; Garip, M.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.Öğe The effect of stocking density on growth performance and average cost in partridge rearing (Alectoris graeca)(POULTRY SCIENCE ASSOC INC, 2007) Gunlu, A.; Kirikci, K.; Cetin, O.; Garip, M.In this study, stocking density and economic evaluation of partridge rearing was investigated. Experimental design was constructed as 576.9 cm(2)/chick (group I), 384.6 cm(2)/chick (group II), 288.5 cm(2)/chick (group III), and 230.8 cm(2)/chick (group IV). Live weights of the first, second, third, and fourth groups at 12 wk of age were determined as 376.46, 367.95, 371.07, and 358.80 g, respectively. Additive feed consumption and feed conversion ratio of the groups were determined as 1,781.74 g and 4.93, 1,805.13 g and 5.13, 1,830.51 g and 5.15, and 1,720.09 g and 5.02, respectively. Total mortality rates of the groups at the end of the feeding time were determined as 3.5, 3.75, 6.75, and 13.00%, respectively (P < 0.05). As a result, it was concluded that rearing in 288.5 cm(2)/chick was suitable according to live weights of partridges, feed conversion ratio, and mortality rates. Also, it was concluded that decreasing costs and increasing profitability in partridge rearing could be achieved.Öğe Effects of different storage time on hatching results and some egg quality characteristics of rock partridge (A. graeca) (management and production)(OXFORD UNIV PRESS, 2017) Gunhan, S.; Kirikci, K.In this research, partridge eggs were stored during zero to 7, 8 to 14, 15 to 21, 22 to 28, 29 to 35 and 36 to 42 d, respectively. The effect of different egg storage periods on egg protein and moisture rates, mineral contents, and some egg quality and hatching characteristics were investigated. The extension of egg storage times didn't affect the external quality features like shell weight, shell thickness, and albumen rate, but it affected the yolk weight, yolk index, albumen index, and Haugh unit (P < 0.05). Yolk weight was increased and yolk index, albumen index, and Haugh unit values were decreased with the extension of storage time. Different storage times of partridge eggs did not have important effects on the protein rates. Protein and humidity rate of the eggs were 14.21 and 67.64%, respec-tively. There were some elements such as S, P, Na, K, and Ca, but Al, Cd, Co, Mo, and Pb could not be found in the partridge eggs. There is no effect of the storage time on the mineral content of the egg. Storage time had negative effect on fertility and hatchability after 21 d of storage d, but no effect on hatchability of fertile eggs. As this study showed, partridge eggs are resistant to long storage times, as partridge egg proteins can resist degradation in the optimum storage times. To determine egg degradation, the study should be focused on partridge eggshell features, which are responsible for degradation. As a result of this research, partridge eggs can be stored for 21 d under optimum storage conditions without any negative hatchability results.
