Abdou F H, Katule A M, Sukuzi O S
Monoufia University, Faculty of Agriculture, Shebin El-kom, Egypt.
Beitr Trop Landwirtsch Veterinarmed. 1990;28(3):337-43.
In order to study the effect of the storage period, 2400 hatching eggs from hens in the Tanzanian coastal region were stored for 0 to 15 days under room conditions of temperature and humidity. On the 16th day of a collection period with daily additions, the incubation of 50 eggs each was started. At hatching time, the number of healthy chicks hatched from each storage period treatment was counted. Also studied was the growth of the hatched chicks for the first three weeks of their life. A highly significant negative correlation (-0.98) was observed between the pre-incubation storage period and the hatchability of eggs. The regression coefficient was found to be -5.3. This means that hatchability declined by an average of 5.3% for each day the eggs had been stored. Prolonged storage of hatching eggs also affected the post-hatching growth performance of these chicks. The adverse effect disappeared, however, with increasing age of the chicks. It is recommended that hatching eggs should not be stored under ordinary room conditions in the tropics for more than 7 days prior to hatching.
为了研究储存期的影响，从坦桑尼亚沿海地区的母鸡中选取2400枚种蛋，在室温和湿度条件下储存0至15天。在每天增加种蛋的收集期的第16天，开始对每组50枚种蛋进行孵化。在孵化时，统计每个储存期处理孵出的健康雏鸡数量。还研究了孵出雏鸡出生后头三周的生长情况。观察到孵化前储存期与种蛋孵化率之间存在高度显著的负相关（-0.98）。回归系数为-5.3。这意味着种蛋每储存一天，孵化率平均下降5.3%。种蛋的长时间储存也影响了这些雏鸡孵化后的生长性能。然而，随着雏鸡年龄的增长，这种不利影响消失了。建议在热带地区，种蛋在孵化前在普通室温条件下储存时间不应超过7天。
