Malmsten Anna, Jansson Gunnar, Dalin Anne-Marie
Division of Reproduction, Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Grimsö Wildlife Research Station, Department of Ecology, Swedish University of Agricultural Sciences, Riddarhyttan, Sweden.
Reprod Domest Anim. 2017 Aug;52(4):570-578. doi: 10.1111/rda.12947. Epub 2017 Mar 13.
In recent decades, wild boars (Sus scrofa) have increased in numbers and distribution in Europe. Compared to other wild ungulates of similar body size, wild boars have a high reproductive capacity. To increase the knowledge of wild boar reproduction, the objective of this study was to investigate characteristics of reproductive organs, and to provide information on the occurrence of abnormalities in reproductive organs from free-ranging female wild boars. Between December 2011 and December 2015, reproductive organs from female wild boars (>30 kg body weight), were collected during hunting in four Swedish counties at estates where supplementary feeding was applied. The organs were macroscopically examined and measured. The stage of the reproductive cycle was defined according to the ovarian structures and in relation to uterus characteristics. Observed abnormalities were noted. The results from 569 animals that met the requirements to be included in this study showed significant differences in weight and length of the uterus between the various reproductive stages. Sampling region had significant effect on these differences. Abnormalities in the reproductive organs were present in approximately 10% of the examined animals. The prevalence of abnormalities increased significantly with age and was significantly affected by sampling region.
近几十年来，野猪（Sus scrofa）在欧洲的数量和分布范围都有所增加。与其他体型相近的野生有蹄类动物相比，野猪具有较高的繁殖能力。为了增加对野猪繁殖的了解，本研究的目的是调查生殖器官的特征，并提供有关自由放养雌性野猪生殖器官异常情况的信息。在2011年12月至2015年12月期间，在瑞典四个县的庄园中，对体重超过30千克的雌性野猪进行狩猎时收集其生殖器官，这些庄园都提供了补充饲料。对这些器官进行了宏观检查和测量。根据卵巢结构并结合子宫特征确定生殖周期阶段。记录观察到的异常情况。569只符合纳入本研究要求的动物的结果显示，不同生殖阶段子宫的重量和长度存在显著差异。采样区域对这些差异有显著影响。约10%的受检动物存在生殖器官异常。异常发生率随年龄显著增加，且受采样区域的显著影响。
