Zakaria A H, Miyaki T, Imai K
Poult Sci. 1984 Jun;63(6):1250-4. doi: 10.3382/ps.0631250.
To analyze characteristics of follicular rapid growth patterns in relation to clutch length and egg position in various clutch lengths, Sudan black and red were alternately injected intravenously into laying hens. The average growth period tended to decrease as clutch size increased, and this was accompanied by an increase in growth rate. The number of growing follicles and the total amount of daily yolk deposition in layers with short clutches were less than in layers exhibiting long clutches. The growth period tended to decrease as egg position advanced in clutches of 2 to 6 eggs. Follicular volume at ovulation also tended to be less in terminal (Ct) follicles in clutches of 2 to 5 eggs. Follicular growth rate was generaly reduced in the first egg of a clutch (Cl) and increased in the Ct follicles. Comparison of growth patterns between Ct and Cl follicles led to the detection of two growth patterns. In the first pattern, the growth period of the Ct follicle was equal to that of the Cl follicle and a one day skip was found between the transformation days of the two follicles; in the second pattern, Ct and Cl follicles entered into the rapid growth phase on consecutive days, but the Cl follicle took one day longer than the Ct follicle to reach ovulation.
为分析不同窝卵数情况下卵泡快速生长模式与窝卵长度及卵位置的关系，将苏丹黑和苏丹红交替静脉注射到产蛋母鸡体内。随着窝卵数增加，平均生长周期趋于缩短，同时生长速率增加。短窝产蛋鸡的生长卵泡数量和每日卵黄沉积总量少于长窝产蛋鸡。在2至6枚卵的窝中，随着卵位置的推进，生长周期趋于缩短。在2至5枚卵的窝中，排卵时终末（Ct）卵泡的卵泡体积也往往较小。窝中第一枚卵（Cl）的卵泡生长速率通常降低，而Ct卵泡的生长速率增加。比较Ct和Cl卵泡的生长模式，发现了两种生长模式。在第一种模式中，Ct卵泡的生长周期与Cl卵泡相等，且两个卵泡的转化日之间间隔一天；在第二种模式中，Ct和Cl卵泡连续进入快速生长阶段，但Cl卵泡达到排卵的时间比Ct卵泡长一天。
