Erices J, Schnurrbusch U
Arch Exp Veterinarmed. 1979;33(3):457-73.
Macroscopic examination was applied to the ovaries and histological tests to the uterus of 108 pigs aged between one and 240 days. The results have shown that the growth of the uterus in swine had not taken place with continuity. Extraordinarily strong thickness growth of the endometrium and myometrium was observed over the first three months of age. Thickness growth of both layers then continued at reduced rate. The uterine glands began to develop from superficial epithelium in the second week of age and reached the basal part of the endometrium in the fourth week. Both the number of uteroglandular sections per visual field and the glandular surface over the whole area of the endometrium, as recorded from cross-section specimens, increased strongly over the first three months of age, followed by less marked change. Continued development and maturation of the elements involved took place between the twelfth and 24th weeks of age, with the uterine glands acquiring capacity of secretion. Stagnation is uterus development and growth was observed at the age of over 180 days. The most favourable date for zootechnical stimulation of puberty was considered to lie in the period between 170 and 200 days of age, whereas biotechnical induction of puberty might give best results when applied at an age between 180 and 200 days.
对108头年龄在1至240天之间的猪的卵巢进行了宏观检查，并对其子宫进行了组织学检测。结果表明，猪子宫的生长并非持续发生。在出生后的前三个月，观察到子宫内膜和肌层的厚度增长异常强劲。此后，两层的厚度增长速度减缓。子宫腺在出生后第二周开始从表层上皮发育，并在第四周到达子宫内膜基部。从横断面标本记录的数据来看，在出生后的前三个月，每个视野中的子宫腺切片数量以及子宫内膜整个区域的腺表面积均显著增加，随后变化不太明显。在出生后的第12至24周，相关组织持续发育并成熟，子宫腺获得了分泌能力。在超过180日龄时，观察到子宫发育和生长停滞。动物技术上刺激青春期的最适宜时间被认为是在170至200日龄之间，而生物技术诱导青春期在180至200日龄时应用可能会取得最佳效果。
