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首页> 外文期刊>Preventive Veterinary Medicine >Effects of surgical and chemical sterilization on the behavior of free-roaming male dogs in Puerto Natales, Chile
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Effects of surgical and chemical sterilization on the behavior of free-roaming male dogs in Puerto Natales, Chile

机译:外科手术和化学消毒对智利纳塔莱斯港自由漫游的雄狗行为的影响

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Population management of free-roaming domestic dogs (Canis lupus familiaris) is of interest due to the threat these animals pose to people, other animals and the environment. Current sterilization procedures for male dogs include surgical and chemical methods. However, little is known about how these procedures affect their behavior. The primary objective of this study was to investigate changes in selected behaviors following chemical and surgical sterilization in a male free-roaming dog (FRD) population in southern Chile. We also examined the association between serum testosterone levels and behaviors thought to be influenced by circulating androgens. A total of 174 dogs were randomly assigned to either a surgical or chemical sterilization group, or a control group. At the onset of the intervention period, 119 dogs remained and 102 dogs successfully completed the study. Each dog was monitored pre- and post-intervention using video recordings, GPS collars, and blood samples for the measurement of testosterone. Analysis of behavior revealed that surgically castrated dogs showed no reduction of sexual activity or aggression when compared to their pre-intervention behavior. Chemically sterilized dogs showed a statistically significant increase in dog-directed aggression, but no change in sexual activity, There was no change in home range size in any groups between the pre- and post-intervention measurement. We found no consistent association between levels of serum testosterone concentration and behavioral changes in any of the groups. This study presents the first detailed behavioral observations following surgical and chemical sterilization in male FRDs. The information generated is highly relevant to communities struggling with the control of FRDs. Complementary studies to further our understanding of the effects of male sterilization on the behavioral and reproductive dynamics of FRD populations are needed. (C) 2015 Elsevier B.V. All rights reserved.
机译:由于这些动物对人,其他动物和环境构成威胁,因此对自由漫游的家犬(犬天狼犬)的种群管理很感兴趣。当前用于雄狗的绝育程序包括外科和化学方法。但是,对于这些过程如何影响其行为知之甚少。这项研究的主要目的是调查智利南部的一只雄性自由漫游犬(FRD)种群在化学和手术灭菌后某些行为的变化。我们还检查了血清睾丸激素水平和被认为受循环雄激素影响的行为之间的关联。总共174只狗被随机分配到手术或化学消毒组或对照组。在干预期开始时,仍有119只狗和102只狗成功完成了研究。在干预前后,使用视频记录,GPS项圈和血液样本监测每只狗的睾丸激素水平。行为分析显示,与干预前的行为相比,手术去势的狗没有表现出性活动或攻击性下降。经过化学消毒的狗在定向攻击方面显示出统计学上的显着增加,但是性活动没有变化。干预前后的测量之间,任何组的家庭范围大小都没有变化。我们发现在任何一组中血清睾丸激素浓度水平与行为变化之间均无一致关联。这项研究提出了对男性FRD进行手术和化学绝育后的首次详细行为观察。所产生的信息与在FRD控制方面苦苦挣扎的社区高度相关。需要补充研究以进一步了解男性绝育对FRD种群行为和生殖动力学的影响。 (C)2015 Elsevier B.V.保留所有权利。

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